Where is air leaking?
31% - Floors, walls and ceiling
15% - Ducts
14% - Fireplace
13% - Plumbing penetrations
11% - Doors
10% - Windows
4% - Fans and Vents
2% - Electric outlets
5 bullet points to think about.
- Seal all holes in the building envelope with caulk/foam
- Seal around all holes or penetrations going from the living space to the attic or exterior. (If remodeling include the inside wall plates, top plates, electrical openings, plumbing openings, boxes around the windows, attic hatches, HVAC closet, frames around doors)
- Any unsealed penetration is also an invitations for insects and rodents to come in.
- Test it!
- See www.airbarrier.org
Next blog will be on insulation and ventilation.