Top Ten Air Sealing Opportunities
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 to accommodate large waste pipes and vent stacks as well as water supply piping. These walls can directly connect the attic to the basement and to sidewalls and tub surrounds. Seal the chase at the top with code approved, durable materials and caulks. (more…)