The situation when the internal coating of the refrigeration chamber becomes unusable is familiar to many owners of household appliances. Cracks in plastic, chipped enamel or peeling film not only spoil the aesthetic appearance, but also create ideal conditions for the growth of bacteria. Moisture and food debris accumulate in such places, which inevitably leads to the appearance of a persistent unpleasant odor and mold. These damages cannot be ignored, as they directly affect the hygiene of food storage.
Before you start looking for materials to line the inside of the refrigerator, it is necessary to conduct a thorough diagnosis of the damage. Often, equipment owners mistakenly believe that the only solution is to completely replace the expensive internal casing. However, in most cases, you can get by with local repairs or complete reupholstery with available materials. The key task the choice of a substance that will be safe for food, resistant to low temperatures and easy to sanitize becomes necessary.
Solving the problem requires an integrated approach, including surface preparation, selection of the correct adhesive composition and final sealing seams. Incorrectly selected material can release toxic substances upon contact with food or deteriorate when exposed to cold. In this article we will analyze in detail which solutions are the most effective and which can be harmful to health.
Requirements for materials for interior finishing
The main criterion when choosing a material for interior cladding is its food safety. Any substance used in the chamber must not enter into a chemical reaction with food or release volatile compounds when the temperature changes. Even short-term heating during defrosting should not provoke the release of toxins. That is why the use of industrial plastics or technical fabrics is categorically unacceptable here.
The second most important factor is resistance to moisture and aggressive environments. Changes in humidity regularly occur inside the refrigerator, and detergents may be used when cleaning. The material must be hygienic, that is, have a smooth, non-porous structure that does not absorb odors and fats. Porous surfaces, such as untreated foam or some types of wood, will instantly become a breeding ground for germs.
⚠️ Attention: The use of materials not intended for contact with food (for example, linoleum flooring or technical rubber mats) can lead to poisoning by polymer breakdown products.
Thermal resistance is the third pillar on which the durability of the repair rests. In the freezer, the temperature drops to -18°C and below, and when defrosting it rises to room temperature. The material should not crack, crumble or lose elasticity under these conditions. Acrylic plastics and specialized food polymers cope with this task best, maintaining their properties for years.
Overview of suitable materials for cladding
The most popular and affordable solution for restoration the internal chamber is used food-grade plastic. Sheet polypropylene or acrylic (plexiglass) can be purchased in specialized stores or ordered cut to size. These materials are inert, easy to clean and are not afraid of moisture. Acrylic, in particular, has high transparency and strength, which makes it an excellent substitute for factory coating.
Another option is food-grade stainless steel. This is a premium solution that is often found in professional equipment, but can also be adapted for home use. Steel is absolutely hygienic, not subject to corrosion and can withstand any mechanical stress. However, the installation of steel sheets requires certain skills and special tools for cutting and bending.
- 🥇 Sheet food-grade polypropylene - optimal in price and ease of processing, easy to cut with a knife.
- 🥈 Acrylic glass (plexiglass) - aesthetic appearance, high strength, but requires careful drilling.
- 🥉 Food-grade stainless steel - maximum durability and sterility, difficult installation.
- 🏅 Silicone mats - suitable only for protecting the bottom, but not for completely covering the walls.
There are also ready-made repair kits, including self-adhesive film. It is important to understand that ordinary film will not last long. Specialized materials are required, developed specifically for refrigeration equipment. They are thin, but very tear-resistant. antibacterial coating, designed specifically for refrigeration equipment. They are thin, but very tear-resistant.
Strictly prohibited materials
When trying to save money or use improvised means, craftsmen often make fatal mistakes. It is strictly forbidden to use ordinary linoleum, carpet, plywood, chipboard or MDF for interior cladding. These materials are hygroscopic, they absorb moisture and odors, becoming an ideal environment for the development of mold and bacteria. In addition, wood boards swell when wet and release formaldehyde resins.
Another common mistake is the use of technical plastics and rubber. Materials that are not labeled “food grade” may contain plasticizers and stabilizers, which become volatile at low temperatures or migrate to the surface. Toxic emissions in a closed volume of the refrigeration chamber pose a real threat to the health of all family members.
⚠️ Attention: Never use polyurethane foam to fill voids inside the chamber without subsequent sealing with food-grade plastic. Foam absorbs odors and crumbles over time.
You should also abandon the idea of using fabrics, even synthetic ones. The fabric base will inevitably accumulate condensation, which in cold conditions will turn into an ice crust or become a breeding ground for microorganisms. Velour or other fluffy materials, sometimes used in older models, are not applicable in modern repair conditions due to the difficulty of cleaning them.
Surface preparation and dismantling
The quality and durability of the new skin directly depend on how carefully the preparation was carried out. First of all, the refrigerator must be completely defrosted and disconnected from the power supply. All removable elements - shelves, drawers, trays - must be removed. Old damaged coating should be carefully removed. If it is cracked plastic, you can pry it off with a spatula and remove it.
After dismantling the old layers, the surface must be degreased and disinfected. A solution of baking soda or special products for cleaning refrigerators are ideal for this. Primer in the classical sense it is not used here, but the surface must be perfectly clean and dry. Any remnants of old glue or dirt will cause the new material to lie unevenly or come off.
☑️ Preparation for installation of the casing
If there are deep holes on the walls chips or unevenness, they can be smoothed out using food-grade silicone, allowing it to dry completely. It is important that the final surface is smooth. In some cases, especially when working with metal, light grinding of the surface may be required to improve the adhesion of the adhesive, but this depends on the chosen fastening method.
Interior cladding installation technology
The process of installing a new coating requires precision and accuracy. If you use sheet plastic, it must first be cut to the size of the inner chamber. To cut acrylic or polypropylene, you can use a jigsaw with a fine file or a special knife. The edges of the cuts should be processed so that they are not sharp and do not damage products or hands during operation.
The sheets are fastened using a special glue that is safe at low temperatures. Craftsmen often use “liquid nails” labeled as suitable for food containers or frost-resistant silicone sealant. Glue is applied to the back of the plastic and to the surface of the camera. The sheet is pressed tightly and fixed until it sets. For a uniform fit, you can use weights or spacers.
| Work stage | Required tools | Completion time | Important nuances |
|---|---|---|---|
| Cutting material | Jigsaw, tape measure, square | 30-60 min | Leave an allowance of 2-3 mm for expansion |
| Applying glue | Spatula, mounting gun | 15-20 min | Work in a ventilated area |
| Fixing sheets | Weights, masking tape | 2-4 hours | Monitor the absence of air bubbles |
| Sealing the seams | Food grade silicone, spatula | 30 min + drying | The seam must be continuous and smooth |
Particular attention should be paid to corners and joints. It is in these places that moisture most often accumulates. The seams between the sheets of plastic and the body of the refrigerator must be carefully seal it food-grade silicone. This will prevent water from getting between the new layer and the wall of the refrigerator, where a corrosion process or bacterial growth may begin.
How to avoid bubbles when gluing plastic?
To avoid the formation of air bubbles, apply the glue in an even layer and start glue the sheet from one edge, gradually smoothing it with a squeegee or soft cloth towards the opposite edge. If a bubble does appear, you can carefully pierce it with a thin needle and squeeze out the air, pressing the defect site.
Care for an updated refrigerator
After completing the lining work, the refrigerator must be given time for the glue to fully polymerize and any possible odors to erode. It is recommended to leave the doors open for 24 hours. Only after this the chamber can be filled with products. Proper care of the renewed surface will extend its service life and maintain hygiene.
To wash the new coating, use only soft sponges and neutral detergents. Abrasive powders Hard brushes can scratch plastic or acrylic, depriving them of their smoothness and making them vulnerable to contamination. Regular cleaning will prevent the appearance of persistent stains and odors.
Compliance with the temperature regime is also important. Although modern materials are heat-resistant, sudden temperature changes (for example, placing hot pots) can adversely affect the adhesive layer. A careful attitude will allow you to forget about the problem of cracked plastic for many years.
Is it possible to use ordinary epoxy resin to seal cracks?
It is not recommended to use ordinary technical epoxy resin inside the refrigerator. Most formulations do not have food grade certificates and may release harmful substances. Additionally, epoxy is often brittle at low temperatures and can crack. It is better to use specialized repair kits for refrigerators or food-grade silicone.
How long does food-grade silicone dry at low temperatures?
Food-grade silicone polymerizes when exposed to air moisture. At room temperature, the surface film forms in 15-20 minutes, and complete drying takes 24 hours. In the conditions of the refrigeration chamber, the process may take a long time, so it is better to seal the seams with the refrigerator turned on but empty, or allow the sealant to dry completely before turning it on.
Will the lining affect the operation of the refrigerator?
If you use thin sheets of plastic (2-4 mm), this will have virtually no effect on the operation of the unit. However, too thick a layer of insulating material may interfere with heat transfer, and the compressor will have to work harder. It is important not to block the ventilation holes and temperature sensors with a new layer of sheathing.