How to cover a greenhouse with film. How to properly cover a greenhouse with film

Hello! We have a simple greenhouse at our dacha; my father-in-law and I built it with our own hands. We attached the film to the frame, everything held together, and we went home. We arrive next weekend, and the covering was torn off by the wind. Tell me how to properly attach the film and which film is better to choose so that it does not tear off and so that it lasts until the end of the season. Thank you in advance.

Good afternoon Thanks for the question.

If you are making a cover for a simple greenhouse with your own hands and want it to last at least one season, you need to choose the right film. It must be dense and strong, at least 150 microns thick. Preference should be given to light-stabilized material intended for use in conditions of constant sunlight. If the film lacks stabilization, it may become cracked within a month. When installing a roof, you can use a second layer of material, because rain creates an accumulation of water in the joints of the structure.

Attach the film covering to wooden frame preferably with self-tapping screws, construction pins or small nails with large heads. The first two options are preferable for so-called collapsible greenhouses, which are put away for storage for the winter.

If, in the manufacture of the greenhouse base, no wooden beams, and PVC pipes mounted on rods made of reinforcement (arched summer greenhouses are made using this technology), then the film is secured using special brackets. Increases the reliability of the design wooden slats, holding the covering at the base of the greenhouse.

If by the end of the season the material has retained its performance characteristics, then it can be used in next year. In autumn, the film covering should be carefully removed, washed and dried. If the film is not a single sheet covering the entire greenhouse, but a collection of individual fragments for each structural element, then it is advisable to sign each piece when removing it from the frame. Otherwise, in the spring you will have to guess for a long time which element of the structure this or that fragment of film was intended for.

It would seem that in the era cellular polycarbonate How else can greenhouses be built under film if it should have long since become a thing of the past? When is polycarbonate stronger than glass, can it bend and not break from the wind? In fact, there are still many dissatisfied with the new material: polycarbonate is expensive, it can begin to bloom, and after a few years it transmits light somewhat worse. It also breaks under the snow and is quite troublesome to remove for the winter. But with film it’s still easier in many ways. The main advantage of polyethylene is not even that it is cheap - but that it transmits maximum light, while glass retains some ultraviolet rays, and polycarbonate is not very transparent at all. As for durability, that’s still debatable. So, in middle lane In Russia, 200 micron film lasts three seasons; if it is also light-sensitized, then all four. But reinforced film with fishing line lasts up to 8 seasons - which, you see, is not at all short, especially considering its price. Go ahead?

What kind of film is best to cover a greenhouse?

Greenhouse owners know that a special film was once sold - no drops hung on it, but immediately flowed down an inclined slope. But then such production was stopped, allegedly due to the high cost of raw materials, to which special minerals were added. Therefore, today you won’t find real winter greenhouses and greenhouses under film – all because of the humidity. After all, in cold weather you won’t open the door to the street - and therefore all the drops due to its cheap properties modern material will be over your head. In spring and summer there are no such problems, of course. Therefore, if the greenhouse under the film was made in order to grow in it all year round– , it increases CO2 and fights excess humidity well.

The so-called heavy-duty greenhouse film is also sold on the market. Also, not many people know about high-quality Italian film of 200 microns - it is folded 4 times. Just how to cover a greenhouse with such a film is another question - those who have already practiced this claim that sometimes it is necessary to involve up to 10 people! But the greenhouse turns out to be covered with one solid canvas, high-quality and quite durable. Look, maybe these are sold in your area?

How are greenhouses with multilayer film built?

Two layers of film will withstand short-term frost without problems - but if you heat the greenhouse, this is not a problem at all.

But here’s how to cover greenhouses with three layers of film (which is especially important for northern regions): the second layer ends up inside the frame, and between the two layers there remains from 7 to 10 cm. But with the third you will have to tinker: nail the crossbars onto the internal racks so that the height in the center is about 2 m, and on the sides - 1 m 20 cm There should be 3 meters between the crossbars, and take a film of the same width. Nail it down with strips of conveyor belt. So inside the greenhouse, it’s as if there’s another one, and between the films themselves there are two whole air gaps. Summer residents call such structures “thermos” - they are so warm and comfortable for plants. But in the spring you can safely remove the third layer - it is not needed yet.

How to properly attach the film to the greenhouse?

Many experienced summer residents cover the greenhouse with film using 2-3 cm strips of conveyor belt, and nail it with ordinary nails. But pay attention also to the problem that often occurs with wooden greenhouses: the film is attached to the frame with glazing beads or slats, and over time the wood dries out greatly and the film, held in place only by nails, breaks off. This can be prevented by screwing the film onto the glazing bead itself, or, even better, by securing it with a construction stapler and packing tape. This should be done like this: press the tape to the film, and shoot with staples at a distance of 10 cm. Take the staples at 6-10 cm. But a durable reinforced film is attached well with a furniture stapler - take note.

Yes, one more thing: the film should not be pulled too tightly, but it should not have free movement either - otherwise the wind will simply wear it out. Even with a slight wind, the sagging film is constantly exposed to mechanical stress. To prevent this from happening, use a Z-shaped stretch with propylene cord in 1 m increments over the film. The film can also be additionally secured with rope or rubber bands - this is what you already have at hand.

What problems can bother you and how to solve them?

Some people still solve the above problem of moisture from film quite successfully. Here's how everything can be done: we put a film between the posts - especially for water drainage. You can use old drip tape for this. Just leave 7-10 cm unfinished to the end - so that warm air, which rises upward, entered this span, cooled from the upper film, the steam turned into water and, dripping onto the lower film, flowed down.

There is another problem that quite annoys all owners of greenhouses with a metal structure - the metal rubs the film. It breaks and quickly becomes completely unusable. This can be solved effectively in two ways: wrap the frame in such places with fabric, which is not very aesthetically pleasing, of course, or cover them with tape. By the way, on PVC frame There are usually no such problems.

The third problem: heating. If iron frame If you paint it with light paint, the metal itself will heat up less and heat up the film. But keep in mind that the paint will scratch it even more. The second option is to put rubber on the frame and paint it in White color so that it heats up less. Plastic pipes, hose pipes and bicycle tires also cope well with this problem. All white-painted parts already heat up in the sun exactly half as much!

And finally, when stretching the film over the frame, remember one thing: every year it tightens. So, if at first you purchased 6 m, then after two years you will notice that the length of the coating is already exactly 5.90, and in this arithmetic progression this process will continue. And if you stretch it on the frame, then it will simply tighten more and more. Therefore, never pull it too hard, especially if you keep the film until the coldest weather.

We are building a budget version of the “film” design

A wooden frame is ideal for the film - it does not heat up, and therefore does not heat it either. But today such greenhouses are successfully built from other materials.

Option #1 – arched greenhouse under film

Let's move straight to the order of work:

Step 1. Let's make the foundation. To do this, we attach anchors to the vertical arches and dig them into the ground. These are 40-centimeter sections of pipe, to the end of which a tee is welded. It just keeps the greenhouse from wind loads. And to the other end we weld a cross, to one of the side exits of which we attach a piece of pipe 80 cm long - which is equal to the distance between the arches, and for covering with film there is no longer any need to do it. After this, we finally weld the entire structure in one line.
Step 2. We install a greenhouse. To do this, we dig a groove and place the lower trim horizontally in it. Having dug in, we weld the arches - to do this, we weld a 5.5 m piece of pipe vertically into the cross, and the second end of the pipe to the opposite side of the trim. It turns out to be an arch.
Step 3. We strengthen it. At this stage, we install longitudinal strength elements - these are boards 10 cm wide and 25 mm thick. All wooden parts Before installation, soak it three times with an antiseptic.
Step 4. We are completing the greenhouse ridge. To do this, you will need help - one person will hold the wooden plank inside the greenhouse, and the other will screw it from the outside through the pipe with self-tapping screws for rigidity. Everything is attached in the same way from the outside - the whole structure is quite rigid and durable.
Step 5. We install windows and doors. They can be made from wooden blocks 50x50 mm. What kind of design they will be depends on what exactly you will grow in the greenhouse and what type of ventilation you need.
Step 6. We process the wood. Bottom beam additionally impregnate the end trim that is in contact with the ground with mining or antiseptic resins from the store so that it does not rot in the ground.
Step 7 Cover the greenhouse with film and cover with earth those remains that are on the ground.

After all this, we worry about how to reduce overheating of the film in those places where it comes into contact with the frame. On hot days, the metal can heat up to +70°C!

Option #2 – mesh frame greenhouse

A durable greenhouse that is ideal for covering with film can be made from ordinary mesh frame. To do this, purchase in the store building materials metal mesh with large cells. Take the one where the wire is thinner and lighter, then it can be easily bent and attached conveniently.

But do everything in advance required dimensions– in such a greenhouse the plants should feel good and free, think about the height of the structure. Also place the mesh on the floor - this is what will hold the entire frame of the greenhouse, and it is thanks to this that your greenhouse will be portable. By the way, take a tougher mesh there.

Make the doors to such a greenhouse the same as to any ordinary one - from slats, boards and bars, or simply cover them with film. And you will add rigidity to the structure with a flexible plastic pipe, the ends of which need to be stuck into the ground.

That's all - all that remains is to cover the greenhouse with durable plastic film. Minimum time, minimum costs, minimum effort - and a lightweight portable greenhouse is ready!

Greenhouses covered with polycarbonate are considered to be the “elite” greenhouses. This polymer material, of course, has its advantages, but the film also has a number of qualities superior to polycarbonate:

it is much cheaper than polymers;
mold does not form on it;
light transmittance is not lost over time;
does not block ultraviolet rays;
Some types of film are as durable as polycarbonate.

Modern film manufacturers try to take into account all fair complaints from users about this material. The consumer is not satisfied with the insufficient resistance of the film to precipitation, the formation of condensate drops on the inner surface, and the sagging of the material due to stretching.

As a result of “working on mistakes”, the following types of film appeared:

stabilized hydrophilic;
unstabilized polyethylene;
heat retaining;
reinforced polyethylene;
copolymer ethylene vinyl acetate;
polyvinyl chloride.

The hydrophilic film allows condensate to drain without the formation of drops. Water does not collect above your head, and most importantly above the plants.

Reinforced film is characterized by increased durability - it can last 7-8 seasons.

Ordinary unstabilized - does not differ in such characteristics. Therefore, if a greenhouse covered with this film provides year-round cultivation harvest, then without gas boiler, to increase CO 2 and reduce humidity is indispensable.

EVA film also has increased strength due to its multi-layer nature. It is impossible to cover the greenhouse with it without an additional 4-5 pairs of assistants’ hands. The greenhouse is covered with a solid heavy canvas. But the sheathing is surprisingly strong and durable and keeps heat well all year round. Fastening such a multilayer film has its own characteristics:

The first layer is attached, as usual, to the top of the frame.
The next one should be at a distance of 7-10 centimeters from the first and located inside the frame.
The last layer is nailed with strips of conveyor belt onto the additional crossbars of the internal posts. The crossbars that are nailed to the posts must be 2 m in the middle and at least 1.20 m at the edges of the greenhouse.

This creates a “thermos” effect indoors. Even in the harshest winter, additional heating of the greenhouse will not be needed. With the arrival of heat, the third layer of film can be dismantled.

Rules for attaching film to a greenhouse

It is very convenient and reliable to cover the greenhouse using a conveyor belt. It is cut into strips of 2-3 centimeters and nailed with ordinary nails.

The film is nailed onto the frame not directly, but through a wooden bead or strip. But if the film on the frame and glazing bead is held in place only by nails, there is a danger that the wood will dry out over time. This will cause the tension to weaken and the coating to sag. You can avoid this by wrapping polymer film around the wooden slats and secure with packing tape. The tape must be pressed against the film and secured with a construction stapler. It is better to use 6-8 cm staples. When working with reinforced film, it is better not to use nails, but to secure it with the staples of a furniture stapler.

It is necessary to choose the correct degree of film tension. Too much tension - it will soon break, too little - it will sag and become deformed. For optimal tension of the film material, you can use a polypropylene cord. In increments of 1 meter, in the letter Z, the cord is attached over the film. Instead of a propylene cord, you can use a rope or a rubber band.

You can avoid the problem of condensation dripping from the film onto the plants by providing unique grooves made of the film for water drainage. It is necessary to place a film between the posts so that a natural drain is formed.

The metal frame of the greenhouse wears through polyethylene very quickly. You can significantly slow down the process by wrapping the frame with fabric in problem areas or covering them with tape. When using a polymer frame, such problems are not observed.

Another disadvantage of a metal structure is that it gets very hot in the sun, and the temperature in the greenhouse rises to undesirable levels. If metal elements paint with light paint, the heating will be less. However, paint will not help prevent the film from rubbing off. To solve both problems together, you can put light-colored plastic pipes on metal racks. Instead of plastic pipes, you can use rubber hoses or bicycle tires. You just need to first paint them white. Light coating metal reduces its heating by half. At the same time, we must not forget that the wooden frame does not heat up and does not wipe the film.

Low-budget version of a homemade greenhouse under film

The simplest and cheap option self-built dacha building– “film” greenhouse of arched design. The sequence of actions for its manufacture is as follows:

Any structure begins with a foundation. Vertical metal sections of pipe, approximately 40 centimeters long, are dug into the ground. A tee is welded to the end lowered into the ground; it will act as an anchor. A crosspiece is welded to the free end. An 80-centimeter piece of pipe is attached to one wing of the cross. The same distance will be later between the arches. The entire structure is welded in detail in line. Its length is equal to the estimated length of the greenhouse.
Greenhouse installation. The lower trim is placed horizontally in a shallow groove and dug in a little. An arched rod is welded into the crosspiece of the foundation pipes (also vertically). A length of 5.5 meters will be sufficient. The second end of the rod is welded to the opposite harness.
Strengthening the structure. It requires boards 25 mm thick and 10 cm wide. The boards must be treated with an antiseptic. The reinforcement is attached to the frame longitudinally.
Installation of the greenhouse ridge. Two wooden planks screwed with self-tapping screws to each arch along the entire length of the greenhouse. One strip is external, the other is internal.
Greenhouse covering. It is necessary to cover the top of the greenhouse with the selected film and secure it using one of the methods discussed above. The free hanging ends of the film are buried in the ground.
In pre-selected places in the structure, doorways and vents are cut and installed.

More recently, greenhouse craftsmen have discovered another material suitable for constructing a “green house”. This is a regular coarse mesh metal grid. It serves as an excellent frame for a film greenhouse. The wire from which the mesh is made is light and bends well. Today it is actively used for portable structures. If mesh is chosen as the frame material, then the floor of the greenhouse is also made from it. For the floor, you can use a material with smaller but rigid cells.

Films and non-woven fabrics

For better connection For panels, experts recommend using F-shaped and U-shaped profiles. Holes with a diameter of up to 3 mm should be drilled in the lower part of the panel. They will contribute to better water outflow.

Polyethylene film

0,700 8
35 Quite high thermal insulation, which, according to manufacturers, is three times higher than glass. The thermal conductivity of a polycarbonate sheet is 8 mm. higher than glass and comparable to double glazing;

And this is a very worthy option, since glass has such useful characteristics in greenhouse farming as:

You can praise modern greenhouses made of cellular polycarbonate as long and eloquently as you like, put forward arguments in favor of traditional glass or argue in favor of film, but not convince your opponent that you are right. Because everyone decides the question of how to cover a greenhouse, depending on their needs and capabilities. To install polycarbonate, they traditionally use special aluminum fastening systems, profiles and other structures that can be ordered. But many summer residents are perplexed by the question of how exactly to mount polycarbonate - is it really necessary to do without branded thermal washers or is it more rational to use self-tapping screws for corrugated sheets? Should the sheets be laid overlapping or should a special profile be used to connect them? To answer this question, let's look at the coefficient of thermal expansion of polycarbonate - 0.068 mm for every meter per 1 degree. At first glance, this seems insignificant - but with a temperature difference from -20, as in Russia in winter, to +30 in summer, a six-meter polycarbonate sheet will change in size by exactly 34 mm, and this is already quite noticeable. And the self-tapping screw, which is always in place due to the almost complete absence of thermal expansion of the metal, will simply “break” an oval hole in the polycarbonate. At the same time, branded washers with a diameter of more than 30 mm completely seal the holes and are designed for any thermal deformation of the material invisible to the eye. Just pay attention when buying plastic thermal washers that after two years they become too fragile - due to lack of protection from ultraviolet radiation.

When installing a panel wider than one meter, additional fastening should be used along the entire length of the material. In this case, conventional fastening is not enough to avoid straightening the sheet; it can also shift under pressure.

Greenhouses have different configuration and often they differ from each other. Therefore, we do not give advice on specific species, but those that will help get the job done in any design. Now we will give tips on how to cover a greenhouse with polycarbonate and at the same time avoid problems and extend the service life of the structure.

PVC film

Spunbond

All gardeners know what greenhouse lighting is. Light transmittance of double panel

Glass

Resistance to temperature changes and sunlight; Each of the listed materials has a lot of advantages; all of them, to one degree or another, also have disadvantages. We will talk about them in this article.

And finally, polycarbonate has high impact resistance - it can withstand strong hail perfectly and even a thrown stone won’t do much damage to it. That is why the manufacturer generously provides a 10-year guarantee for such covering material. And polycarbonate can be bent, unlike glass - which is why they build such things from it today different designs. A real outlet for landscape designers!

Polycarbonate is a good covering for greenhouses, but it also requires maintenance; this will preserve the properties of the material and extend the service life of the structure.

We will describe how to correctly lay polycarbonate on a greenhouse and technologically perform fastening of all elements.
2,100

Cellular polycarbonate

is 80%

High light transmittance;

Unusual materials for greenhouses have also found their application - in some ways they are similar to foreign awnings, only their properties are slightly different. Becoming more popular day by day nonwovens– Agril, Lutrasil, Thermoselect and others. There are many such brands, and all of them are designed for multifunctional use.

You should not light a fire near the greenhouse. In this case, ignition is unlikely, but melting of the material is possible;
Before doing the work, cover with grout and paint the frame in a light color. Give preference to an anti-corrosion primer. Light painting will prevent additional heating of the bottom of the polycarbonate sheet. When using a dark color, the lower part of the material heats up from contact with the dark part of the metal and partially loses its strength;
1300
1300

Gap between stiffeners in mm.
79
;

Conclusion

Inertness towards chemicals (pesticides, detergents);

The main reason why many summer residents still choose film for constructing greenhouses and greenhouses is its low price, which, however, varies greatly depending on the type of film and its performance characteristics.

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But the closest attention should be paid to their qualities and properties so that it does not turn out that the plants subsequently lack some important light spectra, and the harvest turns out to be meager. In general, modern nonwoven materials retain heat well in a greenhouse and slowly release it at night. But they cannot save seedlings from frost, and like fabric, they can tear and cost a lot. The choice is yours!

The surface should be washed with a soft detergent, or just water. We should not forget about protective layer from ultraviolet rays that cover the panels. When processing, do not use abrasive cleaning agents or aromatic solvents;

Advantages of cellular polycarbonate

When bending the material, take into account the data given in the table. Increased bending puts more stress on the material and can lead to cracks in the outer layer. This may not even happen immediately, but after some time;

800
800 5,7 35
A special coating prevents the penetration of ultraviolet rays. In the greenhouse you can simply sunbathe without any risk of getting sunburned;
Good thermal insulation qualities.
Today, film materials are produced that are intended specifically for agricultural needs and have special properties.

If you nevertheless purchased such material, then during the rains be sure to cover it with ordinary plastic film, and then remove it: this way the non-fabric will last longer.

Should not be used garden tools for removing snow from the surface of the material.

The ribs of the sheet during installation should facilitate the drainage of condensate and precipitation;

This material is quite shock-resistant and will perfectly withstand hail and falling stones;	Making a glass greenhouse from new materials is unprofitable and impractical - for this you will have to build a very durable frame, able to withstand the weight of glass. It itself is expensive and, moreover, does not withstand mechanical loads well and breaks easily.	Thanks modern technologies, plastic film learned to impart those properties that have a positive effect on the microclimate in greenhouses.	But a glass greenhouse will cost you more, and at the same time, the least expensive. Why such a paradox? Because some build it from old discarded wooden windows, which can always be obtained for free due to the massive replacement of them with fashionable metal-plastic bags, while others erect powerful frames on concrete foundations and order covering material from the factory. Sometimes the last option turns out to be comparable in price to a small country house– dashing, isn’t it? But such a greenhouse is truly absolutely environmentally friendly and durable, it is not afraid of any sun rays, tons of snow and severe frosts.
We told you how to properly cover a greenhouse with polycarbonate. If you follow the suggested recommendations when working, the structure will serve you for many years.	When joining elements, use special protective profiles;
			The big advantage of this material is its elasticity. It is possible to give the structure any shape.
In a word, if you are deciding what is the best way to cover a greenhouse, consider other options first.	Unstabilized	Have you decided on the covering material? On our website you will find many detailed photo and video instructions on how to properly build greenhouses from polycarbonate, film and glass, and even the most tricky questions will be answered by our experts. Feel free to get down to business!	The main task for fastening the film is simple - fasten it so that it does not blow away in the wind. But increasingly, summer residents are interested in “safe” methods of fastening, without the need to pierce the film with nails. The article will describe 5 ways to attach the film to a greenhouse without having to pierce the film.
Attention: Today there are designs of arched greenhouses where the joining is done overlapping, without the use of a joining profile. After some time, this will still lead to water leakage, and lensing of ice will occur in the overlapping areas.
Bending radius is minimal		Polycarbonate has many advantages, but it must be installed correctly and selected correctly.	Structurally, this material consists of two sheets transparent plastic, fastened together by stiffening ribs, between which air-filled channels (honeycombs) are formed. Most professional plant growers and amateur gardeners believe that best option, how to cover a greenhouse with polycarbonate, no.
- This is the most common film for a greenhouse, not distinguished by either a high service life or the ability to retain heat well. But its low cost still attracts many gardeners who need simple temporary shelter for plants.	I cover it with agrotex. The greenhouse has a roof made of “cage” film, and agrotex No. 60 is stretched over the frames. I cover cucumbers and greenhouses in general with agrotex No. 30 in arcs. I spread black agrotex on the ground in the borage. I use a lot of agrotex No. 17 “spider web”. I cover cabbage, sometimes onions, carrots so that they sprout better.	In this method, you can use wooden slats (glazing beads for windows are not recommended) with nails or self-tapping screws, or even better, packing tape secured with staples from a construction stapler.	This will stretch and expand the structural elements at the fastening points. Use sealing tape, which will protect the polycarbonate sheets from leaking..

550	700
35	We provide several tables for selecting the right material.		Stabilized hydrophilic	Greenhouse: film roof. walls plastic bottles. - I only grow seedlings. All vegetables are in open ground.		As an option, cut a tape from old linoleum or any other strong material.
When fastening sheets to the frame, you should use special thermal washers or use rubber seals. For fastening, the element has a special type of leg, which corresponds to the length of the sheet. She provides reliable fastening and does not allow damage to the plane of the material, does not push through it;	6000		5000			1800
1050	48-38	Thickness in cm	Indeed, if you compare this material with film and glass, you cannot help but see its obvious advantages.		The film differs favorably from the previous one in that drops of condensation do not form on its surface: moisture does not drip onto the plants, but rolls down the walls. It also blocks infrared radiation, so it retains heat better.	I use cellular polycarbonate.

For many, this is the worst way to cover a greenhouse - because you have to damage the film. Such film does not last long, a couple of seasons at most. It’s fine if you nail down cheap film, but nailing down long-lasting, expensive film for a couple of seasons is stupid, especially if there are safer ways.


				Light transmittance in %	First of all this:		I have only positive impressions.
Although reinforced greenhouse film is not afraid of breakouts from nails.	Make the diameter of the hole for the leg, 1500 1000	600 1700 55	Transparent Strength and durability - such a greenhouse will last without repair for at least 20 years; Reinforced	Warm, no problem. If in the first method the film is attached to the frame of the greenhouse both on the sides and to the roof rafters, in this method the film is attached only to the ends of the greenhouse. How exactly is shown in the photo below. If the film is not reinforced, then it very often breaks on nails (from the wind). This method reduces film damage and the chance of wind tearing the film. by 5-6 mm	6000 6000 6000	2800 35 Bronze	High transparency coupled with the ability to refract and scatter sunlight; film is the strongest and most durable, as it is a three-layer material with an internal cellular frame made of fiberglass, polypropylene or polyethylene low pressure. It is made on the basis of a stabilized film and, depending on the additives, may have increased light-stabilizing, hydrophilic, antistatic, heat-retaining and other properties important for greenhouses. I don’t even take it off for the winter. It's easy to survive snowfall.
How to attach film to a greenhouse made of plastic pipes? You can secure the film to the greenhouse using special clips. Such clamps can be found in the store, their price is not too expensive.	more from the diameter of the pin itself. After this, you should put on a polyurethane ring, which acts as a seal between the sheet and the cap; it does not allow moisture and dust to penetrate into the connection point. Gives the necessary tightness to the fastening. When the screw passes through the thermal washer, it flares the inner cup (this happens in a similar way to lapping valves), this guarantees reliable protection from water leakage through the washer; 3500 3500	2500 The table shows how to properly cover a greenhouse with polycarbonate using physical characteristics cellular polycarbonate. 20	White opal Low weight and easy to process with conventional construction tools; The main disadvantage of these materials, especially cheap ones, is their low heat-retaining properties, rapid wear and tear, and reduced transparency.	The beds with cucumbers and strawberries were covered with spunbond without arcs before flowering and when there was a threat of night frosts, just like that. Effective! But if you were unable to buy clamps, you can make them yourself from the same plastic pipes. The process is not particularly complicated. To do this, you need to cut the tubes and cut off the side part of them. To attach the film to the PVC pipe, you will have to experiment a little with the size of the cutout in the clamp. It is better to grind down the edges of the clips, otherwise they may tear the film. An example of such a PVC greenhouse with snaps is described here. Any material is placed under the metal clips that will prevent metal overheated in the sun from spoiling the film. Some originals secure the film using paper clips. If the frame allows it, then why not. Use special plugs at the fastening points;	1750 1750 1250	It is also necessary to determine the level of load on the racks and the plane of the sheet. This is determined by each owner individually, but this indicator is quite burnt out 0,32 Dairy	Flexibility and ease of installation. For reference. Bubble film retains heat best, but it also has the lowest light transmittance. The greenhouses were covered with reinforced film. It took three years. Then it tore and had to be thrown away.
This fixation system consists of 2 parts - a PVC clip (resistant to UV radiation) and a galvanized (aluminum) profile. I think the principle of its operation is clear - the PPC snaps into the profile along with the film, without any damage to the material. The system is mounted on roofs, side walls and ends.	Distance between polycarbonate mounting points It is allowed to install the length of the sheet at a distance between the supports and permissible load(kg/m2). 6000	0,4 The easiest and fastest way to build arched structures is from it. This creates minimal amount joints, since the walls and roof are made of solid sheet. Polyvinyl chloride is more expensive than polyethylene, but experienced gardeners prefer it. This material is more durable, more elastic and stronger. It does not fall apart when cut or torn, like polyethylene film for a greenhouse, and can be repaired. Its important advantage is low permeability infrared radiation, so it holds heat very well.	Before covering the greenhouses, the film was stitched with threads on a machine into one sheet so that rain and cold did not get into the greenhouse. Another option is double clips for attaching the film to an aluminum profile. Of all the methods for attaching the film to a greenhouse, this is the simplest in terms of installing and dismantling the film. with a thickness of 4 mm	After studying the tables above, you have the opportunity to weigh all the structural parameters and select the material for growing the required crops. Now let's start describing how to properly cover a greenhouse with polycarbonate. 4000 4500	Permissible gap between rafters m 35 82	Attention! The disadvantages include poor antistatic properties - attracting dust, such a coating quickly loses its transparency. In addition, the instructions for its use require taking into account the fact that the film on the greenhouse will need to be tightened periodically, as it stretches and sag. The tunnels were covered with ordinary film or lutrasil, and on top with plastic (when it’s cold).

Most safe way attaching the film to the greenhouse. First, the greenhouse needs to be covered with a film, and a mesh on top of it; the mesh itself is tied to the body. In this case, the film is not damaged in any way, but there is one drawback - you will have to tighten the film more often, especially after rain and if there is no additional fastening.

., must be no less than

What is needed to install cellular polycarbonate

When the structure frame is installed. The jays are placed at the required distance, the material is selected and purchased. You can start installing the sheets.

Preparing panels for installation

Sheet thickness in mm

To make the structure reliable, you need to know how to properly cover the greenhouse with polycarbonate.

Once I experimented - I covered one greenhouse with white agrill. Everything grew well, but in the fall the plants died instantly from cold dew. Unlike the plants in another greenhouse, which was covered with film.

Specifics of fastening and cutting

Almost the same as in the case of greenhouse mesh, but instead of it a polypropylene cord or elastic band is used. Moreover, you need to tie the greenhouse in the form of a Z (between two parallel cords - one diagonally).

after 400-500 mm

Now we will consider all the nuances that will be required when installing the structure.
200 kg/m2
6000

Light transmittance of cellular polycarbonate depending on sheet thickness and color

You will read about this in other materials on the site.

This is a non-woven covering material with a membrane structure. Environmentally friendly, very light and quite durable. It allows not only light to pass through itself, but also water and air, creating a optimal microclimate and protecting plants from direct sunlight.

Greenhouse - roof made of thick film, walls agrill. Tunnels and arcs - filmA rather specific method, so I will describe it in passing. Eyelets are a hole in the film reinforced with a metal or plastic ring. It is not suitable for ordinary film, only for strong film and preferably with the addition of a cuff that will prevent the grommet from breaking through the material. Leaf
Before installing the sheets, they should be properly prepared.
0,7005000 8Also for selection the desired sheet, you should also know the physical capabilities of the material, which will help distribute the load on the structure. 0.6Everyone is guided by their own motives when arranging a shelter for plants. If it is used only for temporary protection against return frosts, film is quite suitable. If you don't have money to buy expensive materials– glass frames will be the way out. Well, those who are seriously involved in growing flowers and vegetables will prefer a good-quality polycarbonate greenhouse. That year, the cucumbers were planted late, they were not covered with anything at all, the harvest turned out to be excellent!If you have your own interesting examples attaching the film to the greenhouse - share with them in the comments.
with a thickness of 6 mm.
This will ensure that the connections are made correctly and will make the work easier.
1,050

Rules for caring for polycarbonate

2500

Name

The video in this article contains visual and useful nuances on this issue.

parnik-teplitsa.ru

6 ways to attach film to a greenhouse

Advice. For greenhouses and greenhouses, spunbond with a density of at least 42 g/m2 should be used.

Lath (option for a wooden frame).

In general, we close it with Lutrosil.

In the late 90s, when the market was actively forming in our country due to unemployment, reinforced film began to be persistently advertised among summer residents. It was praised for its extraordinary strength and especially long term service - up to 6 years. Unlike conventional film, reinforced film is more sun-resistant, dense, and warm. And, as it turned out, this covering material really exceeded all expectations: even today, for the most thrifty owners, it can last as long as 8 years. It is only important to follow some rules: protect the film on the folds where it touches the frame, get rid of sharp corners and do not stretch it too much.

, fastened with a distance of no less

To ensure sealing of the channels, it is necessary to remove protective film from both ends of the sheet by 8-10 cm. This is done to attach perforated, aluminum or sealing tape;

Lath nailed at the ends

Clamps, clips (option for frames made of PVC pipes, fittings)

175 kg/m2

Film fixation system for greenhouse

Cellular polycarbonate sheet

Net

Rope, harness, elastic cord

Glass for the construction of greenhouses today is used even less often than film

Eyelets and elastic cord

The greenhouse is glass, the walls are made of old KAMAZ glass, the roof is ordinary glass, it’s already 30 liters old, we only replace some of the glass on the roof. The greenhouse is made from old doors and the roof in the form of a house is removable and covered with reinforced film, we bring it into the greenhouse for the winter, it has been in service for 4 years.

But simple plastic film is not a thing of the past. Even though it sometimes serves only one season, it is cheap for its owners and copes with its functions quite well. Thus, the ability to transmit light even for a two-layer film is 80%. And some even think that this is bad - it is much better, supposedly, for the material to pass through 100%. In fact, it is not at all better - with too much light, greenhouse plants become too elongated in growth, and the fruits are then not pleasing to the eye. But 80% is enough for the tops to be exactly what they should be. These are the tricky moments, so never throw away the good old traditions and experience - they can come in handy!

BioTeplica.com.ua

Covering material for greenhouses - what is the best way to cover your greenhouse?

Polyethylene film - is it that simple?

600-700 mm

Before installing the tape, the temporary adhesive on the open ends of the sheet should be removed. A sealing tape is glued along the upper edge of the sheet, and perforated tape along the bottom. Both sides of the panel should be treated. It is possible to seal panels using only end profiles;

Cellular polycarbonate is the leader in sales of the modern market

Sheet thickness in mm.

Awning as a shelter: obvious advantages or advertising?

When a person installs a greenhouse, he always thinks about how to cover his building. The harvest largely depends on this. Everyone wants to achieve maximum results in this matter. This article will tell you how to properly cover a greenhouse with polycarbonate. What to look for Special attention. There are many videos on this topic, but it’s better when you have the opportunity to watch it right away if you forgot something, rather than watching the video several times. We have a suitable video on our website if you need it.

. Perhaps the only thing that can motivate a summer resident to do this is the presence large quantity old window frames and the desire to save money.

I always use only agrotex and eat cucumbers already in June

Glass – for the most hardworking gardeners

Why do most summer residents still prefer polycarbonate? It's all about durability - you only need to build such a greenhouse once, and you won't have to think about repairs anymore. All that remains is to grow and enjoy the harvest.

. These dimensions should also be used for vertical fastening;

Vasha-Teplitsa.ru

What do you use to cover greenhouses? (beds with cucumbers) And what do you recommend? Has anyone tried Agropane?

Lyudmila

Attention: With an arched design and both ends located at the bottom, both edges are processed with profile tape.

Stepan Nikolaychuk

SMERSH

1,050
32
4
0,8

Lolok

As a rule, three material options are offered for covering a greenhouse: glass, polycarbonate and film. The film may be suitable for a small greenhouse; glass and polycarbonate remain.

Nina

Cucumbers are better under film = lovers humid air, others under covering material.
Cellular polycarbonate is really much warmer than window glass - even with a thickness of only 8 mm, it retains heat inside the greenhouse twice as well, and a thickness of 16 mm is comparable to triple glazing. For modern greenhouses, cellular polycarbonate is sold - i.e. with a cellular structure. It consists of an upper and lower layer, between which there are stiffening ribs. Sun rays settle on the lower and top sheet, but penetrate inside the greenhouse in different directions - dispersing, which is especially good for the growth of the future crop. Manufacturers of polycarbonate also claim that it blocks “hard” ultraviolet rays - those that have a destructive effect on plants, but completely let through “useful” ones. Therefore, in such greenhouses you can even sunbathe safely, without fear of getting sunburned - this will not happen.
When installing, pay special attention to the mounting side. In order to protect the material during transportation, manufacturers apply a layer of film on both sides of each element, such as in the Orange greenhouse. On one side, the film has a transparent or white color, and on the other, the film is usually blue in color, or a pattern is applied to its surface; this side protects the room from the penetration of ultraviolet rays. Before installation, remove the film light color, that is, from the bottom of the material. The protective part of the film, that is, the top, can be removed after installing the elements; Proper planting of tomatoes in a greenhouse Proper watering of tomatoes in a greenhouse

Valera
How to fix the film on a greenhouse made of arcs so that it doesn’t get torn off by the wind?

Greenhouses are present in almost any garden or summer cottage. Planting plants in the ground closed type makes it possible to obtain a harvest ahead of natural deadlines or to grow a crop that is not entirely adapted to the local climate. A greenhouse made of arches covered with film is the most common and simplest option. After installing the frame, the owner becomes faced with the urgent task of securing the covering material so that it is not torn off by a gust of wind.

How to cover and secure the film on a greenhouse

Tension the material on the frame as follows:

do not cut the rolls in advance;
throw a whole skein through the arc;
pull it so that there is a margin of 20-25 cm on both edges for fastenings;
cut off;
repeat the procedure, covering the gaps in the frame with an overlap;
fold all the strips on a flat surface and glue them with tape;
lay and fix on the structure;
cut out the end parts with a margin and also secure them;
cut out and fit the details of the windows and doors.

Advice. To ensure that the tape holds the parts well, clean and degrease the gluing areas.

Fastening the frame film is an important component of the durability of the arc greenhouse. If the base is made of metal pipe, pieces of plastic pipe or unnecessary hose are put on it. If a profile is used, it can be wrapped in white cloth. This will protect the film from overheating in places of contact with metal.

A popular method of fastening is with a thick fishing line or cord. The thread is fixed in the lower corner on one side of the greenhouse. Then, in a tense state, they are raised in a zigzag from one edge to the other at the top point. A similar procedure is carried out from the inside so that the film is between the stretched fishing line.

Other methods:

For a frame made of plastic pipe, prepare pieces of pipe with a slightly larger diameter.
For reinforcement structures use conventional stationery clips for papers.
The film can simply be nailed to a wooden frame or screwed with self-tapping screws. In order not to damage the coating, it is fixed with overlays made of wood or old linoleum.

Calculate the amount of material. The film is sold in rolls. Knowing their width (standard - 1.5 m), as well as the width and length of the greenhouse arc, you can easily calculate the required length. Don't forget the ends. Please note: the polymer material in a roll can be two-layered.
If your greenhouse will be used from March to late autumn, it is wise to purchase reinforced film. It is stitched with plastic threads and consists of cells, therefore it is more durable and resistant to the weight of snow, water, etc. For other cases, a simpler and cheaper material is suitable.

Advice. Buy the film with an overlap of the required length, so as not to worry about its accidental breaks or damage.

Start laying the film immediately when the frame is installed and secured in the ground. Choose a dry and warm day without strong wind. The film stretched during the cold period will sag after the temperature rises. If you work in the heat, the material may tear the next night.