Hello everyone,
this is about the method our house builder is using to create a waterproof basement. To be honest, I have never heard of this before, and there is very little information available online about it... and what there is mostly relates to commercial or office buildings.
The method is called "fresh concrete composite membrane" (FBVK #waterproof) with double-layer exterior walls 20cm (8 inches) thick.
One step down would be the "WU-basement" with double-layer exterior walls 24cm (9.5 inches), joint flashing. Of course, this option is also cheaper (approx. 3,000 €).
The plan is to set up a home office in the basement. Therefore, we would prefer it to be "properly sealed," ideally without high humidity caused by water-resistant concrete.
A soil report is not available yet!
Are you familiar with the first method? Have you had any experience with it or any opinions?
It would also be interesting to know whether insulation is possible at all if there is a "membrane" facing the soil on the outside.
this is about the method our house builder is using to create a waterproof basement. To be honest, I have never heard of this before, and there is very little information available online about it... and what there is mostly relates to commercial or office buildings.
The method is called "fresh concrete composite membrane" (FBVK #waterproof) with double-layer exterior walls 20cm (8 inches) thick.
One step down would be the "WU-basement" with double-layer exterior walls 24cm (9.5 inches), joint flashing. Of course, this option is also cheaper (approx. 3,000 €).
The plan is to set up a home office in the basement. Therefore, we would prefer it to be "properly sealed," ideally without high humidity caused by water-resistant concrete.
A soil report is not available yet!
Are you familiar with the first method? Have you had any experience with it or any opinions?
It would also be interesting to know whether insulation is possible at all if there is a "membrane" facing the soil on the outside.
The statement unfortunately seems somewhat unfounded… sorry to say it like that. But another user could come along in this forum and claim the exact opposite, which would cancel each other out. For example, I think it is.
A few references are always helpful in cases like this (no links, as they are not allowed):
- Building physics studies from TU Berlin
- Technical bulletins from the Information Center Concrete GmbH in Erkrath
- Publications from the German Committee for Reinforced Concrete
These are just three of many sources that confirm this.
What each person makes of it is up to them. For us, it means we prefer to play it safe. This also applies to potential cracks in the future. We want to enjoy the basement as long as possible and without any worries.
A few references are always helpful in cases like this (no links, as they are not allowed):
- Building physics studies from TU Berlin
- Technical bulletins from the Information Center Concrete GmbH in Erkrath
- Publications from the German Committee for Reinforced Concrete
These are just three of many sources that confirm this.
What each person makes of it is up to them. For us, it means we prefer to play it safe. This also applies to potential cracks in the future. We want to enjoy the basement as long as possible and without any worries.
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