My wood burner fireplace insert is leaking cold air into the house (and
sucking out the heated air I'm sure). I know the damper is closing
completely and I think the outside air is coming down between the walls
of the double-wall pipe. I've tried to find insulation to put in the
void to stop the flow but haven't had any luck. Does anyone know if
there is a specially designed insulation for use in such hot
environments? Will regular insulation withstand the heat (minus the
paper)? Your help would be appreciated.

James

I think Rockwool is ok, check a fireplace store.

If nothing else, a small piece of door gasket material for a woodstove
might work in a pinch. If the B-vent pipe is leaking, it might be
something you should think about replacing, since I don't think they're
supposed to do that.

"m Ransley" wrote in message ...
I think Rockwool is ok, check a fireplace store.

I got it at a local lumber yard. I used it around the back of my insert to cut down heatloss from the outside wall of the stove
into the chimney space. This increased the heat output noticeably.

Bob