I am trying to install new fireplace doors on my brick fireplace. I want to get the best seal possible, and am stumped at how to fill in the gaps between the bricks where the grout is. I am afraid quite a bit of warm air is escaping through those gaps. Is just stuffing more fiberglass insulation into all the gaps my best option, or is there some other sort of sealant I should be using?
Re: Fireplace Help!!
I would use the chinking cord used to seal glass on the front of wood stoves. Any wood stove supplier should have it. The cord comes in different thicknesses, so choose one that is slightly larger than the gap you're trying to fill.