Insulation Around Brick Chimney In Attic

Spun fiberglass insulation is like a sponge as far as its ability to collect and hold significant volume of water.

Insulation around brick chimney in attic.

If there is a straight open space accessible from above you might consider polyisocyanurate foam insulation. Both can be added to uninsulated attics or layered over existing material. Fiberglass insulation is commonly used in attics around the chimney stack. Insulating your crawl space walls with at least an r 19 or r 21 will go a long way.

Seal between the chimney and the framing with fireblock foam or caulk to prevent exterior air from coming in and then put 3 of roxul directly against the chimney brick. If the chimney is an older brick one it may be possible to insulate it along the warm side at the same time as the walls of the knee wall spaces. I think i ll either. You will probably have to look somewhere besides the big box stores for this.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. It is an effective barrier to the passage of heat. It may be easier to use rigid foam insulation than. The b vent system requires air space clearance as well as clearance from combustibles.

For diy attic insulation you ve got two choices. You might want to consider a wireless thermostat. The opening around a furnace or water heater lue or chimney can be a major source of warm air moving in the attic. Fiberglass is one of the most commonly used materials for insulating the home.

They make 4 wide blanket sized insulation for this. A 2 inch board has r 13 insulation. Because the pipe gets hot building codes usually require 1 inch of clearance from metal lues 2 inches from masonry chimneys to any combustible material including insulation. In hot climates it prevents heat from outside the house entering reducing the need to use air conditioners.