Hello!
We are about to start with the crawl space floor in our cottage foundation now, but we are having difficulty deciding which material is best to use as the crawl space floor. We have clad the bearing beams in minerit and on the thick layer of gravel, a plastic sheet will be laid, and then perhaps ground insulation as well.
We have a few leftover minerit boards that we thought about using, but buying it for the whole house would be expensive.
I have heard that moisture can penetrate the crawl space plywood and cause mold growth, even when it's mold-treated, because the board consists of different layers.
Give me your advice and tips, I would be very grateful!
We are about to start with the crawl space floor in our cottage foundation now, but we are having difficulty deciding which material is best to use as the crawl space floor. We have clad the bearing beams in minerit and on the thick layer of gravel, a plastic sheet will be laid, and then perhaps ground insulation as well.
We have a few leftover minerit boards that we thought about using, but buying it for the whole house would be expensive.
I have heard that moisture can penetrate the crawl space plywood and cause mold growth, even when it's mold-treated, because the board consists of different layers.
Give me your advice and tips, I would be very grateful!
I started with asfaboard on the house before the last one. But it tended to sag, like a hammock, under the weight of insulation, and thus left an air gap up to the floorboards. So I switched to construction plywood, which is much stiffer.
This was in 1982, and we sold the house after 16 years. But I haven't heard that it wasn’t good
This was in 1982, and we sold the house after 16 years. But I haven't heard that it wasn’t good
I tore down a mold-damaged storage shed that had tar board as the subfloor. It was laid on half-driven nails but the moisture, I suppose, caused it to bend down so much that it fell down and lay on the ground. Not particularly well-ventilated but not nonexistent either. I couldn't, in good conscience, advise anyone to build like that.
If the asphalt board can't support the insulation, it's been packed too tightly.
It's not surprising that the asphalt board can't handle a poor crawl space. It's important to have a good climate in the crawl space, but that's another problem.
If you don't want to address that, you can advantageously use others mentioned above.
It's not surprising that the asphalt board can't handle a poor crawl space. It's important to have a good climate in the crawl space, but that's another problem.
If you don't want to address that, you can advantageously use others mentioned above.
By the way... old asphalt-based products like asfaboard, vindpapp, etc... there is a reason they have been replaced by modern materials like wind barrier fabric, underlay films, etc.
I once put asphalt paper under a joist... took six months, and it was white with mold. Paper is a treat for mold if it's a little damp.
I once put asphalt paper under a joist... took six months, and it was white with mold. Paper is a treat for mold if it's a little damp.
Trossbottenskiva?