How To Insulate Furnace Pipe In Attic

Cut 1 inch deep slots a few inches apart along the top side.

How to insulate furnace pipe in attic.

If you don t have a crawl space or a basement then it can be a challenge to place a furnace on the ground floor of the structure. Make sure the fill s depth is uniform across the attic. Owens corning 762 202 views. To vent or not to vent duration.

A furnace in the attic is a design that works for all homes. Cut enough aluminum flashing from the roll to wrap around the vent pipe with an extra 6 inches to spare. This will stop the air from getting a free ride along the chase and heating your attic. Fasten blocking around the hatch or door to allow the material to be installed around this area without escaping.

Now cut 2 inch deep slots. This will allow you to slip the insulation over the pipe corner easily. For corner joints that need to be insulated cut a simulated miter joint by cutting the insulation at a 45 degree angle. Unwrap the flashing from the vent pipe so you can work with it.

Cut two flat sheets of aluminum flashing that are 14 inches long and narrow enough to fit between the ceiling joists around the flue. You might not receive the same air movement benefits if the unit is in a garage either. Take 2 pieces and cut a c in both. Free range people 32 792 views.

Based on the volume of the attic it may per code and the math be adequate and especially with all the attic floor penetrations on a typical retrofit. And don t we have 50 gallon gas water heaters gas stoves and sometimes even furnaces in conditioned space quite often and code allows this per their mathematical required volume of air needed. Bend these newly cut tabs in. To make it easy to eyeball how level the material is as you blow it in screw depth guides to joists throughout the space.

Measure the circumference of the flue. Continue this process over the entire length of piping in your attic. Then use fire rated caulk to seal the gap btw the sheet metal and flue and then the sheet metal to the attic floor. Open the insulation piece at the slit and slide it over the pipe.

Super insulating our attic part 2 duration. How to insulate a metal flue pipe.