Hello all building enthusiasts!
I have a house from about 1924 (6x8m 48sqm) with a crawl space that needs to be inspected. Sawdust as insulation with various materials as blind bottom... an old door among other things, but mostly tongue and groove, some of which is rotten. Sawdust has fallen down and is in piles here and there.
Planning to remove all existing blind bottom and sawdust insulation, thinking of replacing beams, some substandard, filling with modern insulation.
I don't want to tear up the floor from above, so I plan to do this from below. There's a decent amount of space to work underneath. Have run some pipes etc.
Problem:
I can get the beams down, there is an entrance from the side in the "wall." But oil-treated boards will be impossible since you barely fit into the hole yourself.
So my idea is to have age-resistant plastic as the blind bottom, which holds insulation in place (wooden battens with even spacing to stabilize) and prevents moisture from coming up.
Would that work or would it be a bad solution?
Anyone have any thoughts?
Regards, Johannes
I have a house from about 1924 (6x8m 48sqm) with a crawl space that needs to be inspected. Sawdust as insulation with various materials as blind bottom... an old door among other things, but mostly tongue and groove, some of which is rotten. Sawdust has fallen down and is in piles here and there.
Planning to remove all existing blind bottom and sawdust insulation, thinking of replacing beams, some substandard, filling with modern insulation.
I don't want to tear up the floor from above, so I plan to do this from below. There's a decent amount of space to work underneath. Have run some pipes etc.
Problem:
I can get the beams down, there is an entrance from the side in the "wall." But oil-treated boards will be impossible since you barely fit into the hole yourself.
So my idea is to have age-resistant plastic as the blind bottom, which holds insulation in place (wooden battens with even spacing to stabilize) and prevents moisture from coming up.
Would that work or would it be a bad solution?
Anyone have any thoughts?
Regards, Johannes
Thank you Jonathan.
Okay, so plastic is not so good. The problem is just that I can't lower the boards without tearing up the subfloor.
I just read that the blind bottom needs to be diffusion-open. Would a stronger wind barrier work, you think? I imagine it's a bit easier to work with than putting in paneling.
Bh Johannes
Okay, so plastic is not so good. The problem is just that I can't lower the boards without tearing up the subfloor.
I just read that the blind bottom needs to be diffusion-open. Would a stronger wind barrier work, you think? I imagine it's a bit easier to work with than putting in paneling.
Bh Johannes
Plastic is really bad; a subfloor should be airtight but diffusion-open. Wind barrier and boards are a classic solution and probably not a bad idea if panels are not an option.
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