ᐅ Base area of Ytong walls

Hello,

I spoke with a specialist who said that the base area of an aerated concrete house must be constructed differently to prevent future moisture damage. He recommended using sand-lime bricks for the base area. According to him, placing aerated concrete blocks directly on the foundation slab is a no-go. He suggests building the base area with sand-lime bricks.

1. Question for the experts: Do you agree with his view, and if so, why?
2. Question for the experts: How can this be implemented in a design without external insulation? As far as I know, sand-lime bricks require insulation.

Best regards

Hello,

Vit84 schrieb:
Hello,

I spoke with a professional who said that the base area of an aerated concrete house must be constructed differently to avoid moisture damage later on. He suggested using calcium silicate bricks for the base. In his opinion, placing aerated concrete blocks directly on the foundation slab is a no-go. He recommends the base be made of calcium silicate bricks.

1. Question to the experts: do you agree with his opinion, and if so, why?
2. Question to the experts: how can this be done with a construction method without external insulation? As far as I know, calcium silicate bricks require insulation.

I would say your "professional" is not thinking clearly or perhaps has his priorities mixed up. He’s probably one of those who also believes that meat dissolves if soaked in cola.

I have had many houses built entirely from aerated concrete and have never encountered moisture problems in the base area. As long as the first row of blocks is installed properly, there is absolutely no issue. Your "professional" likely just wants to sell you calcium silicate masonry.

Best regards, Bauexperte