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What is the best way to insulate my crawl space? I'm on a 6" full slab and have cinder block walls. I live in central NY. right now it is 33 degrees outside and 45 in the crawl space.

Most use either rigid foam or fiberglass bats behind the skirting. Greg

I was thinking of using the foam but how would I attach it to the block?

Liquid Nails? or possibly another type of adhesive in a caulk tube.

There is a product similar to liquid nails called PL300 Foamboard Adhesive. I used it for just this purpose and it has worked well. Should be able to find it at a local home improvement store.

"Northern Star" did it make a difference in the temperature in the crawlspace?
Are there a lot of fumes from the PL300 Foamboard Adhesive?

Not to worry, After sniffing the fumes for a half hour, you won't care!!! You may want to throw a fan down there to keep the air moving. Greg

Ha Ha Greg! PL products are great. The PL foamboard stuff is not low VOC though. It has a VOC content of 280GPL. To give that number some perspective, regular (original) Liquid Nails Heavy Duty is 480GPL and Liquid Nail Heavy Duty Low VOC is 70GPL, Liquid Nails also has a foam board adhesive which is low VOC at 35GPL.

MSDS and Tech sheets for all big name workplace chemicals are available online.

JD

The tube says not to apply it if the temp is below 10 or over 100, so I don't think temp is a big issue. I don't recall the fumes being too bad, but I was using it on a basement foundation, not in an enclosed crawlspace.