J
Jan Hieber7 May 2026 14:33Hello!
I live in a house built in 1976 with a concrete basement.
The basement exterior is coated with tar/bitumen, has no dimpled membrane, but the roof overhang is large.
Therefore: it is not damp, but probably not completely dry either.
I want to make a room habitable and am looking for an ecological floor structure on the bare floor.
Should it be airtight or breathable?
Organic materials or better not?
Unfortunately, there are very contradictory recommendations when researching this.
My idea:
This is probably not the most ecological solution with the fermacell boards, but it is simple and I can do it myself.
I live in a house built in 1976 with a concrete basement.
The basement exterior is coated with tar/bitumen, has no dimpled membrane, but the roof overhang is large.
Therefore: it is not damp, but probably not completely dry either.
I want to make a room habitable and am looking for an ecological floor structure on the bare floor.
Should it be airtight or breathable?
Organic materials or better not?
Unfortunately, there are very contradictory recommendations when researching this.
My idea:
- Sand / perlite for leveling
- PE foil
- wood fiber insulation boards (compressive strength)
- fermacell screed elements / dry screed
- wood plank parquet
This is probably not the most ecological solution with the fermacell boards, but it is simple and I can do it myself.