Insulation Around Brick Chimney In Attic

Insulating your crawl space walls with at least an r 19 or r 21 will go a long way.

Insulation around brick chimney in attic.

In either cse it fills the required open air space around the b vent in the un conditioned attic space. You might want to consider a wireless thermostat. 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. 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. For diy attic insulation you ve got two choices. 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. Fiberglass is one of the most commonly used materials for insulating the home.

It may be easier to use rigid foam insulation than. It is an effective barrier to the passage of heat. In hot climates it prevents heat from outside the house entering reducing the need to use air conditioners. The opening around a furnace or water heater lue or chimney can be a major source of warm air moving in the attic.

If there is a straight open space accessible from above you might consider polyisocyanurate foam insulation. I think i ll either. Loose fill or batt the common term for blanket insulation. They make 4 wide blanket sized insulation for this.

You will probably have to look somewhere besides the big box stores for this. Fiberglass insulation is commonly used in attics around the chimney stack. 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. The b vent system requires air space clearance as well as clearance from combustibles.