In pursuit of ideal cleanliness and protection of shelves from stains, many owners of modern household appliances are thinking about purchasing special protective coatings. A question often arises that seems simple, but requires detailed explanation: which side should I put the mat in the refrigerator? It turns out that the correct positioning of this seemingly insignificant accessory depends on the efficiency of the cooling system, the noise level and even the safety of products.
Improper use of protective materials can lead to disruption of air circulation, which is critical for modern models with the system No Frost. In this article, we will analyze in detail the physical properties of various materials, the nuances of their installation and answer the main questions that arise when you first get acquainted with this element of caring for kitchen appliances.
Physics of the process: why do we need mats at all
The main function of any coating on the refrigerator shelf is to create a barrier between the product and the surface of glass or plastic. When you place a hot pan or simply spill juice, the mat takes the blow. However, many people forget that the shelves in the refrigerator are not just planes, but part of a complex thermodynamic system. Heat transfer occurs constantly, and any obstacles must be taken into account.
The use of mats helps prevent scratches on glass shelves, which over time can become breeding grounds for bacteria. Smooth glass is easier to clean, but microdamages from forks or the bottom of jars accumulate over the years. Specialized materials, such as silicone or polyethylenehave antibacterial properties or can be easily washed with aggressive chemicals without being damaged.
⚠️ Attention: Using dense materials not intended for low temperatures can lead to their cracking and microparticles getting into food. Always check the product labeling.
In addition, mats perform a shock-absorbing function. If you accidentally drop a heavy can, a layer of silicone or foam will soften the impact. This is especially important for refrigerators, where glass shelves often do not have additional stiffening ribs in the center. A correctly selected accessory extends the life not only of shelves, but also of entire products that could otherwise break.
We determine the sides: glossy or matte
The most common type of mats found on sale is made of transparent polymer or silicone and has two different surfaces. One side is usually smooth and glossy, while the other is textured, grooved or matte. A logical question arises: how to correctly orient them in the camera space?
The golden rule is: textured side should always look up, towards the products. This is due to several factors. Firstly, the textured surface creates an air cushion between the bottom of the product and the mat itself, which improves cooling from below. Second, the grooves prevent wet items, such as packaged meats or wet vegetables, from sticking.
The smooth, glossy side is designed to be in contact with the refrigerator shelf. It provides maximum fit and prevents the mat from sliding on the glass when installing heavy objects. If you place such a mat on the contrary, with the smooth side up, the products will slide, and air pockets may form between the mat and the shelf, interfering with heat transfer.
Some models of rugs have special suction cups or a sticky layer around the perimeter. In this case, the side with the fixing elements is always directed towards the shelf. This prevents the mat from bunching up when the refrigerator compartment is actively used. It is important to ensure that the sticky layer is clean, otherwise it will cease to perform its function.
Silicone mats with cells: laying features
Silicon mats with a cellular structure, often called “waffle”, deserve special attention. They are popular due to their ability to collect spilled liquid in the cells, preventing it from spreading all over the shelf. But here, too, there are some nuances regarding which side to lay them on.
Unlike flat films, cellular mats can often have both sides look similar, but one of them has a deeper or more pronounced relief. It is the side with recesses that should look up. This allows you to effectively collect moisture. If you turn such a rug over, the liquid will flow out from under it, negating the whole purpose of its use.
Silicone is an inert and safe material, but it can absorb odors if it sits for a long time next to strong-smelling foods like fish or garlic. Therefore, it is important not only to place the rug correctly, but also to air it regularly. The cellular structure requires more thorough washing, since food particles can get stuck in the recesses.
☑️ Caring for a silicone mat
There is an opinion that silicone mats should be laid with the rough side down for better adhesion. This misconception only applies to baking mats on baking sheets, where it is important that the dough does not stick and the mat itself rests on metal. In a refrigerator, the priority is hygiene and heat removal, so the relief is always directed towards the products.
The influence of mats on the No Frost system
Owners of modern refrigerators with the system No Frost often doubt whether it is worth covering the shelves at all. The system works by constantly circulating cold air. Any coating on the shelf creates additional thermal resistance. If the material is too dense or thick, it can locally disrupt the temperature regime.
The key point here is the material. Thin polymer films or silicone have virtually no effect on thermal conductivity. However, the use of fabric mats, thick felt or multi-layer materials is strictly not recommended. They act as a heat insulator, causing the compressor to work harder to cool the products lying on the “blanket”.
| Type of material | Thermal conductivity | Impact on No Frost | Recommendation |
|---|---|---|---|
| Thin PVC | High | Minimum | Recommended |
| Silicone (2-3 mm) | Medium | Insignificant | Acceptable |
| Impregnated fabric | Low | Significant | Not recommended |
| Foamed polyethylene | Very low | Critical | Prohibited |
It is also important to consider the ventilation holes. In some refrigerator models, holes for air circulation may be located not only on the back wall, but also at the ends of the shelves. The mat should not block these channels. If the mat is too large and curves upward at the edges, it can create air turbulence, which leads to the formation of condensation or ice in unintended places.
⚠️ Attention: If after installing the mats you notice that the food on the lower shelves began to freeze or, conversely, spoil faster, remove the covering. The balance of air circulation in your particular model may be imbalanced.
The myth about shelves “fogging”
There is a myth that rugs cause glass shelves to fog up. In fact, condensation is formed due to the difference in temperature and humidity of the products. The mat, on the contrary, can serve as a buffer, preventing direct contact of the warm product with the cold glass, which reduces local vapor formation.
Hygiene aspects and material safety
The issue of safety of materials in contact with food comes first. Not all rugs sold in hardware stores are labeled “food grade plastic” or “food grade.” Cheap analogues can emit harmful substances, especially when in contact with fatty foods or acids (lemon juice, vinegar).
When choosing a rug, pay attention to the smell. The pungent chemical aroma of “new plastic” should alert you. High-quality silicone or food grade polypropylene should not smell. If you have already bought a rug and it has an odor, you can try to air it out on the balcony for several days, but the guarantee of safety after this will not be one hundred percent.
The porous structure of some rugs can become an ideal habitat for bacteria if they are not washed regularly. Unlike smooth glass shelves, which are easy to wipe, a textured mat requires more careful processing. It is recommended to remove the mats once a week and wash them with a disinfectant.
Particular attention should be paid to the edges of the mats. Over time, they may begin to curl or crack. Moisture and dirt get into these microcracks, which are almost impossible to wash out. Such a deformed accessory becomes a breeding ground for mold. If you notice damage to the structure of the material, it must be replaced immediately.
Alternative solutions and current trends
The market for kitchen accessories is constantly evolving, and classic mats are not the only solution to the problem of cleanliness in the refrigerator. Appliance manufacturers and third-party brands offer various alternatives that may be more convenient to use.
- 🧊 Replaceable glass inserts: Some manufacturers allow you to purchase additional sets of shelves. While one set is washed in the dishwasher, the second is in the refrigerator.
- 💧 Moisture-absorbing substrates: Special mats with an inner layer that absorbs condensation, which is especially important for storing vegetables and fruits.
- 🛡️ Liquid glass: Applying a special hydrophobic coating to the shelf. It does not create a layer, but makes it easier to wash away dirt.
Nevertheless, mats remain the most affordable and universal way of protection. They are suitable for refrigerators of any brand, be it Liebherr, Bosch or budget models. The main thing is to use them correctly and do not forget about regular care.
In conclusion, it is worth noting that there is no ideal solution for everyone. If you value aesthetics and minimalism, it may be better to simply wipe down your shelves more often. But if you have a large family, small children, or often prepare large amounts of food, rugs will become your faithful helpers. Remember that which side to place the mat on is not just a formality, but a condition for its effective operation.
Can silicone mats be washed in the dishwasher?
Yes, most high-quality silicone mats can be washed in the dishwasher. However, you should choose modes with temperatures no higher than 60-70 degrees so that the material does not deform. It is better to place them in the upper compartment, away from the heating element.
How to remove the smell from a rug if it has already been absorbed?
Try soaking the rug in a solution of water with vinegar or soda for several hours. Ventilation in the fresh air during the day is also effective. If the smell persists, it is better to replace the accessory, as it can transmit the aroma to the products.
Does the color of the mat affect the safety of the products?
Color does not have a direct effect on the temperature, but transparent mats are preferable. They allow you to visually monitor the cleanliness of the shelf underneath and notice spills in time. Colored mats can hide dirt.
Do you need to remove the mats when defrosting the refrigerator?
Yes, when completely defrosting and washing the refrigerator, the mats must be removed. They need to be washed separately so that water does not flow between the rug and the shelf, where it can freeze or cause corrosion (if the shelf is metal with a coating).