And for even greater effectiveness, you might consider installing an attic fan, as well ... of the vent hole and install 1 x 3 or 1 x 4 boards around the hole to act as a flat mounting surface ...

Sheets of foam board can be cut to fit tightly between wall studs or attic ceiling joists. Because they are not as effective at insulating, foam boards are not as popular as blanket insulation.

Heated and moisture-laden air use these pathways as conduits to the attic. Check for gaps around any pipes or ducts, chimneys, wiring runs, ceiling lights, loose-fitting attic access doors ...

and electrical industries move safely through an attic space, while preventing ceiling damage and increasing productivity. The boards are constructed from durable, lightweight composites with beveled ...