Has anyone ever done it? Every year I say I’m going to do it and I don’t, is this a job that is easily done or would you really recommend hiring it out?
I'd like to hear people's thoughts on this. I know if you want to do it right you need to insulate the perimeter wall, not just change the batts in the floor joists.
Does your Crawl Space have a cement floor ?? or a vinyl vapor barrier ??
What height will you be working in ?? 24 to 36 inches -- you might be working on your back. A mechanic's creeper would be better than knee pads. Get yourself a breathing mask too.
You need a good vapor barrier on the floor that runs up the foundation wall. Then 2" rigid foil-faced boards (polyisocyanurate) on the interior of the foundation. Then either spray foam along the rim joist or maybe Roxul batts.
Use Rockwool (mineral wool) insted of fiberglass Â
I just insulated the floor under my closed in deck. It was a 3 season room and I recently had heat added. The floor was the only area not insulated well, it was freezing cold. I found that the fiberglass insulation wasn’t secured and was sagging down. If there are gaps between the insulation and bottom of the floor it’s pretty much useless.
I didn’t want to do this myself. I’m not very handy and don’t have a lot of free time but the price quotes to have someone do it was ridicules. The rockwool insulation is easy to work with and stays firmly in place. I added wire insulation supports anyway just to make sure. There is about 3 ½ feet of clearance. The insulation itself was quick and easy. The biggest pain was taking off the plywood and putting it back.
It's a bit of work to do it right.
What height will you be working in ?? 24 to 36 inches -- you might be working on your back. A mechanic's creeper would be better than knee pads. Get yourself a breathing mask too.
I didn’t want to do this myself. I’m not very handy and don’t have a lot of free time but the price quotes to have someone do it was ridicules. The rockwool insulation is easy to work with and stays firmly in place. I added wire insulation supports anyway just to make sure. There is about 3 ½ feet of clearance. The insulation itself was quick and easy. The biggest pain was taking off the plywood and putting it back.