Carpet thermal insulation performance

2020, October

Written by Lou Ancelin

Thermal losses are the result of the interaction between indoor and outdoor air fluids when they have different temperatures. The more the building loses heat (or cool air), the more energy it consumes.

Why does cold air attract hot air?
The warmer a body is, the more its particles quickly shake and bump into each other. On the contrary, particles of a cold body move little. Thus, when they are in contact, the particles of a hot fluid transmit their energy to the less active particles of the cold fluid. Due to this, hot fluid particles lose speed while those of the cold fluid gain speed. This transfer takes place until the two fluids have reached an equilibrium state, being at the same temperature.

Where can there be heat losses?
Whether it is heating or air conditioning, thermal losses pass through:
- Roofing, for 30%
- Ventilation tube, for 20%
- Exterior walls, for 20%
- Windows, for 15%
- Floors, for 10%
- Thermal bridges, for 5%;

Carpet is an exceptionaly good insulating material
Carpet fibres are natural insulators with low heat conduction values. In addition, carpet surface pile, with its millions of tiny fibres, traps air and further increases its thermal insulation. As can be seen from the table, the thermal resistance of carpet is significantly higher than that of concrete and plywood, two common flooring materials, and similar to fiberglass insulation. In fact the insulation value of carpet can be up to 10 times higher than that of hard floor covering.

 thermal insulation table

*Source : Carpet Institute of Australia Ltd

The thickness of the carpet is an important factor to consider. The thicker the coating is, the more effective its thermal resistance results. In addition, a product with an underlay provides more efficient insulation. All TecSOM collections can be equipped with an acoustic underlayer of recycled fibre felt.

Carpeting reduces the energy bill by up to 10%: a substantial saving for the customer but also for our planet.



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