Seal Air Leaks First

Seal Air Leaks First

Before you insulate or add insulation to your attic, be sure to seal any air leaks around lighting fixtures in the ceiling below, as well as smoke detectors, bathroom fans, wire holes, pipes and chimney flues. Use spray foam or caulk to seal around wire holes, electrical boxes and plumbing. Chimney and furnace flues require flashing and high-temperature caulk, not foam.