How To Seal Attic Fan

Seal holes in the fan housing with caulk sealing putty or metal tape.

How to seal attic fan. Seal the foil to the frame with the caulk or adhesive and staple or nail it in place if needed. Use canned minimally expanding spray foam daptex plus window door foam sealant 7 for 16 ounces. Tape cardboard around the fan to cover large gaps. One static vent style is the turbine vent which uses wind to power its enclosed fan all it takes is a light breeze to rotate the blades and suck heat out of the attic view example on the home.

Take a look at 4 things you should do as. Seal the exhaust duct to the fan. A hard wire runs directly from the attic fan to the junction box bypassing an. Don t let a hot or cold attic rob your home of comfort.

If you have a finished attic seal behind the kneewalls. Four crucial attic air seals to save energy year after year. Scope using a saw cleanly cut all a hole in the ceiling drywall no more than 1 inch larger in diameter than the fan box. Finished rooms built into attics often have open cavities in the floor framing under the sidewalls or kneewalls.

Find the lighting electrical box for each room and cover it with a dose of spray foam. Stick the spray foam nozzle in the hole with it and give it a quick squirt. You are not trying to shove foam down the wall but rather make an air tight cap on top. Turn off the electricity to attic fan by unplugging or by disconnecting the hard wire from the junction box.

Rafter vents should be placed in your attic ceiling in between the rafters at the point where your attic ceiling meets your attic floor. When you turn the fan on high the house will be pressurized like an inflated balloon. Apply a bead of caulk or adhesive around the opening. Once they are in place you can then place the batts or blankets or blow insulation right out to the very edge of the attic floor.