How to insulate the floor on the ground: an overview of materials, characteristics

Flooring on the ground is a simple and relatively low-cost solution common in private housing construction. Traditionally, it is considered that the floor is cold on the ground, as it lies on the ground. One of the solutions to make the concrete pavement more comfortable is to use a warm water or electric floor, but without thermal insulation, part of the efficiency goes into the ground. To reduce the heat loss of the concrete screed of the first or basement floor, heaters are used, the brief characteristics of which we will consider in the article.

Popular heaters for the floor on the ground

Insulation for the floor on the ground must keep heat well and have high strength in order to withstand the pressure of the concrete screed and further operational loads. Thermal conductivity, density and compressive strength are the main requirements for this type of insulation.

Expanded polystyrene (PPS) is a synthetic heat-insulating material (polystyrene), which has found wide application in construction. Characteristics: density - 15-35 kg / m3; thermal conductivity - 0.036-0.050 W / m * K (coefficient 1.27); moisture absorption no more than 2% by volume; fire hazard class - G3.

Extruded polystyrene foam (EPS) - synthetic material used to insulate the foundation, basement, facade, roof. Simply put, this is the same foam, but obtained at high: temperature and pressure. Characteristics: density - 28-45 kg / m3; thermal conductivity - 0.028-0.033 W / m * K (coefficient 1.27); moisture absorption no more than 0.4% by volume; fire hazard class - G4.

Perlite concrete - lightweight heat-insulating concrete made on the basis of perlite - a filler of low density of volcanic origin. Characteristics: density - 250-500 kg / m3; thermal conductivity - 0.15 W / m * K (coefficient 1.7); moisture absorption - 19-27% by volume (high); fire hazard class - NG (does not burn).

Mineral wool Is a moisture-resistant environmentally friendly heat insulator, created on the basis of mineral raw materials (basalt, slag, glass), used in construction. Characteristics: density - 20-80 kg / m3; thermal conductivity - 0.038-0.047 W / m * K (coefficient 1.4); moisture absorption by volume - 0.09-1.9%; fire hazard class - NG.

Low density aerated concrete grades D150 – D300. Often this building material is also used for thermal insulation of a concrete screed. Its porous structure retains heat well, and the binder, which is cement, gives sufficient strength. Characteristics: density - 150-300 kg / m3; thermal conductivity - 0.072 W / m * K (coefficient 1.6); moisture absorption by weight - 14-20% (high); fire hazard class - NG.

Foam glass - this is foamed glass melt, which is also called cellular glass. This material is environmentally friendly, strong and durable material. Characteristics: density - 100-600 kg / m3; thermal conductivity - 0.04-0.08 W / m * K (coefficient 1.4); moisture absorption - 0.2-0.5% by volume; fire hazard class - NG.

Polyisocyanurate (PIR) Is a modern technologically advanced closed cell polymer with high rigidity. The structure is similar to extruded polystyrene foam, but less flammable. Characteristics: density - 30-40 kg / m3; thermal conductivity - 0.021 W / m * K (coefficient 1); moisture absorption - 1% by volume; fire hazard class - G1-G2.

As a rule, the floor on the ground should be insulated together with the plinth and blind area. Only in this case will the maximum effect be achieved.

What materials can you offer for floor insulation on the ground? Write in the comments!

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