Do I need to insulate a house from 300 mm aerated concrete? What kind of insulation to choose so that it is warm and there is no dampness
Aerated concrete Is one of the most popular building materials. It contains cement, quartz sand, lime and a reagent (aluminum powder or paste). The pores of the gas block are 1-3 mm in size.
Due to its porous structure, the material has high thermal insulation performance. Some people think that the blocks can be additionally not insulated. However, it all depends on the thickness of the masonry. This issue must be resolved even before the start of construction.
How not to overpay and at the same time not face problems in the further operation of a house made of aerated concrete?
There is scheme, which says how thick the walls should be, so that there is no heat loss in the house. Various materials are indicated here, among which aerated concrete:
At the same time, do not forget about the fact that when wet, the gas block loses its ability to retain heat.
Therefore, it is necessary to protect the block from the outside with facade material (for example, siding).
Do I need to insulate the house from gas blocks 300 mm thick?
If you are building a house in the south, then you do not need to insulate. You can also refuse insulation if it is a storage room.
If you use material thick for building a house 300 mm. and density D400-500, then such a house must be insulated. This does not mean that the house will freeze without insulation. There will simply be big expenses for heating.
The peculiarity of the gas block is such that it has high vapor permeability and inertia. The walls "breathe" and it is comfortable and cozy inside the house.
Given this feature, it is not recommended to use foam or polystyrene as insulation. For those who do not understand what will happen, we explain. Condensation will form between such a heater and the blocks. This will lead to deterioration of the insulation and dampness in the house.
It is also not advised to use ecowool, perlite, penoizol, polyurethane foam for insulation.
The most reliable insulation for a gas block is mineral wool.
Material with high vapor permeability, which is suitable for aerated block. pros: non-flammable, does not absorb moisture, does not deform, environmental friendliness. Good insulation is produced by Technicol, Park, Rockwool.