How to repair a crack on a cooktop. Formation and elimination of chipping of the hob

11 consequences of renovation in your apartment:
1. You wipe your feet not before entering the apartment, but before leaving it.
2. White cockroaches have appeared in your house.
3. Your cat switched from valerian to drying oil.
4. You turn the cutlets over with a spatula.
5. When you go to the toilet, you forget the original purpose of the visit and begin to closely examine the toilet connection and check for gaps between the tiles.
6. You stroke your beloved with wide, up and down strokes.
7. In turn, your beloved offers you a stepladder instead of her cheek.
8. Wherever you are, the smell of paint follows you everywhere.
9. Finally, you are glad that you have a small apartment.
10. The flowers you give to your loved one smell strongly of acetone.
11. Before you cook spaghetti, you ring it, try to strip the insulation and twist it

Installation hob into the tabletop

In this final article in the series on installing a hob and stove, I will look at aspects related to the countertop, as well as preparing the countertop and hob for installation.

Of course, the most simple option— at the stage of ordering a kitchen, for a small amount, make a hole for the hob by the company, but for this you need to know the dimensions of your equipment. Therefore, it does not always make sense to immediately order a hole in the countertop. A little advice! Do not make holes until you purchase the cooktop. Always make a hole only using the equipment available!

Hob sizes

Although there are certain dimensions, there are also certain tolerances. Let's start with the fact that the minimum width of the hob is 30 cm. The maximum width can be more than one meter. This depends on the manufacturer’s imagination and the location of the burners (for example, not in the form of a square or some other combination, but in one row). Nevertheless, standard length and the width of the four-burner panel is 60x51 cm. But these are the dimensions of the upper part of the panel. The landing hole itself can vary from 57 to 59 cm in length and from 47 to 49 cm in width. The exact size of the mounting hole can always be found in the operating instructions. The maximum error tolerance is also indicated there. Most often, it is allowed to make the hole 1 cm larger in length and width. But keep in mind that if the hob is not attracted to the countertop, it may move due to big size holes. There are panels (for example Bosh) whose fastening mechanism is generally tricky.

Tolerances with this method of fastening are more critical and allow no more than 3 mm on each side. Therefore, before making a hole in the tabletop, carefully read the operating instructions.

I see no point in copying here a selection of tips from the instruction manual. But I’ll briefly go over the most common points that concern each hob.

Installing the hob into the countertop - seal.

As a rule, it comes complete with the panel. If it is not available, then theoretically you can use any thin door or window seal. Thin due to the fact that, on the one hand, the gap between the panel and the tabletop should be minimal so that dirt does not get into this gap, on the other hand, it must ensure a tight fit so that water does not leak inside, under the panel. Do not use under any circumstances double sided tape or sealant, in general, anything that can stick the hob to the countertop. In theory, the panel should work for a long time, in practice, various incidents happen and the panel has to be removed. Removing a glued panel without breaking it is a very difficult task. And re-installation will be difficult, because you will need to remove the old “glue”.

Installing a hob into a countertop - how to cut a hole for the hob

The first step is to make markings with a minimum tolerance. It is very important to maintain a right angle. I usually use the hob itself for this purpose. That is, I draw one line from the near or far edge. I put it on it required sizes, I place the panel along this line and draw two side lines. To avoid scratching the panel, I put some fabric under it. The lines will be strictly perpendicular, then I measure the required value on the two resulting side lines and finish the rectangle. It is very important to pay attention that you do not hit the side walls under the tabletop when marking the hole . Then, as you prefer, use a hacksaw or electric jigsaw a hole is cut out.
To start cutting, you need to drill a hole to enter hacksaw blade. This must be done in the inside of the countertop. The one you will cut out. The photo clearly shows how this is done. Of course, it is more convenient to make the cutout with a jigsaw. Hole in marble countertops or from artificial stone It is advisable to entrust it to specialists. However, you need to remember that the jigsaw pad is metal and can scratch the surface when performing work. To avoid this, you can use
masking tape. Its convenience is that it sticks well to the surface, but does not stick as much as regular tape. You can glue either directly to the marking line or slightly away from it. The main thing is to seal the area that extends beyond the hob, but may fall under the metal pad of the jigsaw.

Installing a hob into a countertop - using silicone

Cutting a hole for the hob (and, in principle, for anything in kitchen countertop) must be treated with sealant. There is absolutely no difference what color the sealant is. In this operation, the most important thing is to properly seal the cut so that moisture does not get into it. Although the countertops are made of moisture-resistant material, they still swell when moisture gets inside. Only the cut itself needs to be sealed. You just have to wait a while (from three hours) for the sealant to dry and you can install the surface.

This is where we can end the article. If I remember something, I'll add it. If you have any questions, ask in the comments. Most important points I'll move it to the article.

WITH Best wishes, I!

Updated 09/24/2017

Hobs, which have now successfully entered the kitchens of housewives, can have different surface. They are made of aluminum, of stainless steel, glass ceramics or covered with enamel. Each of the coatings has its pros and, unfortunately, cons. For example, strength.

If surfaces made of stainless steel and aluminum are not afraid of sharp mechanical impacts, then for enamel and glass ceramics impacts are weakness, breaking this type of hob is as easy as shelling pears.

Causes of chips on the hob, can they be eliminated and how?

There can be one reason for chipping the enamel - a sudden, strong impact on the coating with heavy or sharp objects. For example, a knife or screwdriver fell from a shelf, a sugar bowl fell out of your hands, a plate caused damage on its edge - the enamel would chip. A chip on the enamel surface will not affect the quality of the hob, but the aesthetic appearance will be lost.

To restore the panel to its previous condition, experienced owners advise using special aerosol enamels. Unfortunately, the shelves of hardware stores are not yet pampered with an abundance of high-quality enamels for repairing such a surface; there are such aerosols, after which the damaged area turns black or simply stands out clearly. But German developers have already been able to come to the rescue, and their enamels allow you to tidy up the hob absolutely perfectly.

If the enamel surface, with minor chips or cracks, loses only its attractiveness, then the glass-ceramic hob may lose its safety during operation, or even fail completely (taking into account the place where the damage was caused).

There may be several causes of damage:

• surgical strikes– falling of sharp objects – a knife, screwdriver, bottle opener or other utensils or kitchen utensils, will certainly leave their mark on a smooth surface.
• hitting with large objects will also not go unnoticed.
• grains of sand or other small, sharp objects - by themselves they may not cause much harm, but when the same pan is placed on them, the surface may not withstand it and chipping will occur.
• tearing off stuck dishes– it happens that a pot, frying pan or other utensils are placed on a sticky, uncleaned surface. Under the influence of heat, the dishes can stick so much that you have to tear them off along with a piece of glass ceramics.
• jam or sugar syrup – many users of glass ceramics complain that escaped jam is removed from the surface, only leaving small chips. There is an opinion that microparticles of sugar penetrate glass ceramics by diffusion and when the sugar syrup is removed, chipping occurs from the surface.

To avoid these troubles, you need to carefully read the instructions, it indicates what you should avoid so that the glass-ceramic panel serves for a long time and properly.

However, if trouble has already occurred, there are three ways: change the entire surface, leave everything as is, or correct the damage.

Replacing and installing a built-in hob is the most reliable method, but also the most expensive. Not everyone has the opportunity to immediately buy a new one. Leaving everything as is is fraught with serious troubles - the panel can be dangerous to use after chipping after some time there will be a crack. Repairing the damage is the most economical way. Now there are many companies that can help in such trouble.

If you try to fix the chip yourself, then you need to find a material that would hold the glass ceramics, prevent cracks from occurring, and not deteriorate or spoil appearance the entire panel.

There is no material that would meet these requirements yet. But people have adapted to fixing chips with heat-resistant sealant. Auto sealant (which is used to repair car glass) also helps.

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Sets out the requirements for sealants for assembly and repair kitchen appliances. The advantages of heat-resistant adhesive-sealant Dow Corning Q3-1566 are considered, and recommendations for its use are given.

Kitchen appliances and adjacent furniture are often exposed to water and liquid products, which leads to their deterioration and premature failure. To avoid this during industrial assembly, repair and installation of hobs, ovens, gas and electric stoves Special attention should be given to sealing connections.

The simplest and most technologically advanced way is to use, which must meet the following requirements:

• the ability to glue and seal various materials in any combination;
• heat resistance;
• durability.

The use of sealants made on the basis of organic polymers leads to reduced reliability and a shortened service life of products. Therefore, manufacturers of kitchen appliances recommend using special high-temperature sealants that can work for a long time and have excellent adhesion to various materials.

Special heat-resistant silicone adhesive-sealant satisfies a wide variety of sealing requirements at the stages of assembly, repair or installation of kitchen appliances. Curing at room temperature, it turns into a durable, rubber-like solid with exceptional performance.

Advantages of high temperature sealant:

• has high adhesion to various materials;
• has the consistency of a paste and does not drip when applied;
• hardens at room temperature;
• maintains stability and elasticity in the temperature range from -50 °C to +275 °C with short-term increases up to +350 °C;
• resistant to chemically aggressive substances;
• released in various options packaging – 310 ml, 20 l, 190 kg.

One-component heat-resistant sealant Silicone-based lasts longer than conventional sealants, guaranteeing the quality and durability of kitchen appliances.

They are popular: they have heat indicators, are easy to use, and easy to care for. But often due to severe mechanical damage or prolonged heating, defects such as cracks and scratches occur. The amount of damage can vary - from a barely noticeable crack to cracks that occupy the entire surface area.

Crack on the hob

• lead to malfunctions of the device;
• the filament temperature rises;
• the external data of the equipment is damaged;
• fractures may increase, which will lead to complete destruction of the glass-ceramic layer;
• the stove may miss electricity and hit the person.

Causes of damage to the hob surface

If cracks were found on the hob, then this was preceded by the following factors:

• A sharp, strong touch to the surface of any objects. For example, you may drop a heavy pan, which is a common cause of glass ceramic failure. The fracture will look like a hole in the center where the impact occurred, and branching cracks.
• The stove became very hot due to long work several burners that were working at full capacity. Usually the defect appears with a bang and can spread in different directions.
• It happens when the stove was installed incorrectly, and the powerful voltage supplied to the equipment destroys the hob. The surface begins to crack from the central part, after which the defects diverge, having sharp corners.
• Point damage, for example, a knife falling.
• Tearing off dishes that are stuck. For example, a frying pan or saucepan was placed on a sticky, uncleaned cooking surface. When heated, the dishes become glued and can only be torn off with a piece of glass ceramic.
• Escaped jam and sugar syrup are very difficult to remove from the stove. When heated sugar comes into contact with the surface, it penetrates into the structure of the glass-ceramic material. When cleaning the slab, the surface is damaged and chips appear.

Important! The last two reasons are caused by manufacturing defects and non-compliance with the rules when assembling the model. Common cases are when the surface is mounted very close to the edges, and during the heating process it bursts.

It should be remembered that faulty equipment powered by electricity is dangerous for any use. There are rules where safety must be observed:

• Any cooking on panels that have cracked should be avoided;
• Cleaning products for cooking surfaces must be specially designed;
• It is not recommended to touch metal utensils wet hands, there is a risk of electric shock;
• Do-it-yourself repairs may result in a short circuit.

What to do if damage such as cracks and scratches occurs?

To get rid of such troubles as a large chip or crack, it would be safer to replace the hob with a new one. Leaving everything as is is also not a suitable option, because the integrity of the equipment is compromised, and the chip can turn into a large fracture. Gluing a panel with your own hands is the most economical way. To do this, you will need a material that will maintain the strength of glass ceramics and will not allow cracks to spread further, and will withstand high temperatures.

Step-by-step guide: how to independently seal a cooktop that has a crack or chip.

Tools and materials:

• Silicate glue.
• Silicone.
• Rectangular pieces of glass, approximately 4x9 cm.
• Epoxy resin.
• Rubber spatula.
• The plate is made of aluminum, the size is selected in accordance with the dimensions of the crack.

Work order:

Aluminum plate located under the chip

How to remove scratches from a stove surface

Appliances with glass hob needs to special care. If you do not follow the instructions for using the device, scratches may occur on the stove.

You can remove scratches from the plane in the following ways:

If more serious defects occur, it is better to contact a qualified technician. It is recommended to check the warranty period, if it has not yet expired, you need to take a photo of the damage and call service center:

1. You will need to call a repair specialist to your home to conduct an inspection and make a conclusion whether the surface can be restored.
2. If the warranty period has not yet expired, the surface must be taken for examination, which will determine the cause of the destructive impact.
3. If the defect turns out to be a factory defect, the manufacturer is obliged to replace the glass-ceramic element or the entire stove.
4. When the warranty is no longer valid, you should visit a service center or repair shop.

Updated 09/24/2017

Today, glass-ceramic stoves have begun to replace conventional ones due to many advantages: ease of cleaning, indication of the heat of the tile, and power. There are practically no problems with them, but when strong blows or excessive thermal effects cracks may appear on them.

And while some are lucky and only have a small crack in the corner of the surface, for others the defect may cover the entire cooking area.

Why are such cracks dangerous?

• They can lead to general operational failure;
• Allows excess heat to pass through;
• They spoil the appearance of the slab;
• They can crack even more, leading to complete destruction of the glass;
• Contact with the stove may result in an electric shock.

Why did the hob crack?

So, you have discovered an ugly crack on the surface of the slab. Where could he have come from?

Do not forget that the second two reasons are most likely caused by a manufacturing defect or improper assembly of the slab. It happens that the surface is placed close to the edges of the slab, and when it expands, it begins to burst.

Be that as it may, there is no need to leave everything as is and continue to use the stove without worry. First of all, follow the safety rules:

• Avoid cooking on panels that are cracked;
• Use the correct products to clean the hob;
• Do not touch metal pans with wet hands to avoid electric shock;
• Do not work on the crack yourself;
• Do not attempt to make repairs yourself.

If you have such a defect, you must definitely call a specialist. If the stove's warranty period has not yet expired, then you are relatively lucky, and all is not lost. Take a photo of the crack (just in case), and contact the service center for help:

1. Call a professional to your home - he will be able to conduct an inspection and decide whether the surface can be repaired. By the way, this is precisely why a photo may be useful to you - some experts prefer not to just take words;
2. If the warranty has not yet expired, the surface may be examined to determine the cause of the breakdown;
3. If a manufacturing defect or other reasons beyond your control are discovered, you will either have the glass ceramics replaced, or even replace the stove with a new one (maybe with a small additional payment);
4. Has the warranty period expired? You can contact not the company center, but private companies engaged in equipment repair. Their technicians will also help you identify the source of the defect and get rid of it.

But be prepared for the fact that if the crack appeared due to an impact (i.e., your fault), you will have to fork out for either repairs or new model. It all depends on the specific case. And one more piece of advice: be careful with equipment - safety rules come first!