Thermal insulation of the bases at construction now practically an axiom. The base - a building basis, and it is subject to rigid influence of external environment as it is underground. Efficiency of thermal insulation depends on the choice of the correct heater. Polyurethane foam (PPU) - one of the easiest and reliable ways.
The reason of universal application of thermal insulation of the base - effect of a frosty pucheniye of soil which causes sag of the base. And it conducts to a house distortion, cracks on walls and to many other problems.
Many builders in fight against a frosty pucheniye of soil still use a sandy pillow. But sand - not panacea. This soil really is not swollen out and partially helps from sag of the base, but he does not solve a frost penetration problem.
Other popular material - the extruded expanded polystyrene (EEP). And the main competitor to it - polyurethane foam (PPU). What it is better?
Thermal insulation of the EDS is a gluing in one or two layers of plates of the EDS to concrete, or fastening by means of "heat-insulating fungi" to the base. Thermal insulation of the base of PPU is a dusting of material on a concrete surface, without any fastenings. Result - a monolithic seamless covering. And this property does polyurethane foam (PPU) is irreplaceable when warming the base in conditions of the water filled soil. What occurs in such situation with expanded polystyrene? Continuous water heat exchange.
- Between plates of an extruded penopolitistirol there are cracks. And it is inevitable.
- The water warmed by the base rises upward along the base and gets for thermal insulation in EDS cracks above
- Cooling down, water moves along EDS plates from soil, forcing out the water going to the base through cracks of plates of the EDS which are below
- Because of cracks in frosts between plates of the EDS ice can be formed
Base thermal insulation polyurethane foam (PPU) is an opportunity to avoid such problems. Plus to everything advantages of warming of the base by and large are concluded by polyurethane foam (PPU) in its heat-insulating characteristics.
Warming the base, you warm the house in advance and save on its heating.