how to install roxul insulation in a crawl space ciling.
I have already encapsulated the crawl space with a 12 mill vapor barrier and also used spray foam in the wall cavities.
but the house wood floors is still feel cold.
We removed the old fiber glass insulation and have not installed anything else yet.
I'd like to put roxul R23, which is 5 1/2" thick.
I live in Maryland and I like to know if I need a vapor barrier in between the floor joists before installing roxul.
Is this a good way to go.
Few other things to check since the floors still feel cold that I am in the process of doing in my home. Check the rim joists, mine were lightly stuffed with smashed up fiberglass. I can't tell you how much air they were letting in. I just sealed with a good sealant and cut to fit foam board (XPS) sealed in place with great stuff foam. Also seal the sill ledge, I had a quarter inch gap in some spots I checked where I can see outside. As you can imagine the air was just gushing in. Also seal up some holes for cable lines, electric, etc... if you have any running down there.
If you don't have a high water table in that area, insulate the crawlspace wall and supply some conditioned air to the crawlspace via a supply side duct.
how to install roxull insulation in a crawl space
Thank you for responding to my post.
My crawl space is as a mention 24'x31' and is around 3 1/2' in height.
I started by removing the old fiber glass insulation on the crawl space ceiling and then replace the 6 mill vapor barrier with a 12 mill from crwal space concept, it is great stuff. I would recomend this to anybody.
The crawl space used to be vented, not anymore, I seal all vents with foam board from the inside and put spray foam around the edge to seal it
Then I used foam it green spray foam insulation on the joists cavities, but I was only able to spray 1" thick because this stuff it is expensive.
My wife did not want me to put fiber glass insulation back in tha crawl space because she thinks that if I do, mice will come back.
Therefore I started doing research and came acrross Roxul insulation, and
I think that once I put this in the crawl space ceiling, the hose floor should feel a little bit warmer.
I will be using R23 roxul, which is about 5 1/2" thick, I call roxul in canada and they told me that I do not need a vapor barrier as long
as long as the crawl space has been encapsulated.
I hope that this helps someone.
Thank you for your input.
Plastic, welcome to the forum!
Sounds like I'm a bit late here.... for others reading; As WW said above- http://publicecodes.citation.com/ico...008_par002.htm
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