Top Ten Air Sealing Opportunities

1. Chimney/gas vent chase Chimneys and gas appliance vent pipes require large clearance to combustible materials like 2×4 framing. Often these chases are open to the attic and surrounding walls or floor joists. Seal them durably with approved materials like sheet metal and fire-rated caulks. 2. Plumbing chase The plumbing chase is often double framed […]


New York