Insulation Around Brick Chimney In Attic

Both can be added to uninsulated attics or layered over existing material.

Insulation around brick chimney in attic.

It is an effective barrier to the passage of heat. The b vent system requires air space clearance as well as clearance from combustibles. If there is a straight open space accessible from above you might consider polyisocyanurate foam insulation. Fiberglass is one of the most commonly used materials for insulating the home.

Fiberglass insulation is commonly used in attics around the chimney stack. They make 4 wide blanket sized insulation for this. In hot climates it prevents heat from outside the house entering reducing the need to use air conditioners. Spun fiberglass insulation is like a sponge as far as its ability to collect and hold significant volume of water.

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. 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. A 2 inch board has r 13 insulation.

I think i ll either. Loose fill or batt the common term for blanket insulation. Insulating your crawl space walls with at least an r 19 or r 21 will go a long way. The opening around a furnace or water heater lue or chimney can be a major source of warm air moving in the 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. You might want to consider a wireless thermostat. 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.