Do-it-yourself roofing with ondulin. How to cover a roof with ondulin

In Russia one of common materials for roofing is ondulin. It was first released by the French company ONDULINE almost 50 years ago.

Today, ondulin is produced in sheets measuring 2 m in length and 95 cm in width. Sheet thickness does not exceed 3 mm, and weight – no more than 6 kg.

Material ondulin has a number of positive qualities , which include:

Life time ondulin is about 50 years old;
The manufacturer provides a guarantee waterproof for at least 15 years;
Operating temperature is from -40 to 80 degrees Celsius;
1 sq.m of material can withstand the load 300 kg;
The material can withstand the wind up to 200 km/h;
Possesses high level soundproofing, and is also not susceptible to fungi and other chemicals.

In front of the roof roof ondulin should be produced preparatory work . At the initial stage, the roof is insulated. To do this, the insulation material is laid in even sections, leaving the sheathing overlap visible through the light.

After laying out the insulation, they begin to fasten the ondulin. His begin to fasten from the bottom of the roof. In this case, you should leave a cornice overhang of at least half a meter. When laying, overlaps are also taken into account; they should be in one wave.

Attach ondulin with special nails. According to the instructions for fastening the material to the roof, there are 20 nails per sheet of ondulin. Failure to comply with this rule may result in the sheet tearing off during bad weather conditions.

It is not recommended to use force when driving a nail, the nail must be driven in calmly so that the sheet does not sag, otherwise water will accumulate in it. For convenience, you can use special caps that fit directly into the holes.

The second layer is laid from half the sheet, which was previously cut lengthwise. The overlap can be up to 30 cm.

Then start attaching the gable material. It gives the roof a finished and aesthetic appearance, and also serves as a boundary for the edges. When fastening, special nails are also used; they are driven in at a distance of 20 cm from each other.

Calculation of ondulin on the roof

Before starting roofing work all calculations must be made accurately. All gaps and overlaps must be taken into account.

The useful area of the sheet is 1.9 sq.m (2*0.95). Taking into account gaps and overlaps, the useful area is reduced to 1.6 sq.m. It turns out that for a simple gable roof with a total area of 100 sq.m, 63 sheets (100/1.6) will be required.

If the roof has an uneven surface, it is necessary to make calculations using a drawing. To do this, draw the roof according to the projection, and then divide it into geometric shapes.

Depending on the level of tilt, we reduce the height of the figure (from 10 to 30 cm for a tilt level of 15 to 30 degrees, respectively). Calculate the area of each figure. Then add up all the resulting values.

How to cover a sloping roof with ondulin?

It is often possible meet houses with figured roofs, their correct name is broken. Such roofs usually have an attic underneath. Cover broken roof Ondulin is necessary using the same technology as a simple gable.

Material calculations are also carried out according to the general principle. But there is a small peculiarity during fastening, in fact, this is the only difference.

The broken roof is being covered, starting from the top. This is necessary for convenience. A galvanized iron ridge is immediately installed. Having covered the top part of the roof, move on to the bottom.

See also:

Useful information on how to cover a roof with ondulin - installation details

For information about what ondulin is, see here

They begin to cover it from the bottom row. It must be covered from below with a special cornice filler. The top row is cut with a hacksaw.

And also watch a video on how to install ondulin on a new roof:

Today, roofing material such as ondulin is very popular. The production of such material is carried out in various countries. The quality of ondulin largely depends on the country of origin. Ondulin is often also called Euroslate. Roofing work using ondulin is quite simple. But, in order to carry out the work efficiently, you need to know how to lay ondulin on a sloping roof - step-by-step instructions.

Materials and tools

In order to cover the roof with ondulin, you need to have some tools and materials on hand. These include:

roofing material;
special fastening nails.

Before purchasing material, you must carefully calculate its quantity. To do this, a roof project is drawn up, which allows you to calculate the roof area. The resulting area is divided by the size of the roofing material. The length of the sheet is 2 m and the width is 0.95 m. When calculating, it is worth taking into account the features of the roof, especially if we are talking about broken structures. In such cases, experts recommend dividing the roof into separate sections. This will allow you to calculate the exact amount of roofing material.

As for the fastening elements, they are often included with the roofing material. They have a color identical to the shade of the roofing material. This will create an aesthetic appearance of the roof and hide the attachment points.

Installation of ondulin

A sheet of ondulin weighs only 5.5 kg. This greatly simplifies the installation of the roof. Ondulin is installed using a technology similar to slate roofing. The sheets are bendable, which allows them to be used on uneven surfaces. To prevent the roof from sagging under heavy loads, experts recommend installing sheathing.

Sheets of roofing material are laid overlapping. Fastening elements are installed at the joints of the sheets. This allows the connection to be sealed. In order for the roof to have an aesthetic appearance, all fasteners must be located in one row. To achieve this result, markings are first applied to the sheets at the locations of the nails.

At the final stage, the ridge elements are installed. If there is a chimney pipe or windows on the roof, then waterproofing tape is used at the junctions of the structures with the roofing material. This allows you to make the joining airtight.

The construction of the roof is the last stage construction own home before the beginning interior decoration and connecting communications. To reduce the time required for roofing work, you can install ondulin yourself. Ondulin – modern covering based on bitumen, the laying technology of which allows the material to be installed both on a new roof and on an old one without dismantling the structure. It is suitable for roofs of any complexity, area and slope, therefore it is considered universal option, used in private and industrial low-rise construction. In this article we will tell you how to properly cover a roof with ondulin in order to obtain a durable, airtight coating that can withstand winter frosts and summer rains.

Material characteristics

Ondulin is an inexpensive, technologically advanced roofing material that was invented in the post-war period in France for quick repair or reconstruction of shell-damaged, dilapidated roofs from traditional ceramic tiles, slate, metal. The production technology of this coating consists of obtaining purified cellulose fibers, making sheets with a wavy surface from them, dyeing and impregnating them with petroleum bitumen. Coating the roof with ondulin makes the structure waterproof, resistant to temperature changes, impact-resistant, but at the same time lightweight. Due to the low weight of each sheet, installation of ondulin can be carried out on old roofing material without dismantling the structure. This material has the following advantages:

A light weight. Each sheet of standard size ondulin weighs only 6 kg, so making blood from this material does not require the establishment of a massive frame or strengthening of the foundation.
Easy to install. Do-it-yourself ondulin roofing can be done in 1-2 days without the involvement of hired workers, since such a covering can be installed without special tool and experience.
Flexibility. Sheets of this bitumen-based material have a certain flexibility, which simplifies the installation of ondulin on roofs of complex shapes, such as valleys, multi-slope slopes, ribs and dormer windows.
Affordable price. Installing a roof made of ondulin does not require large expenses from the homeowner due to the saving of lumber used to construct the frame and performing the installation on their own.

Important! Since ondulin was still conceived as repair material, it has a service life of 15-20 years and is relatively small color scheme. It comes in only 4 colors: red, black, brown and green. Before covering the roof with ondulin, it is necessary to take into account that this material fades in the sun due to the destruction of the pigment by ultraviolet rays.

Sheet sizes

Sheet colors

Roofing device

Before covering the roof with ondulin, you need to understand the composition roofing pie, which is made for this type of roofing material. The construction of a roof covered with molded cellulose impregnated with bitumen is not difficult due to its light weight. It consists of the following elements:

Rafter frame. The roofing material is fastened to rafters made from natural wood with a cross section of 50xx150 mm, the pitch between which is 50-80 cm. Since the material is light in weight, the frame is usually not weighed down with additional elements.
Insulation. Before laying ondulin, thermal insulation material is laid between the rafters. The most commonly used mineral type insulation ( basalt wool, glass wool, slag wool).
Vapor barrier. The technology for laying insulation involves the use vapor barrier membrane, which protects the thermal insulation material from below from steam penetration and getting wet.
Waterproofing. To protect wooden elements frame and insulation against possible leaks or condensation, a waterproofing film is laid. The waterproofing is attached to the rafter legs using a construction stapler.
Counter-lattice. Before laying ondulin, counter-lattice slats are nailed on top of the waterproofing along the rafters, which create a ventilation gap necessary for air circulation inside the structure.
Lathing. The type of lathing is specified in the step-by-step installation instructions. Ondulin must be nailed to a continuous sheathing made of moisture-resistant plywood or lattice unedged boards, laid in increments of 10-15 cm so that the roofing material does not deform during operation.
Ondulin. The roofing material must be nailed directly to the sheathing with special nails, overlapping the sheets over each other by 10-15 cm.

Roofing pie composition

Please note that before covering the roof with ondulin, most professional craftsmen processing wooden frame elements antiseptic impregnations and fire retardants to protect against fire and rot.

Required materials and tools

Many inexperienced craftsmen wonder how to properly cover a roof with ondulin, and what is needed for this. The fastening of this roofing material is carried out without the use of special tools or expensive equipment, so installation is often done by hand. To build a roof from ondulin use:

Sheets of ondulin measuring 0.95 x 2.05 m are required to cover the entire roof area with a margin of 10-15% for trimming and overlaps.
Ridge profile for the entire length of the ridge, taking into account overlaps between elements of 10-25 cm.
Fastening elements. Special nails for ondulin with a rubber head are made of carbon steel and painted to match the material.
Beam with a section of 40x40 mm or 60x40 mm for the construction of sheathing, treated with an antiseptic.
Waterproofing membrane or film.
Sharp hacksaw for cutting sheets.
Lightweight nail hammer.
Screwdriver for fixing the sheathing.
Ruler, tape measure and construction pencil for taking measurements and markings.

Note! Before covering the roof with ondulin with your own hands, you need to establish scaffolding around the house or a high staircase that allows you to reach every corner of the slope.

Step-by-step manufacturer's instructions

Lathing requirements

Installation technology

Even without knowing how to attach ondulin, an inexperienced craftsman can easily cope with this task alone, since sheets of material are easy to process. However, do not forget that the reliability and service life of the roof depends on the quality of installation. The following step-by-step instructions are used for laying ondulin:

First of all, you need to place and secure a waterproofing film on the finished rafters. To do this, it is rolled out and cut into strips of the required length, which are mounted along the slope perpendicular to the rafters with an overlap of 10-15 cm. The film is fixed to the rafters with a construction stapler, and the joints are taped.
On top waterproofing material along rafter legs the counter-lattice slats are nailed down. To do this, use long nails or self-tapping screws.
A sheathing made of 4x4 cm, 5x5 cm bars in 10 cm increments or a solid one made of sheets of moisture-resistant plywood is nailed on top of the sheathing.
Next, they begin laying ondulin. Sheets of material must be laid with an overlap of 10-15 cm, starting from the bottom edge of the slope. The rows are mounted offset by half a sheet, maintaining a vertical overlap of 15-20 cm.
The sheets are nailed to the sheathing with special nails with wide rubber heads. It takes about 20 fasteners to fix each sheet.

Laying scheme

Layout of fasteners

Ridge profile installation

Not knowing how to install ondulin correctly, inexperienced craftsmen make mistakes when installing the roof. The main thing is to lay this material in dry, but not hot weather, since elevated temperatures lead to deformation of the sheets. It is forbidden to stand on the ondulin during installation, as it may break or change shape.

Video instruction

Ondulin (euro slate, onduline) has been used as a roofing material for more than half a century. During this time, it has proven itself to be excellent, facilitated by such advantages as ease of installation of ondulin, low weight and affordable cost.

Roofing ondulin is preferred by people who care about the environmental friendliness of their home. After all, Euro slate does not contain asbestos, which is prohibited in many countries; it is based on cellulose mixed with bitumen. And minerals and binding additives provide it with strength and reliability. In addition, a private house covered with ondulin is beautiful and elegant.

The warranty period for ondulin is 15 years, provided that the ondulin installation technology is followed. This is where we will stop. Let's consider step by step what requirements need to be met in order for the quality of work to meet the standards.

Do-it-yourself ondulin installation - instructions

Technology for installing an ondulin roof in stages.

1. Calculation of ondulin on the roof

The easiest way is to use the calculator on the seller’s website or contact a consultant. But in order to have an initial idea, you need to divide the total area of all roof slopes and divide by usable area one sheet. Add 5 to 15% for waste. The amount of waste depends on the complexity of the rafter system.

2. Installation of sheathing under ondulin

Due to the fact that ondulin is a flexible roofing material, its installation technology involves attaching sheets to a wooden sheathing. For roof sheathing under ondulin, 60x40 timber is used.

Sheathing pitch for ondulin

a slope angle of up to 10° (1:6) requires the installation of a continuous sheathing, otherwise the sheet will bend;

angle 10 – 15° (1:4) – sheathing pitch 450 mm;

angle over 15° – pitch 610 mm.

Nuance. Professionals advise not to skimp on the sheathing and to make it continuous in all cases. In this case, the sheets will not bend either from the heat or under snow or wind loads.

Installing additional sheathing slats An error in nailing the sheets can lead to the sheet becoming deformed, so the sheathing beam must be fastened correctly.

You can ensure their parallel arrangement if you use a pattern. Laying a piece of timber between the previous and subsequent sheathing timber will be a good help.

In the place of future fastening of the ridge strip, you need to install additional battens.

Note. Installation waterproofing film is not a mandatory step when installing an ondulin roof. Therefore, the need for its installation is determined by the owner.

3. Installing the valley strip

Please note that it is installed before the installation of sheets begins. Its installation is carried out on special clamps. You need to make an additional continuous sheathing underneath. The process of its arrangement is shown in more detail in the diagram.

Installation diagram for the valley strip Installation of the valley strip

4. Installation of ondulin sheets

Marking ondulin Installation begins with the correct marking. You need to draw with a pencil thin line, along which the screws will be screwed. The lines on the sheet are located at a distance equal to the distance between the sheathing bars.

Advice. To make the line even, despite the ondulin waves, you can do the following: mark the distance along the height of the wave, lay the sheet on the sheet and draw a line along the second sheet. Then the first one will have a smooth and clear stripe.

Cutting ondulin To prevent work at height from creating inconvenience, you must first cut the ondulin into certain pieces (if the cottage has broken slopes). You can cut ondulin using a jigsaw, grinder or hacksaw.

In order not to get confused about where to attach which sheet, you need to number them and put the numbers on the drawings.

Advice. To prevent the saw from getting stuck in the ondulin, it must be lubricated with oil.

How to attach ondulin correctly?

To do this you need to adhere to technology. First, let's start installing the first sheet. It is recommended to start work from the leeward side. Then the covering wave will not be subject to wind load.

Sequence of laying ondulin sheets taking into account wind load

In addition, due to some properties of ondulin, during its installation it is necessary to maintain a certain temperature regime.

Ondulin is mounted at temperatures from 0 to 30°. Working in this temperature zone eliminates two disadvantages of ondulin:

fragility to fracture. This is due to the fact that in colder times the risk of material damage and cracks increases.
Nuance. If you need to replace the sheet, it is better to pre-drill holes for the screw in the sheet.

stretching the material. Therefore, in hot weather, the material should not be laid stretched.

Advice. Many workers try to reduce installation time by nailing stretched sheets. When the temperature changes, such a sheet becomes deformed. Subsequently, in order to eliminate such defects, it is necessary to completely cover the roof.

Correct installation of the first sheet of ondulin will make installation easier. Therefore, you need to carefully align the sheet along the end and the cornice. At the same time, ondulin should not protrude beyond the cornice by more than 50 mm. Otherwise, water will overflow through the gutter drainage system, and the sheet itself may bend, which will not look aesthetically pleasing.

Nuance. The first and each subsequent sheet is firmly attached, only after checking for horizontalness. To do this you need to use a level.

The procedure for attaching subsequent sheets of ondulin is shown in the photo.

Ondulin is laid in a checkerboard pattern with obligatory longitudinal and transverse overlap. To achieve this, installation of the second row begins with half a sheet.

It is important to know that the amount of overlap is affected by the angle of inclination of the slope. Namely:

slope angle up to 10° - the longitudinal overlap is two waves, the transverse overlap is at least 200 mm.

an angle of 10-15° - the longitudinal overlap is one wave, the transverse overlap is at least 160 mm.

angle over 15° - the longitudinal overlap is one wave, the transverse overlap is at least 140 mm.

5. Laying ondulin on the roof

The reliability of fastening euro slate depends on the type of hardware used and the method of fastening it.

Self-tapping screws with a drill for metal Since all fasteners remain visible, other methods have not yet been invented, it is better to use hardware with a head that matches the color of the material. In addition, they consist of a nail, a wide head and a gasket - this ensures tight installation.

For metal sheathing, self-tapping screws with a metal drill are used.

Material prepared for the website www.moydomik.net

Nails with a special head For wooden sheathing, nails with a special head are suitable, which protects the metal from external factors.

Such nails require attention during installation.

It is impossible to cover a heavily hammered nail or one that is not completely hammered in with a head. As a result, the reliability of fixation decreases.

Nails with a monolithic head Professionals advise using new nails for ondulin. Their cap is monolithic and can withstand hammer blows.

The hardware is attached strictly to the wave, to its highest point. In this case, the lower and upper parts of the sheet must be secured in each wave, and in the middle - in a zigzag.

The hardware fastening diagram is shown in the photo.

Scheme for fastening ondulin with hardware at a sheathing pitch of 45 cm Ondulin fastening diagram with a sheathing pitch of 61 cm

How to properly attach ondulin is shown in the figure.

How to properly attach ondulin with hardware

6. Additional elements (ondulin components)

The installation of ondulin does not end there. In order for your country house to have a presentable appearance and the roof to be reliably protected from leaks, you need to install decorative elements. These include the ridge, cornice, wind strip and valley.

The ridge is mounted at the junction of two slopes. The mandatory overlap must be at least 120 mm. You can buy a skate, or you can make it yourself. To do this, the top sheets are inserted through the joint and nailed to the top of the opposite slope. True, this can only be done when it is hot outside and the ondulin is soft enough. The place where the ridge is attached can be decorated with a wooden plug.

Nuance. The ridge is installed on pre-installed battens.

Lining the tape under the ridge You need to place a special insulating self-adhesive tape under the ridge. If you skimp on it, the snow will be blown under the ridge and flow onto the roof. After all, waterproofing is not provided for ondulin. And, the design shown in the photo will reliably protect the attic or attic from rain and melt water.

Sealing tape under the overhang of an ondulin sheet. Tip. The same tape can be installed in the place where the ondulin sheet overhangs. This will prevent snow from blowing out from under the eaves strip, and will also allow you to implement natural ventilation in the attic. In addition, the attic will become inaccessible to small birds or insects.

The construction of unventilated roofs involves the use of sealant instead of tape.

The cornice or wind strip is installed according to the wave of the sheet. The overlap should be at least 10 cm.

Adjacent to a wall or around protruding elements. For this purpose, a special covering apron is used. Its use guarantees a sealed roof assembly.

Covering apron

7. Natural light

In order to ensure the penetration of daylight, you can install a hatch window under the ondulin. Ordinary roof windows are not suitable for these purposes.

Hatch window for ondulin Hatch window for ondulin

However, today the market offers such a material as translucent ondulin. During installation, a regular sheet is replaced with a translucent one, this can significantly reduce the time, complexity and cost of installing windows.

Translucent ondulin

You can give an ondulin roof an exclusive look by combining various colors during the execution of work.

Video instructions for installing ondulin

Conclusion

As we can see, working with such material as roofing ondulin You can cover the roof not only of a private house, but also of a garage, gazebo or bathhouse. If you adhere to the tips and recommendations, and also follow the instructions, you can install an ondulin roof with your own hands.

Tags: Roof Roof Ondulin Euroslate

One of the most popular methods of arranging roofing in private housing construction is laying sheets of roofing ondulin. Considering the specifics of this modern French roofing material, its installation technology has a certain number of features, taking into account which allows us to obtain a high-quality and durable roof.

Installation options and methods

On modern market building materials, roofing from is one of the most advanced roofing systems that are widely used throughout the world. Today there are several options and methods for installing this inexpensive but high-quality roofing material.

On the old roof

A significant advantage of ondulin is that there is no need to dismantle the old roof covering. It is enough to simply install a layer of insulation on which the roofing sheets are laid in accordance with the same technology as during the installation of a new roofing covering.

Laying stages on old roof:

pulling the rope along the lower segment of the bars and aligning the remaining vertical bars along it, installed at a distance of every fifth wave of the wave roofing material or every 60 centimeters;

fastening the vapor barrier across the slopes using mounting brackets in increments of 15 centimeters, followed by gluing the joints with mounting tape;

installation of a horizontal bar flush with the ends of the vertical sheathing and fastening at the points of intersection with vertical bars with 70 mm self-tapping screws;

place the layering of two sheets of old covering with a cut at the level of the horizontal sheathing;

laying thermal insulation and breathable membrane;

laying ondulin from a section of the roof opposite the prevailing wind.

On roofing felt

It is permissible to install onduline sheets onto the surface of old roofing felt, but all gaps in the old coating should be eliminated. For high-quality installation You should install a new counter-lattice along the length of the rafters and sheathing across the rafter system. Such work will allow condensation or moisture to not stagnate on the roofing felt. A beam with a cross section of 5x5 centimeters is used.

The counter-lattice is placed at intervals of the rafters, and the sheathing is installed at intervals of 60 centimeters. Further, all work on laying ondulin sheets is carried out according to the attached instructions.

New roof

When created from sheet ondulin new roof Pre-laying of high-quality sheathing should be carried out at intervals according to the angle of inclination of the slopes. After completing the sheathing, you should carefully mark the sheets of ondulin. To cut marked roofing material, a hacksaw is most often used, which is pre-treated with oil for high-quality sliding.

During installation, the following basic requirements must be observed:

the starting row of sheets should be secured on the side away from the blowing wind;
the next row of sheets is attached from half of the previous one;
The sheets should be secured along each wave.

DIY installation rules and technology

For continuous sheathing, used with a slight slope, moisture-resistant sheet lumber or thin tongue-and-groove boards are used. The maximum gap between such materials should not exceed five centimeters.

For slopes with average slopes, thinned sheathing with a distance between elements of 45 centimeters is required.

For a roof with a significant slope, it is necessary to install a thinned type of sheathing in increments of 60 centimeters.

Scheme and instructions for installing ondulin on the roof

By correct execution installation work is applied by the ondulin manufacturer to each manufactured product. Main stages self-installation roofs made of sheet ondulin are as follows:

To facilitate installation work, ondulin starter sheets should be attached to the opposite leeward edge of the roof. The second row begins with half a sheet of the first row, which forms three sheets at the corner joint;

fasteners are driven in along each wave on the end segment and overlap of the sheet, as well as on two sides of the side overlap. Attaching to the intermediate sheathing bars is done through a wave. Twenty roofing nails are used per sheet;

installation of the ridge elements begins from the opposite leeward side of the roof edge using an overlap of 12.5 centimeters. The place of fastening of the ridge elements is the wave of the roofing sheet joining the ridge and additional sheathing bars;

it is necessary to install valleys and gable elements, as well as correctly design the side roof joints at the junction with vertical surfaces using a covering apron;

installation ventilation system involves the use of a roof fan, a ventilation pipe and a special comb;

to design an exit to the roof surface and organize lighting attic space it is required to install a roof window, which is attached to each wave of the sheet at the joint. The top sheet is used to overlap the base of the roof window;

To perform high-quality waterproofing of joints between roofing surfaces and vertical surfaces, it is recommended to use Onduflesh insulating tape.

For more information about DIY installation, watch the video.

Cost of roofing work

Although roof covering made of sheet ondulin is easy to install yourself; many homeowners prefer to use the services of professional craftsmen who not only quickly and efficiently carry out this type of roofing work, but also provide a guarantee for all work performed.

The average price of roofing work “TURNKEY” without taking into account the cost of ondulin depends on the volume and type of work performed:

without dismantling the old roof, including cleaning the roof, installing counter battens and step lathing, as well as laying roofing ondulin, ridge, wind and cornice strips and chimney - 400 rubles per square meter;

instead of an old roof with strengthening and repair of the rafter system, including dismantling the roofing carpet of the old covering, strengthening and repairing the rafter system, installation of ondulin with waterproofing, as well as all accessories - 800 rubles per square meter;

a complete roofing pie with mauelrat, including insulation, wind insulation, waterproofing, vapor barrier and internal lining with the installation of ondulin - 1200 per square meter.

Let's sum it up

The basic rule for self-installation of ondulin is to carry out all work in strict accordance with the attached instructions;

you cannot skimp on the quality of lumber for sheathing, and all used in roofing system lumber must be treated with special antiseptic compounds;

The type and pitch of the sheathing should be strictly observed depending on the slope of the roof slopes.

Ondulin is one of the most popular roofing materials recently, which, due to its excellent performance characteristics and low price, has become very widespread.

Today, almost every roofing specialist knows how to cover a roof with ondulin. roofing work. The manufacturing technology of ondulin involves the use of cellulose, which is impregnated with bitumen and thermally cured resins under high temperature. On the front side, roofing sheets are coated with paint of a special composition, which gives them an aesthetic appearance and provides a high degree of protection from mechanical loads and moisture.

Nowadays, ondulin is made multilayer, which makes it possible to obtain moisture-resistant and environmentally friendly pure material with high mechanical strength. It has no harmful effects on humans and can be reused after recycling. With an area of the finished sheet of approximately 2 m2, it can be argued that ondulin is the most technologically advanced and quick way for roofing.

Advantages of working with ondulin

Covering the roof with ondulin provides many advantages, namely:

the roof will have a presentable appearance and a smooth surface;
ondulin is not subject to corrosion, resistant to chemically active substances and ultraviolet radiation, fungi and microorganisms;
provides excellent sound insulation and long service life;
low cost;
this material fits perfectly on radius bends and non-standard roofs;
guarantees easy and simple installation;
There is the possibility of individual choice of color scheme from the huge range of shades offered.

To cover the roof with ondulin with your own hands, you should know the main rules of its installation technology:

We cover the roof with ondulin correctly

Starting styling soft roof from ondulin, the need for thermal insulation and waterproofing should be taken into account. If insulation is used, they will be able to create the necessary ventilation gap between the roof and the thermal insulation. The marking of an ondulin roof is done with a colored pencil, which is the most acceptable option for a wavy surface. If you need to cut a sheet of ondulin, it is best to use a wood saw, which is pre-lubricated with oil, or a grinder.

The ondulin sheet weighs approximately 6 kg, which allows you to lift and install it yourself. Fastening sheets with nails must be done in the following places:

at the end of the sheet on each wave;
on each overlap (end and side);
The number of nails used for each sheet is approximately 20 pieces.

When attaching ondulin to metal surface self-tapping screws are used, which create more reliable adhesion between the roofing material and the sheathing. After fastening the ondulin sheets, the joints are waterproofed, which is done with a special insulating tape.

Roofing with ondulin can be done directly on top of old roofing materials that have lost their properties. Both partial replacement of roof elements and complete reconstruction with the installation of ondulin are also allowed.

Installation of the first row of the roof begins from the very bottom of the roof, on the opposite leeward side of the roof. The purpose of this is to prevent wind from blowing under the edges of the sheets to avoid mechanical deformation of the material. The underside of the roof should extend from the eaves board (eaves overhang), thereby preventing water from the roof from getting onto the eaves.

To install ondulin sheets on an old roof, you need to ensure the reliability and integrity of the main structural elements load-bearing structure. They must withstand not only the old roof, but also the load of new roofing materials. If necessary, the structure should be strengthened or the old roofing should be removed. The possibility of installation over old coatings has made ondulin one of the most unique and sought-after roofing materials that open limitless possibilities to construction organizations.

After mastering the theoretical material on how to cover a roof with ondulin, you can proceed directly to organizing these works and purchasing materials.

Signs of original ondulin

Today, a lot of enterprises have appeared on the construction market that produce soft bitumen roofing under various brands. But its quality is not always high, so it’s worth knowing the main signs of real, branded ondulin:

How to cover a roof with ondulin correctly with your own hands, video

Proper coating of the roof with ondulin with your own hands. Recommendations, rules for laying and fastening ondulin on the roof when self-installation along with the video.

Installation of ondulin: instructions for carrying out work

Ondulin roofing: how to install?
Basic rules for laying ondulin
Ondulin: laying technology
- Ondulin apron

Ondulin is a lightweight and durable roofing material in the form of corrugated sheets with high degree protection from the effects of adverse natural factors. Installation of a roof made of ondulin is a reliable and durable solution for the roof of any building, regardless of its type, purpose and climate region operation.

Installation of an ondulin roof is a reliable and durable solution for the roof of any building, regardless of its type, purpose and climatic region of operation.

If you choose ondulin, installing the roof will not take much time and effort. Covering the roof with ondulin is a lightweight and economical roofing structure.

In addition to a house or cottage, you can lay ondulin on a bathhouse, on outbuildings, or cover a gazebo with it. Unlike other roofing materials, ondulin can be installed over an old roof, which significantly reduces costs during repair work.

The ondulin installation diagram is quite simple. The main thing is that before covering your roof with ondulin, carefully study all the manufacturer’s recommendations. And we, in turn, will try to answer many questions that arise from the majority of ondulin buyers: how to properly cover a roof with ondulin, how to lay ondulin, how to cut ondulin, what kind of waterproofing and vapor barrier is needed for ondulin, how to make a roofing cake for ondulin? Just below are illustrated step-by-step instructions describing how to properly lay ondulin.

And here is a video instruction for installing ondulin on an old roof:

Ondulin roofing: how to install?

The technology for installing ondulin is described in some detail in the instructions that you receive when purchasing roofing material. It also serves as a warranty card for the manufacturer and supplier. The specified rules for installing ondulin and their compliance during the construction or repair of a roof are the main warranty requirement of the manufacturer. It must be remembered that the warranty only applies to ondulin, the installation technology of which is observed in full compliance with established recommendations.

Before covering the roof with ondulin with your own hands or calling a team of professional roofers, pay attention to the following features of covering the roof with ondulin.

Basic rules for laying ondulin

If you are installing a roof using ondulin and you need to step on already laid roofing sheets, we strongly recommend that you place your foot only on the crest of the wave, but not between adjacent waves!

Scheme for attaching ondulin to the roof sheathing.

Laying ondulin is possible only at above-zero temperatures. If roofing with ondulin is carried out at negative temperatures (up to -5°C), then the work should be carried out with great care. Installing a roof made of ondulin at lower temperatures is prohibited! Installing ondulin at ambient temperatures above +30°C is also not recommended.

How to attach ondulin? Ondulin is attached to the sheathing using special roofing nails, which form the roof frame. The technology for laying ondulin is 20 nails per sheet. Remember: this is a warranty requirement, and if this ondulin roofing technology is not followed, then there is a high probability of destruction of the coating in strong winds: your roof may simply “fly away”. Make sure that the builders you hire know how to install ondulin correctly.

The sheathing for ondulin is made of wooden beams with a section of 40x60 mm. The pitch of the sheathing under the ondulin depends on the roof slope:

up to 10° - solid (board, plywood, OSB);
10-15° - no more than 450 mm;
more than 15° - no more than 610 mm.

Ondulin coating technology strictly prohibits overlapping in one corner of four sheets. Such ondulin flooring may cause “heaving” of the edges of the material. The technology for covering a roof with ondulin recommends starting the second row of coating with ½ sheet so that an overlap of three sheets forms at the corner joint. In other words, before putting ondulin, you need to cut the 1st sheet of the 2nd row in half in the vertical direction, and lay the 2nd sheet with minimal overlap (in one wave) on the first one.

Working with ondulin is a simple process. Ondulin coating is light, flexible and slightly stretchable sheets, which some builders try to take advantage of. They strive with all their might to “reach” the edge of an unevenly fixed sheet. And at the very beginning everything looks quite beautiful, but after a short time your roof will begin to wave.

This table will help you decide when choosing roofing material.

So how to put ondulin correctly? When fastening ondulin, it is extremely important to follow the linearity of horizontal and vertical joints over the entire roof area. The laying pattern of ondulin does not allow the sheets to stretch like accordion bellows. Before nailing ondulin, make sure that the sheets of coating lie flat.

And, of course, no one has canceled the old statement “measure twice, cut once.” How to make a roof from ondulin, how to lay ondulin correctly, what overlaps and overhangs need to be made, is indicated in the instructions attached to the material. So, if you make the overhang too long, it will bend; if you make it short, sediment and debris will get underneath it. If you choose the wrong lathing step, you are guaranteed to have an ondulin roof repaired, since the coating can literally fail. And repairing ondulin is quite difficult process. Dismantle the attached sheet of ondulin (dismantling the damaged area), without violating its integrity. almost impossible.

Before working with ondulin, carefully read the instructions. After all, not only the 15-year warranty will depend on how to properly cover the roof with ondulin. These are also your costs, your time and your energy! We study the instructions, cover the roof with ondulin and don’t worry about anything!

Ondulin: laying technology

How to install ondulin on different roof slopes? The main requirement for ondulin coating is the pitch of the sheathing and the amount of overlap. If the roof slope is:

Scheme for laying ondulin sheets with dimensions depending on the angle of the roof slope.

From 5° to 10°, then, before laying ondulin, a continuous sheathing of edged boards, plywood or OSB boards. The overlap at the ends of the sheet is 300 mm, the side overlap is two waves.
From 10° to 15° - sparse lathing is performed with an interaxial distance of no more than 450 mm. The overlap at the ends of the sheet is 200 mm, the side overlap is one wave.
From 15° - sparse lathing is performed with an interaxial distance of no more than 610 mm. The overlap at the ends of the sheet is 170 mm, the side overlap is one wave.

Ondulin: laying sheathing beams

The sheathing beams are nailed to the rafters at the required center-to-center distance from each other. To maintain the parallelism of the sheathing, it is recommended to use a wooden jig (a piece of timber of a given length). When marking ondulin, the method of laying does not matter. The main thing is to carefully mark the wavy surface. To do this, you can use a piece of paper and a colored pencil (but not a marker!).

Ondulin roofing: material cutting technology

It is best to cut the sheets with a wood hacksaw with a small tooth, lubricating the blade with oil to prevent the tool from getting stuck. The use of circular or reciprocating saws is also allowed. How to cover a roof with ondulin? Easily! Ondulin is one of the lightest sheet roofing materials. One sheet has a mass of about 6 kg. As a result, even one person can lift and stack sheets.

How to cover a roof with ondulin: order of laying sheets

Laying sheets should begin from the edge of the roof located on the opposite side of the prevailing winds. The second row starts with ½ sheet to create an overlap of three rather than four sheets at the corner. This method makes installation much easier.

Ondulin: installation of fasteners, valleys and how to cover roof ridges

Sequence of laying ondulin sheets.

The sheets must be nailed in each wave at the ends of the sheets, in the end overlap and at both edges of the side overlaps. One sheet requires 20 nails. Their location diagram is shown in the figure. To place the fasteners exactly along the centerline of the sheathing beam, you will need a taut rope.

For their design, special elements are used - “Ondulin valleys”. To install them, additional sheathing will be required. The fastening of the ridge elements begins on the leeward side with an overlap of at least 125 mm. Nails must be driven into each wave of the sheet joining the ridge into the additional beams of the sheathing. The side joint of the roof with the vertical wall is formed using an Ondulin valley, the waterproofing of which must be carried out with special care using silicone sealant.

The gable can also be designed in such a way that the edge of the ondulin sheet is folded and secured to the gable board. But this method is only possible at positive temperatures (above 15°C). For correct device roof ribs, it is necessary to use the Ondulin gable or ridge element.

Ondulin apron

Additional elements for roofing made of ondulin.

At the end joints of the roof with vertical walls, chimneys and ventilation pipes, you need to use an Ondulin covering apron. The joint of the apron is reliably waterproofed with silicone sealant. The apron is nailed to the ondulin sheet along each wave. A special tong element Ondulin is used to design the tongs. In extreme cases, it is possible to use a ridge element.

A roof window is used to provide access to the roof surface and illumination of the attic space. Its fastening is carried out along each wave. Top sheet ondulin is laid with an overlap over the base of the window. To design ventilation duct outlets through the roof, the element “ ventilation tube Ondulin." Its fastening is carried out along each wave. The top sheet of ondulin is laid with an overlap over the base of the ventilation element.

To eliminate gaps on the eaves and between the ridge elements and sheets of covering, “Ondulin frame filler” is used. Its use depends on the characteristics of the ventilation organization of each specific roof. If it is necessary to secure ondulin sheets to the metal roof sheathing, self-tapping screws are used. They are screwed in using a screwdriver equipped with an appropriate attachment.

Why do you need ONDUFLESH self-adhesive insulating tape:

Installation of roofing pie with Ondulin coating.

Self-adhesive insulating tape ONDUFLESH - reliable waterproofing of the junction of the roof and the chimney.
Self-adhesive insulating tape ONDUFLESH - reliable waterproofing of the junction of the roof and the roof window.
Self-adhesive insulating tape ONDUFLESH can also be used to decorate roof valleys.
Self-adhesive insulating tape ONDUFLESH will improve the waterproofing of the roof eaves made of ondulin.
Self-adhesive insulating tape ONDUFLESH will help to perform reliable waterproofing of the roof with any external superstructures.

How to cover a roof with ondulin: step-by-step instructions

Ondulin is a lightweight and durable roofing material in the form of corrugated sheets with a high degree of protection from the effects of adverse natural factors. Installation of a roof made of ondulin is a reliable and durable solution for the roof of any building, regardless

Ondulin is the most popular roofing material of our days.

This material is different high strength, durability, affordable cost and ease of installation.

The use of natural materials in the production of ondulin allows the finished product to retain its color perfectly.

The service life of ondulin is approximately 50 years.

The material is environmentally friendly.

It does not perceive moisture in any form at all.

Fungi and microorganisms do not multiply in the material.

Ondulin perfectly insulates the room sound and heat.

It doesn't weigh much.

It is flexible and elastic and can take any shape desired by the installer.

This makes the ondulin installation process very simple.

Basic rules for roofing

There are very few of these rules.

But you should know them.

So:

When installing ondulin sheets, step only on the convex parts. It is prohibited to step into the furrows between the waves!
Installation begins only when the outside temperature is positive. Ideally, this is the end of spring - beginning of summer.
If this is not possible and the ondulin sheets have to be laid at low temperatures, then the installation should be carried out with great care. Installing ondulin at temperatures below - 5 degrees is strictly prohibited.
It is also undesirable to install ondulin on the roof at very high temperatures. Still, it contains bitumen;
To attach ondulin sheets to the sheathing boards, special nails are used. The installation technology provides that 20 nails will be used per sheet of material.
This is a warranty requirement and if you hammer in fewer nails, there is a high probability that the ondulin will collapse or be torn off the roof under the influence of wind. It is for this reason that the installation process must be carried out under constant supervision.
And if you are not laying ondulin with your own hands, but have hired people, then you should make sure that they know about 20 nails per sheet and follow this rule;
the lathing to which the material is attached is made of a wooden block with a cross-section of 60 x 40 mm.
The pitch of the sheathing depends on the calculated angle of inclination of the roof slope:

When the angle is up to 10 degrees, a continuous covering of boards or OSB is made.
If the angle is 10-15 degrees, then the pitch between the sheathing bars is 450 mm.
When the angle is more than 15 degrees, the pitch of the beams can be up to 610 mm. If the pitch of the sheathing bars is calculated incorrectly, then most likely the entire roof will fail.
And you'll have to do everything again. Since it is almost impossible to remove a nailed sheet of ondulin without damage.

The technique of laying ondulin sheets prohibits overlapping four sheets of material in one corner. Very often this leads to deformation of the extreme parts of the material;
When installing the material, you should monitor the amount of overhang. If the overhang is very large, then it is quite possible that the sheet will sag in this place.
If the overhang, on the contrary, is very short, then wind-blown debris will get stuck under it and atmospheric precipitation will get in;
Before starting actual installation work, you should carefully study the installation instructions. After all, the durability of the roof of your home depends on how well the installation is done.

Step-by-step instructions for installing sheets

Before laying ondulin, the sheathing should be filled. The sheathing bars are nailed to the rafters at the required distance from each other.
To maintain the parallelism of the sheathing bars, use wooden block the required length - conductor.
The laying method does not affect the marking of ondulin in any way. The main thing is that the markings are done carefully.
To do this, use a colored pencil or marker and a convenient piece of paper.
Ondulin sheets are best cut with a regular wood hacksaw, but one with small teeth. To prevent the hacksaw from getting stuck in soft material, it should be lubricated with oil during operation.
The use of reciprocating or circular electric saws is also acceptable.
The weight of one sheet of ondulin is 6 kg. Even one person can lift it onto the roof and lay it down.
They begin to lay sheets of material from the edge of the roof, which is located on the opposite side from the prevailing winds. The second row of sheets begins by laying half a sheet, so that there is then an overlap of three sheets in the corner.
With this installation method, installation is much faster.
The sheets should be nailed to the sheathing at the ends of the sheets in each wave, also at the edges of the overlaps on both sides and in the end overlap. One sheet is nailed with 20 nails.
To ensure that the fastening occurs exactly along the centerline of the sheathing bar, pull the rope between the outermost nails.
Special elements should be used to install valleys. To install them, it is necessary to arrange additional sheathing.
Attaching the ridge elements begins on the leeward side. Definitely with overlap.
The amount of overlap is 125 mm or more. When attaching the element, nails are driven into each wave of the sheet that joins the ridge.
The design of the side joint is done in exactly the same way as the design of the valleys. For waterproofing, a special silicone sealant is used.
To design a gable, as a rule, the edge of a sheet of material is folded and secured to the gable board. But in order for this method to be used, it is necessary that the temperature outside be high.
Then the ondulin sheet softens and bends easily.
In order to properly arrange the roof edge, ridge or gable elements are used.
At the end joints of ondulin sheets with vertical walls, ventilation and chimneys use a covering apron. For reliable waterproofing Silicone sealant is used at the joints.
The apron must be nailed to the material at each wave.
To design the tong, a special tong element is used. Sometimes, as a last resort, a ridge element can be installed.
In order to organize lighting in the attic room, use a roof window. It is fixed on each wave.
The top sheet is laid so that there is an overlap over the base of the window.
To issue an outlet through an ondulin roof ventilation ducts, use a special element called “ondulin ventilation pipe”. They strengthen it on every wave.
The top sheet should be laid overlapping over the base of this element.
In order to eliminate the gap between the sheets, ridge elements and on the eaves, “frame filler” is used.
If the sheathing elements are not wooden, but metal, then self-tapping screws are used to fasten the ondulin sheets. You cannot screw them in by hand.
A screwdriver is required.

Laying over an old roof

In principle, if a decision is made to install a roof made of ondulin, then it is better to dismantle the material that was previously used.

But if you wish, you can lay ondulin on top of the old material.

It all starts with preparation.

First of all, we inspect the old material.

We remove everything from the roof that shouldn’t be there: branches, leaves, other debris.

All branches that come into contact with the roof should be trimmed.

If this is not done, then in a strong wind such branches will probably break and damage the roofing material.

If during inspection any defects are found: chips and cracks on slate, deformation of corrugated sheets or metal tiles, bubbles on roofing felt, then they should be eliminated.

Cut the bubbles.

Straighten the bent pieces.

Nothing should interfere with the installation of ondulin.

Now you need to arrange the sheathing.

But it is not required everywhere.

If roofing felt is laid on the slopes and no serious defects are identified, then the sheets can be mounted on the old sheathing.

If ondulin is to be installed on a seam roof or corrugated sheeting, then two lathings are made:

vertical sheathing is necessary so that the protrusions on the metal roof do not interfere with the installation of horizontal sheathing;
horizontal lathing (standard for ondulin).

The technology for laying ondulin sheets is standard.

We install additional elements

One of the important elements on the roof is the valley.

That is, the internal angle formed by two slopes.

In this place there is a high probability of leaks during a snowy winter and therefore its construction is approached with special care.

More about the device.
About repairing the roof at the dacha in. Repair various types roofs: tiles, metal tiles, roll tiles, slate.
About installing rafters with your own hands. Requirements for the rafter system, design, types and features of rafter systems, installation methods.

In those places where valleys are formed, at the stage of installing the sheathing, a separate, reinforced sheathing is made.

The width of the board must be at least 100 mm.

Two boards are laid along the line of intersection of the slopes.

The valley gutter is placed exactly between the boards.

And the valley shelves rest on these boards with their entire plane.

We install the valley from ondulin:

We begin the installation of elements from the cornice. Place the first element flush with and in upper corners fix with two self-tapping screws;
We lay the following elements with an overlap of 15 cm;
We mark and cut ondulin sheets. To do this we use a hacksaw for wood, electric jigsaw or a hand-held circular saw;
We place the sheet on the sheathing so that the cut coincides with the boundaries of the valley gutter. Now the ondulin and valley can be secured.
Nails should be driven in at a distance of 5 cm from the edge of the sheet into each wave. At the same time we fix both the ondulin and the valley;
We cut the first element of the valley flush with the cornice.

Gable element ondulin has a length of 1.04 meters.

The useful length of this element is only 96 centimeters, because 8 centimeters are spent on overlap.

Installation of gable elements begins from the eaves to the roof ridge with an overlap.

There are transverse protrusions on the elements - these are the overlap areas.

used to decorate the ridge.

The length of the element is 1.06 meters.

Useful length 98 cm and 8 cm overlap.

To decorate the ridge, a covering apron made of ondulin is installed on both slopes with an overlap of 4 cm.

A distance of 1 cm is left between the upper edges of the covering aprons so that the air can fully escape.

The joint of the aprons is covered with a ridge element.

A ridge end element is installed on each side along the edges of the ridge.

Fastening is carried out in each wave of the sheet, which is located below.

When purchasing ondulin sheets, you should know that sheets and additional elements when they are produced by the same company.

The same goes for sealants: tapes and pastes.

So if you are interested high quality roofing, buy everything immediately, in one place.

And by appearance There will be no differences, and everything will be much easier to install.

And the quality of the roof will be very high!

Video about how to cover a roof with ondulin.

Coating the roof of a bathhouse with ondulin is one of the most popular solutions. And this is not at all due to the low cost of the roofing, but to the operating features, the loads acting on the roof of the bathhouse and the ongoing processes.

We can safely say that covering a bathhouse with ondulin is more cost-effective than, for example, metal tiles. Why?

When using the bathhouse for its intended purpose, the temperature and humidity in the premises are very high. Steam penetrates through the ceilings and accumulates in the attic. If the roof is not insulated, then condensation settles on the lower part of the roofing covering and flows onto wooden rafters and lathing. Moreover, the more low temperature air outside, the more moisture settles on surfaces. And moisture, as you know, is the main enemy of any roof.

Let's consider another situation when the bathhouse is periodically used in winter time when there is a layer of snow on the roof. Metal roofing coverings have high thermal conductivity. When the roof warms up, the snow cover begins to melt and then freeze, forming ice. In such conditions, corrosion processes rapidly progress, which leads to the need for maintenance, repair or even replacement of the roofing covering.

Taking into account all of the above situations, we conclude: a bathhouse requires a roofing covering with low thermal conductivity and impervious to moisture. Optimal solution– ondulin, which:

during the production process it is impregnated with bitumen on all sides, after which it tolerates operation in high humidity conditions;
does not collapse due to a few scratches;
heats up quickly and prevents condensation from appearing on the surface;
does not make noise when it rains;
dries quickly;
It is lightweight, which reduces the load on the foundation.

However, you should not expect that ondulin will last 50 years. This material is not characterized by high strength and wear resistance. Provided that all installation rules are followed, the roof will last 15-20 years, after which it will be necessary to update the coating due to the loss of ondulin’s original shade and, possibly, shape.

Important! Among the disadvantages of ondulin is its high flammability. But this material is not prone to spontaneous combustion, it only supports combustion. This disadvantage can also be considered as an advantage, since if the fire quickly escapes, it is possible to save the main part of the building.

Prices for ondulin

Types of ondulin

Ondulin is produced in three versions. The sheets have different sizes and weight, but are produced using the same technology.

Name	Technical specifications	Peculiarities
	195 x 96 cm – dimensions. 3 mm – thickness. 6.3 kg – weight.	The sheets have markings that make it convenient to drive nails into. There is a water barrier lock. There are 10 waves on the sheets.
	195 x 76 cm – dimensions. 3 mm – thickness. 5 kg – weight.	The narrowest eight-wave sheets. When installing narrow sheets, there will be more longitudinal overlaps, and accordingly, the overall rigidity of the roof and its load-bearing capacity will increase.
	100 x 75 cm – dimensions. 2.6 mm – thickness. 2.5 kg – weight.	The best option for baths with a small or complex-shaped roof. Small sizes eight-wave sheets reduce the amount of trim and waste.

The waves of all types of ondulin are the same - 9.5 cm pitch and 3.8 cm height. To minimize the amount of waste when arranging the roof, you can combine different sheets.

Rules for installing ondulin

The installation rules are as simple as possible; even those who have never installed roofing before can remember and apply them.

Bitumen sheets are attached either to a solid or sparse sheathing, observing the recommended overlap values. The exact data is presented in the tables below.

Data for roofs with a slope of 5-10 degrees.

The sheathing is built continuous.

Important! In all situations under consideration, the edge of the ondulin sheet on the eaves cannot be further than 35 mm from the edge of the sheathing.

Data for roofs with a slope of 10-15 degrees.

Data for roofs with a slope of more than 15 degrees.

Parameter		DiY	17-27 degrees	More than 27 degrees
Lathing pitch, cm	61	61	26,7	43
End overlap, cm	12	17	20	14
Overlap on the sides, number of waves	1	1	1	1
Cornice overhang, cm	7	7	7	7
Number of nails per 1 sheet, pcs.	20	16	14	13

Important! In regions with large snow load It is recommended to do more frequent lathing and increase the overlap of sheets.

For continuous sheathing the following is used:

FSF plywood;
edged/unedged board;
DSP boards;
OSB-3 boards, etc.

Prices for FSF plywood

FSF plywood

Sparse lathing is made from:

boards with a thickness of at least 25 mm;
bars with a thickness of at least 25 mm.

Additional elements (depending on the design of the bathhouse roof) may include:

valley strips 100 cm long, 50 cm wide;
ridge strips 100 x 50 cm;
sealing tape 250 x 30 cm;
Sealing tape “Onduflesh”
gable strips 100 x 21 cm;
nails 70 mm long;
covering apron 93 cm long, 1.5 mm thick;
polyethylene foam filler, thickness 19 mm, length 85 cm;
vapor/waterproofing/superdiffusion membrane “Ondutis”.

General rules for performing work on installing bitumen sheets.

Rule	Description
	When working on the roof, be sure to use a safety harness and rope. Safety ropes must not be attached to the heads of chimneys or ventilation pipes. To move along the roof, you must use a ladder with a hook and ladders with transverse bars to support your feet.
	Rain, hail, fog, ice, wind with a speed of more than 10 m/s - in such weather conditions it is prohibited to lay sheets.
	Bitumen sheets are laid strictly at air temperatures above -5°C, but not more than +30°C. In hot weather, ondulin becomes too plastic and inconvenient to work with, especially for novice craftsmen.
	It is convenient to mark the sheets with a colored pencil, using a ruler, a strip, a stretched thread or the smooth factory edge of another sheet of ondulin.
	Determine the direction of prevailing winds for your area. Laying sheets must begin from the lower edge of the roof, on the side where there is no wind.
	It is highly not recommended to stretch or compress bitumen sheets by more than 1 cm.
	The second, and then each even row should begin not with a whole sheet, but with a sheet sawn in half lengthwise. Four corners of the sheets should not meet in one place at once, otherwise deformation of the roofing material cannot be avoided.
	● All nails are driven into the upper crest of the wave at right angles to the sheathing. ● The first four nails are driven into the corners of the sheet. ● Nails are driven into each ridge from below and above. ● In the central part, the nails are driven through one wave so that the ondulin does not deform. ● Nails are driven into the overlapping edge wave during installation of the next sheet.

Prices for vapor/waterproofing, superdiffusion membrane “Ondutis”

Calculation of roofing and additional elements for the roof of a bathhouse

Step 1. Calculation of the number of sheets.

First, you need to measure the roof.

Initial data: ridge length 8 m, gable length 16 m, slope length 4 m, total roof area 64 m2.

For the calculation, we take a sheet of ondulin 1 m 95 cm long and 95 cm wide.

The useful area of the sheets depends on the roof slope:

5-10 degrees – 1.29 m2;
10-15 degrees – 1.54 m2;
15 degrees and above – 1.56 m2.

In our case, the useful area of one sheet will be 1.56 m2.

To find out the number of sheets, you need total area divide the roof by the usable area of one sheet and round up to the whole value.

64 m2: 1.56 m2 = 42 sheets.

Professionals advise purchasing sheets from stocks of 5-10% of total number. So, for a roof with an area of 64 square meters, it is recommended to purchase 45 sheets of ondulin.

Step 2. Calculation of the number of ridge strips.

In addition to the bitumen sheets itself, you will need a ridge strip. The useful length of one plank is 85 cm.

Accordingly, we divide the length of the roof ridge by the useful length of the strip and get the required amount.

8 m: 0.85 m = 10 planks.

Step 3. Calculation of the number of gable strips.

We use the formula that was used to calculate the number of ridge strips.

The useful length of the gable strip is 95 cm.

16 m: 0.95 m = 17 tongs.

Plus one spare tong, for a total of 18 pieces.

Step 4. Calculation of the number of nails.

One sheet of ondulin must be secured with twenty nails. Multiply the number of sheets by the number of nails.

45 x 20 = 900 pieces.

You will also need nails to secure additional elements, so it’s worth taking extra so as not to interrupt your work due to suddenly running out of hardware.

We cover the roof with our own hands. Instructions

Stage 1. Mount the sheathing under the ondulin. Consider the slope of the roof to accurately determine the distance between the boards.

Before you begin laying the covering, you need to nail bars under the gable and ridge strips to make the structure more rigid.

Secure the bars at a distance of up to ten centimeters from the center of the ridge bar. This distance is selected depending on how steep or gentle the slopes are. It is best to try the skate on the roof in advance.

Stage 2. Attach a special apron strip that bends at different angles to the cornice. Due to its design, the element can be fixed at any distance from the edge of the cornice.

Attach the elements with a five-centimeter overlap.

Stage 3. Install the wind board 3 cm above the level of the sheathing.

Prepare the roof covering for installation. Trim if necessary. Install the first sheet of covering so that its long edge meets the wind board. If a drip line was previously installed, install the sheet flush with the edge of the roof.

If a drip is not provided, the sheet should hang over the edge of the roof by no more than five centimeters.

Stage 4. To protect the under-roof space from birds, insects and debris, use eaves infill. To ensure ventilation of the under-roof space, make holes in the filler by squeezing out the material with a suitable tool.

Stage 5. Begin the fastening process.

The new nails have a strong, monolithic head. The shade of the cap matches the color of the roofing material. Drive the nails in with a hammer, placing them perpendicular to the covering and sheathing boards.

Stage 6. If it is necessary to install gable elements, then fix the wind board tightly to the ondulin, and the upper edge of the board should be 35 mm higher than the surface of the sheathing.

The forceps are mounted from bottom to top. The overlap of the tongs on each other is 12-15 cm.

Drive nails in from above and from the sides in increments of 31 cm, and pay special attention to fixation in places where there is overlap.

Stage 7. Attach the skate. The planks are fastened taking into account the direction of the winds. Determine which direction it blows most often and mount the skate on the other side.

Take the sealant (cornice filler), clear the holes and insert it under the strip.

Nail the ridge along each underlying wave of ondulin, each side in turn.

Install the following ridge strips with an overlap of 15 cm and so that the hydraulic barriers coincide.

Video - Analysis of possible errors

Internal junction of slopes

It is designed using a valley strip.

Stage 1. Secure boards or beams that will provide additional support for the plank. The plank itself will be attached to these boards.

Stage 2. Take a sheet of roofing and fix it on the lower slope. Trim it if necessary.

Do not forget about the order when hammering in fasteners.

Stage 3. Apply Ondutis BL sealing tape to the overlap areas of the valley elements for better roof tightness.

Stage 4. Nail the valley strip. Drive a nail into each ridge of the covering underneath.

Stage 5. Secure the seal.

Start attaching the sheets on top of the plank. The bottom edge should not be further than seven centimeters from the fixation point. Along the bottom edge, drive fasteners into each ridge.

Let's consider an example on a roof with a slope angle of more than 15 degrees.

In this case, a sparse sheathing of boards is installed under the ondulin with a pitch of 61 cm.

Stage 1. Attach additional boards to the lower slope. Nail them in such a way that they support the fasteners of the tongs.

Stage 2. Take the sheet and install it on the lower slope of the sloping roof. Drive in the hardware from below, then from above, and then in the center in a checkerboard pattern through one wave.

Stage 3. Attach a sealant to the top edge of the secured sheet. Lay gable strips on top with an overlap of 15 cm.

At the bottom, fix the bar with nails into each wave of the underlying ondulin.

Important! The bottom edge of the sheet should not hang more than 7 cm from the fastening point.

Valley strip: installation

Endova is a roofing element located at the junction of two slopes (internal corner).

Stage 1. There should be a continuous base along the axis of the valley. The width of the lathing is at least 25 cm from the central axis of the plank.

Stage 2. Place elements from bottom to top. Attach the first plank with the lower edge extended by 5-7 cm; in the future, it is not difficult to trim off the excess.

On a note! To align the valley strip relative to the axis as accurately as possible, secure it with a construction stapler on four sides. Drive the staples closer to the edges.

Lay and staple the remaining elements in the same way with an overlap of 15 cm.

Stage 3. Cut the ondulin sheets extending onto the valley strip at a distance of 5-6 cm from the valley axis.

Attach the sheets on both sides of the valley. Drive fasteners into each wave at a distance of 3-5 cm from the edges of the plank.

Horizontal junction of roof and wall: sealing

Relevant for bathhouses with adjacent verandas or terraces, as well as bathhouses attached to the house.

To design the junction, a covering apron and Onduflesh Super tape are used.

Stage 1. Nail an additional board or beam onto the roof sheathing next to the wall to ensure greater structural strength.

Stage 2. Install the roof covering.

Stage 3. Lay the covering aprons overlapping in one wave. One side of the additional elements should be adjacent to the wall, the other should lie on bitumen sheets.

Fix the lower part of the elements with nails in each wave. Additionally, secure the upper part of the apron with self-tapping screws if the connection is not tight.

Stage 4. Cut a 15 cm wide strip from the Onduflesh Super tape. Apply the tape over the apron, extending onto the wall.

Stage 5. Secure the top of the sealing tape metal strip, into the holes of which screw self-tapping screws.

Connecting a sloping roof to a wall: sealing

Relevant for bathhouses with a porch with a gable roof.

Stage 1. Nail a board or bars close to the wall onto the sheathing.

Stage 2. Secure the roofing material.

Stage 3. At the junction of the wall and the covering, stick “Onduband” or “Onduflesh Super” to seal the joint.

Stage 4. Screw a metal strip to the top edge of the tape.

Secure the lower edge of the tape with roofing nails.

Chimney pipe passage: installation of additional elements

Almost every bathhouse has a chimney. The only exceptions are saunas with electric heaters. Passage place chimney through the roof must be properly designed to prevent leaks.

Stage 1. Start by finishing the front wall of the pipe. Try on the covering apron - it should be adjacent to the pipe so that there is 1 wave to the right and left of the walls).

Trim off the excess with a mounting knife.

Place the apron in place and secure it with nails, and do not drive them into the outer waves.

Seal the corners of the apron with pieces of Onduflesh Super tape.

Stage 2. Attach the apron strip to the side walls of the pipe (side connection).

Trim off the excess. Nail the apron to the additional sheathing bars installed in advance.

Stage 3. Apply sealing tape to the back wall of the pipe, as well as over the aprons. A 15 cm wide tape is enough for this.

Secure the sealing tape and apron with metal slats.

Apply polyurethane sealant between the top edge of the splashback and the wall.

Stage 4. Attach an additional sheet of ondulin to the back wall of the chimney.

Bathhouse roof repair. Step-by-step instruction

Let's consider the option of updating the roof of a bathhouse without dismantling the old covering, which in this case is represented by galvanized corrugated sheeting.

With the help of ondulin, you can eliminate all the shortcomings of the old roof:

poor-quality joints leading to leaks;
increased wear of material with high thermal conductivity.

Stage 1. Take measurements and prepare boards with a thickness of at least 25 mm for installation of the sheathing and counter-lattice.

Nail the boards over the old roofing, placing them parallel to the ridges of the corrugated sheeting.

Perpendicular to the fixed boards, nail the sheathing under the ondulin. The recommended sheathing pitch can be found in the tables above.

Stage 2. Begin laying and fixing the ondulin sheets. Due to the low weight of the sheets, increased load on the bearing structures structures and foundation.

Stage 3. Fix the additional elements.

Roof repairs are carried out with the maximum short time and at minimal cost.

Video - Option to update a slate roof

Useful life hacks from professionals

Tip 1. You can cut ondulin crosswise using a regular wood saw. To prevent the cutting edge from becoming clogged with bitumen, periodically moisten it with water. You can also use silicone grease or oil.

But it’s most convenient to use a jigsaw. And to clean the knife, just saw any unnecessary piece of wood.

Cut bitumen sheet along the wave you can use a regular construction knife.

Tip 2. The nails need to be driven in, slightly recessing the head into the coating. But at the same time, it is important to calculate the effort so as not to break the sheet with a hammer when trying to hammer the hardware as deep as possible.

Video - How to hammer nails correctly

Tip 3. Dismantling an already nailed sheet without damaging it is not only problematic, but in most cases impossible. This is always worth remembering. Make sure that the sheet lies perfectly flat, only then begin fixing. It is for this purpose that a guide thread is pulled along the lower edge of the sheathing.

Tip 4. If it becomes necessary to walk with your feet on the roofing, then never step between the waves. Place your feet exclusively on the upper ridges.

Tip 5. Do not under any circumstances throw away the installation instructions that will be included with the roofing material delivered to the site. Firstly, these instructions indicate all the necessary distances, overlaps and overhangs. And secondly, this instruction is a warranty card for the materials.

Tip 6. Take care of your ondulin roof to extend its service life by several years. Check the condition of your roof twice a year. Best time for this purpose – October and May.

Make sure that the branches of shrubs and trees located near the bathhouse do not come into contact with the roof. If necessary, trim them in a timely manner with pruning shears, otherwise roof repairs cannot be avoided.

Clean ondulin with a broom at least twice a year. IN spring period You need to remove the garbage that has accumulated over the long winter, and in the fall you need to remove all the fallen leaves. All the debris that remains on the roof will definitely begin to rot. The roofing itself is unlikely to be quickly destroyed by this, but its service life will definitely be reduced.

Don't forget to clean your gutters.

On a note! It is much more convenient to clean up immediately after the rain.