Insulating A Crawlspace
A crawlspace is an unfinished, accessible area below the first floor of a building. Proper insulation can help protect your living space from outside temperature changes.
There are two types of crawlspaces: vented and unvented. Vented crawl spaces open to the outside, while an unvented crawl spaces is part of the basement.
In a vented crawlspace, the underfloor should be insulated — much aslike it is in ceilings. This may be done before or after the subfloor has been installed. JM ComfortTherm®, Kraft-faced and unfaced insulation are all possible products to use for this application. With Kraft-faced insulation, the facing is generally against the subfloor.
In an unvented crawlspace, you should insulate the perimeter walls.