Insulation Around Wood Stove Pipe

Around the pipe for a woodburning stove.

Insulation around wood stove pipe.

I am reinsulating this wall and i need some advise on how to insulate this. You cannot put fiberglass insulation around wood stove pipe or liners the liners are rated to 2100 deg with proper insulation and as you stated the fiberglass is less than that. I have a fireplace insert in my basement. Wood burning stoves.

The only insulation that should be touching that flue pipe is something that s rated for high temperatures like mineral wool and even then only in accordance to the manufacturer s instructions. Air traveling over the surface of the flue pipe may be required to keep it safe and cool. Most code jurisdictions require the stove pipe be routed through a thimble to provide a safe distance from combustible materials. This is why they sell special insulation for wood liners.

The area around the pipe will be an air heat leak i guess. You worry for good reason. Voids in a chimney flue liner to the full height of the flue is to use vermiculite chips can be bought for insulation purposes or as soil treatment check around for. If the point where your chimney passes through your wall or roof is badly insulated there is a lot of heat passing through that area and into the outdoors.

I was thinking of doing some better framing around it and maybe use rigid foam insulation but i read that building code requires a 2 gap around. At the top i have a plate covering the flue with a cap on top. The stove sits in front of the fireplace and the piping runs through the damper plate opening and up the length of the chimney about 20 feet. Fireplaces emit a comforting glow during cold winter nights but if they are poorly designed they may take more heat out of your house than they put into it.

Rigid insulation increases the outside diameter of the liner pipe by 1 75. Fiberglass insulation normally comes in the form of batts or blankets. Fire bug yes just in the damper area. You should never have insulation in contact with a wood stove flue pipe.

I packed some unfaced fiberglass insulation around the liner just under the plate at the top of the chimney. Sprayed polyurethane foam will start to burn at about 650 degrees fahrenheit which is within the range of a wood stove s chimney temperature. I want to insulate in the void above the woodburner so it will be about 2m above the actual fire. Available in 24 lengths.

Compress the insulation around the rigid liner by hand until the two edges snap and lock together. Piffin aug 06 2007 12 56am 3 look again at the parts a ceiling support has the cieling trim but also a shield that is a larger diameter than the pipe and stands 6 8 up into the insulation space of a typical flat cieling. The pipe comes out of the wall into the garage and up to the roof.