How to Air Seal a House Like a Passive House Builder
Practical guide to air sealing: DIY materials, airtight membranes, insulation choices, blower-door testing, and vapor-retarder strategies to cut heat loss and moisture.
How to Air Seal a House Like a Passive House Builder Air sealing is a simple yet effective way to cut heating and cooling costs, reduce drafts, and improve indoor comfort. Did you know air leaks can account for 30% or more of your energy bills? By sealing gaps, cracks, and holes in your home’s envelope, you can slash energy waste and even prevent moisture damage. Here’s what you need to know: Key Takeaways: - DIY Fixes: Use caulk for small gaps, weatherstripping for doors/windows, and spray foam for larger areas. - Common Leak Areas: Rim joists, attic hatches, electrical outlets, and plumbing penetrations are often missed. - Materials Matter: Dense-packed cellulose is affordable and eco-friendly, while spray foam provides better air sealing. - Blower Door Tests: Measure airtightness and locate hidden leaks to meet Passive House(https://en.wikipedia.org/wiki/Passivehouse) standards. - Insulation Choices: Combine interior and exterior insulation for better performance, especially in cold...