External Walls of Foam Concrete Blocks And Their Protection

Wanting to reduce the cost of construction, often use materials that, to put it mildly, are not intended for insulation or facade decoration or are incompatible with each other. As an example, consider the erection of a monolithic frame house with walls of cheap foam and aerated concrete blocks, which are then insulated and trimmed, forgetting that these blocks are not for external use. Using high-strength plaster solutions to finish the outer wall of these blocks, wishing to obtain a good facade, the effect is accurate to the exact opposite. The problem is that such solutions have a low coefficient of vapor permeability, as a result of which water accumulates inside the block and the protective layer exits from the base.

Protecting the walls of foam concrete blocks with facing brick, much attention should be paid to the masonry mortar, which must be on a calcareous basis and also vapor permeable. But here to keep the clutch in the winter, and even with the use of antifreeze additives is strictly prohibited. Salt that is formed inside and on the surface of the masonry also leads to its destruction.

If the insulation and wall finishing are carried out with the help of "wet" processes, using styrofoam as a heater, then here we will have the effect of accumulating moisture inside the wall. On the walls of foam concrete blocks , only mineral wool plates can be used as insulation . And to cover the facades, too, need paints with high vapor permeability, that is, on a silicate, silicone or siloxane basis.

In monolithic slabs, slats are required with a heater, otherwise they will freeze. Do not forget about wind loads, so as not to get the buzz of walls when installing hinged ventilated facades. Close attention is required to calculate the air gap in the installation of hinged facades. If the calculation is incorrect, you can get the effect of a "crying" facade. And, of course, you should not use uncertified materials or systems. Remember who pays twice? Do not be like this character.

Here is a small part of the facade decoration features of monolithic frame houses with walls of foam and aerated concrete blocks, but this part allows you to show how scrupulously you should approach the choice of materials and pay special attention to their compatibility, so that the houses have their assigned time and did not cause Censures and complaints from residents.