Insulation Around Flue Pipe

However the better method for filling 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 best prices.

Insulation around flue pipe.

I am reinsulating this wall and i need some advise on how to insulate this. At least you can keep air from flowing around the pipe. Now you must form an insulation dam to prevent insulation from contacting the flue pipe. Available in 24 lengths.

Apply a thick bead of high temperature caulk the flue on one side. It had about a 5 rise from the furnace to the charred area in the attic. Unless the manufacturer says you can pack insulation around the pipe don t. The pipe comes out of the wall into the garage and up to the roof.

I have added a picture. It was covered with blown in insulation. Because the pipe gets hot building codes usually require 1 inch of clearance from metal flues 2 inches from masonry chimneys to any combustible material including insulation. The gas furnace was in a garage and the flue pipe went up through the above attic.

Probably a less heat loss than a window. Most code jurisdictions require the stove pipe be routed through a thimble to provide a safe distance from combustible materials. In this case the b vent was also dented on the side so i know the airspace around the double wall pipe was compromised. The opening around a furnace or water heater flue or chimney can be a major source of warm air moving in the attic.

As such it can be used to insulate a chimney. Cut enough aluminum flashing from the roll to wrap around the vent pipe with an extra 6 inches to spare. I wouldn t worry much about not having a square foot of insulation here and there. You worry for good reason.

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. You should never have insulation in contact with a wood stove flue pipe. Air traveling over the surface of the flue pipe may be required to keep it safe and cool. Do not use spray foam for any of the joints near a vent pipe.

I have a fireplace insert in my basement. Rigid insulation increases the outside diameter of the liner pipe by 1 75. Fiberglass insulation is naturally fire resistant. Compress the insulation around the rigid liner by hand until the two edges snap and lock together.

Always use fire resistant caulking. This makes it an ideal insulation material for use in areas that experience high temperatures.