Air sealing wood-burning fireplace from the crawlspace below

Hi, I'm looking for some advice on air sealing the around the mantle of a fireplace in the crawlspace. Should I just apply spray foam as needed? Any tips would be appreciated. Thanks!

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Hi Blake,

Do you mean around the underside of the hearth?  Are you trying to seal between the inside of the house and the crawlspace?  If so, could I suggest that, instead, you take the approach of creating a conditioned crawlspace?  Martin Holladay just wrote an excellent post on this topic on Green Building Advisor http://www.greenbuildingadvisor.com/blogs/dept/musings/building-unv...

Dave Baerg

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