How To Seal Attic Fan For Winter

This allows plenty of blown in insulation cellulose fiberglass rockwool etc to be installed in the attic without falling into the whole house fan.

How to seal attic fan for winter.

Another way to seal off an attic fan is to use thick plastic and insulation. 1 measure the widest part of the whole house fan working inside the room where the fan is located and not. Turn off the electricity to attic fan by unplugging or by disconnecting the hard wire from the junction box. A hard wire runs directly from the.

When you re done sealing your attic bypasses push the insulation back into place with an old broom handle or stick as you back out of the attic. Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. If you are creative you can also use spray foam to glue your boxes together. Insulation can help reduce this heat exchange keeping your energy bills lower in winter.

Notch a hole for your wire and spray foam around the bottom and any gaps in the box. Checking the seal once a week will ensure continual protection against losing heat through your attic fan. In my opinion the best solution would be to build a box out of rigid insulation board that has a hinged lid. Remove the grate from the attic fan.

How to close an attic vent during the winter. When using plastic make sure the attic fan is properly sealed on all edges. If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening.