How to build from wood concrete correctly. Warm seam that you don't need to save on

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The construction season is ahead. And someone will start building a house on their own. Arbolite is becoming a fairly popular wall material. At least in our region, houses are often built from it. It is produced by two manufacturers.

I will not say anything bad about this material, except for two points. To live in such a house, it must be plastered immediately and outside. Otherwise it will blow through and even get wet. Second, you need to know how to build from it using the "warm seam" technology. Most builders put wood concrete walls like this:

They put a metal mesh, put a layer of masonry mortar and a block on top. Because the geometry of the blocks is not ideal, then a layer of mortar is applied at least 5 mm. You also need to hide the masonry mesh inside the seam and for better adhesion between the blocks, a thin seam will not work. This is already a totally serious cold bridge in the area of ​​the wall. The thermal performance of the wall is deteriorating.

It happens that the solution is not applied to the entire edge, but in two strips, leaving an air gap in the middle. Yes, it helps to some extent. But the most effective way to break the cold bridge is to use a strip of foamed artificial rubber (insulation strips Ru-Flex, K-Flex, Armaflex, Energoflex, etc.).

The cost of one roll 1 m wide and 30 m long with a thickness of 6 mm is approximately RUB 400 / m2. You need to cut the roll into strips 5 cm wide. From a roll, you get 600 rm. Total: 20 rubles. per linear meter of horizontal masonry, this insulation will add to the cost of the walls. Insulation must be put into the vertical seam as well. To do this, we cut it into segments according to the height of the blocks. This is still about 10 rubles / r.m. We can say that because of the insulation, the block made of wood concrete will add to the cost RUB 30

The masonry metal mesh must be replaced with a fiberglass mesh. It does not play a special role, tk. shrinkage cracks do not form in the wood concrete. And additional reinforcement can be made with longitudinal reinforcement rods.

I did not see that the walls made of wood concrete were insulated. If you make a "warm seam", then you can increase the thermal resistance of the walls. Due to the cost of foamed rubber in rolls, they save on this when laying wood concrete blocks. You can do it differently.

Instead of a roll of insulation, after applying strips of solution, glue foam is applied. The glue-foam seals the seam between the blocks more tightly and will be slightly cheaper by 1 lm. than foam rubber insulation. According to my calculations - more than 5 times. Balloon for 400 rubles. enough for 100 running meters of masonry.

The use of this technique can be seen in this video:

If someone built from wood concrete, did you make a "warm seam"?

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