Insulation Around Attic Furnace

Insulation isn t only about keeping heat in.

Insulation around attic furnace.

Most often the attic is sealed by installing spray foam insulation at the roofline thus bringing the attic inside the building enclosure and turning it into conditioned space directly or indirectly. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. High efficiency furnaces aren t usually recommended for an attic. This creates a dam around the flue that prevents insulation from.

Although fiberglass may not burn it can melt contribute to a fire and the speed at which it spreads. Heating cooling a while back i wrote about the incompatibility of putting an atmospheric combustion furnace in a sealed attic. In the average home around 20 to 30 of the heated or cooled air flowing through the ducts is lost to leaks and uninsulated surfaces according to the department of energy. Loose fill or batt the common term for blanket insulation.

For diy attic insulation you ve got two choices. It also keeps the heat out of the home or duct. You can build a small enclosure around the furnace with rigid foam insulation then pick up the insulation on the ceiling inside the enclosure. Spun fiberglass insulation is like a sponge as far as its ability to collect and hold significant volume of water.

Or you may even consider converting your attic to a finished conditioned space that will open up some room in your home too. The b vent system requires air space clearance as well as clearance from combustibles. Both can be added to uninsulated attics or layered over existing material. Wrap the flashing around the flue and staple it to the flashing inside the ceiling joists through the notches on the bottom edge.

If you re really concerned you can also build a small insulated room around your unit to prevent heating and cooling loss. Fiberglass insulation cannot just butt up to the vent pipe touching it. Insulating around a furnace exhaust pipe now that you have safely sealed the air leaks around the furnace exhaust you can work on insulating your attic space. Most of the issues that furnace might experience in an attic are due to extremely cold weather in this poorly insulated space.

You need insulation even around your ducts no matter where you live. A furnace can suffer from a drop in energy efficiency if it s in an unconditioned space such as an attic.