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Old 03-25-09, 12:10 AM   #47
Ryland
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Join Date: Mar 2009
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Daox, if your chimney is not used then you might want to insulate around it and install a plug in the top of it otherwise you will have a cold draft down the center of it and this cold mass inside of your house, even insulating it inside of the attic should keep it warmer, but any sort of plug or cap on the top will help.

As for insulating around a chimney that is in service, there are fire stop foams that you can get to seal the gap, there are also high temp silicons out there, then you are supposed to have a set amount of non combustible around chimneys, 5/8" dry wall often will work for this, cement board, I think polyisocyanate foam with foil facing, fiber glass insulation, even tho with brick chimneys they often have floor joists resting on the brick, useing the chimney as a post, it's still a good idea to keep new flammable material away from it if it's easy.

I almost forgot! if you insulate in 2009 or 2010 keep your receipts for your income taxes! http://www.energystar.gov/index.cfm?...tax_credits#c2

Last edited by Ryland; 03-25-09 at 12:16 AM..
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