Insulation Around Brick Chimney In Attic

For diy attic insulation you ve got two choices.

Insulation around brick chimney in attic.

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. Both can be added to uninsulated attics or layered over existing material. I think i ll either. You might want to consider a wireless thermostat.

Loose fill or batt the common term for blanket insulation. Fiberglass insulation is commonly used in attics around the chimney stack. 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.

The opening around a furnace or water heater lue or chimney can be a major source of warm air moving in the attic. Insulating your crawl space walls with at least an r 19 or r 21 will go a long way. A 2 inch board has r 13 insulation. Fiberglass is one of the most commonly used materials for insulating the home.

It may be easier to use rigid foam insulation than. Go with a full aluminum sheath right against the chimney to serve as the air barrier and then fill in behind it with roxul or 2. They make 4 wide blanket sized insulation for this. The b vent system requires air space clearance as well as clearance from combustibles.

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. 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. Spun fiberglass insulation is like a sponge as far as its ability to collect and hold significant volume of water. You will probably have to look somewhere besides the big box stores for this.