How To Seal Attic Fan For Winter

Another way to seal off an attic fan is to use thick plastic and insulation.

How to seal attic fan for winter.

Notch a hole for your wire and spray foam around the bottom and any gaps in the box. Off the shelf products are available but would have cost me more however it would have significantly reduced my time in the attic. Set the grate aside. Checking the seal once a week will ensure continual protection against losing heat through your attic fan.

If you are creative you can also use spray foam to glue your boxes together. In my opinion the best solution would be to build a box out of rigid insulation board that has a hinged lid. Insulation can help reduce this heat exchange keeping your energy bills lower in winter. Remove the grate from the attic fan.

If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening. Measure the height and width of the. A hard wire runs directly from the. Turn off the electricity to attic fan by unplugging or by disconnecting the hard wire from the junction box.

When using plastic make sure the attic fan is properly sealed on all edges. 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.