Rugs for Underfloor Heating – What Should You Keep in Mind?

Infrared underfloor heating is becoming an increasingly popular heating system in Polish homes. However, many people are still accustomed to textiles that not only provide additional warmth but also serve to decorate the space. Therefore, they often wonder if rugs for underfloor heating are a good idea and what they should pay special attention to before purchasing them.

A Rug for Underfloor Heating. An Introduction to the Topic

For many people, a rug is an inseparable decoration of a room, and it also makes the space cozier. It is also pleasant to walk barefoot on a soft material. You might think that underfloor heating excludes placing a rug on your floor. Nothing could be further from the truth! This is a common misconception stemming from the belief that nothing can be placed on a floor heated by infrared films, as it would obstruct the flow of heat.

It is true that not every household textile is suitable for this purpose, but fortunately, the market offers rugs for underfloor heating and carpets designed for this type of heating systems that do not negatively affect their efficiency.

If you dream of a rug for underfloor heating, you must first find out what heating system you have in your home before purchasing it.

Thermal Conductivity and Thermal Resistance

Thermal conductivity is one of the fundamental characteristics worth paying attention to. When choosing a rug for underfloor heating, you should opt for materials with a good thermal conductivity coefficient, which allows for effective heat transfer from the floor to the entire room.

It is also worth examining the thermal resistance of the material from which your rug is made. This is a measure that characterizes the ability of textiles to resist heat flow. In other words, it is a parameter that determines how difficult it is for heat to move through a given material. It is expressed in units called kelvins per watt (K/W). The higher the thermal resistance, the harder it will be for energy to penetrate through the material.

Thermal resistance can be an important parameter, especially in the context of thermal insulation. Insulating materials, such as mineral wool or polystyrene, have high thermal resistance, making them effective thermal insulators.

In the case of underfloor heating systems, thermal resistance can be significant when choosing rugs or underlays. Materials with lower resistance conduct heat better, which can affect the efficiency and comfort of underfloor heating. Therefore, it is important that the textiles used in such systems have properties that promote the free flow of heat.

A rug should therefore have low thermal resistance, meaning it minimizes resistance to heat flow. Materials with low thermal resistance are more effective in transferring heat, which is crucial for the efficient operation of your underfloor heating system.

A Rug for Underfloor Heating – What Features Should It Have?

Rugs designed for rooms with infrared underfloor heating should have several essential features to ensure effective and safe use of this type of heating system. Here are some key features.

• Thickness and Fiber Density. Choose rugs with moderate thickness and fiber density. Rugs that are too thick or dense can restrict heat flow, which will reduce the efficiency of underfloor heating.
• Resistance to Deformation. If you want your rug to last for many years, choose one that is resistant to deformation caused by constant heat exposure. The materials should maintain their structure and shape even with regular heating. Therefore, avoid those with low thermal conductivity that may impede heat flow. Remember that a floor heated by infrared films has a maximum temperature of 28 degrees, so choose a rug or carpet that can withstand such conditions without being damaged.
• Stain and Dirt Resistance. The rug should be easy to clean to avoid the accumulation of dust and other contaminants.
• Aesthetics and Style. Of course, choose a rug that matches your aesthetic preferences and fits the interior design.
• Compliance with Standards. Ensure that the rug meets all standards and recommendations from the underfloor heating system manufacturer. Safety of use is crucial.

What Else Should You Consider When Choosing a Rug for Underfloor Heating?

When buying a rug for underfloor heating, you should also pay attention to its technical specifications. Only in this way will you find out if the rug you choose is suitable for underfloor heating.

• Thermal Resistance. To ensure that the rug does not retain heat from infrared heating films, it should have a resistance of less than 0.17 K/W (kelvin/watt). In the case of a heating mat under the rug or heating film under the rug, it is also important to choose the appropriate thickness so that it does not restrict heat flow.
• Pile Weight. Pile weight refers to the mass of fibers used to weave the rug per unit area. This means how many grams of material (pile) are present on one square meter of surface. This is an important parameter that affects the properties of the rug, including its durability, appearance, and ability to conduct heat in the context of underfloor heating.
• A Rug for Underfloor Heating should be marked with a special symbol – a pictogram. This symbol usually depicts a white heating spiral on a black background, with black arrows pointing upwards on a white background. This logo guarantees that the carpet or rug is safe for underfloor heating.

What Materials to Avoid?

A heating mat under the rug or heating film under the rug are systems that do not get along with felt underlays, as they are too thick to conduct heat properly. The material most commonly used for rugs for underfloor heating is synthetic jute.

Carpet for Underfloor Heating – What Is Worth Knowing?

People who are seriously considering investing in infrared underfloor heating often ask about the issue of laying carpet on the floor. It is worth considering whether to use leveling underlays with appropriate certifications. These materials increase the softness of the substrate but may also affect the efficiency of underfloor heating. The thinner the layer separating the carpet from the heating system, the more effectively the carpet for underfloor heating conducts heat. It is important to remember that carpet should only be glued using certified adhesives suitable for underfloor heating. This way, your heated floor will be effective and safe for all household members.

Rug and Underfloor Heating – Choose Wisely and Enjoy Comfort!

Choosing the right rug for underfloor heating is a crucial step in ensuring the efficiency and comfort of using this type of heating system. Thermal conductivity, thermal resistance, fiber thickness, rug material, and underlay are aspects that deserve special attention.

Also, remember to consult an expert to tailor your rug choice to the specific conditions of your underfloor heating installation. Before purchasing, consult not only with the manufacturer but also reach out to experts from Termofol, who can advise you on which rug is best suited for infrared underfloor heating.

A rug for underfloor heating can be not only a decorative element but also a practical one that enhances the efficiency of the heating system. Choose wisely and enjoy warmth and comfort in your home.