After a hot water leak under the crawl space in a cottage from the 1700s with slag as insulation, first there were 4 cm thick boards, then some form of fabric, then slag, and then 2 cm thick floorboards. Hot water sprayed on the floor sill, approximately 100,000 liters. No dehumidification is being done. Pipes are repaired and plastic insulation is placed around pipes. They nail a framework and lay sparse thin boards to hold fiberglass insulation in place, then a chipboard is laid that sags when walking on one side. The foundation is sealed with large stones and plastered gaps. The hole that was made is about 2.5x2.5 meters. Should no moisture barrier or wind paper be installed? They say the sill will dry by itself? Is it necessary to approve chipboard when there was previously a thick wooden floor? We don't use the cottage year-round, so the room remains cold during the winter.
