Hi!
Tearing up some floors in the new house which is about 100 years old.
The house has a crawl space; 3 out of 4 floors are wooden, and 1 large floor is made of concrete.
I'm wondering if it's worth tearing up the floor since it looks stable, 20 cm slab, but then there's 5 cm of gullfiber between the concrete slabs? Never seen this before, is it approved or does it collect moisture? Should I tear it up or not? Thanks in advance.
