Insulation Installer how-to
How to Air Seal an Attic
Air sealing matters as much as insulation.
Quick answer
Air sealing matters as much as insulation. In short: find; seal; seal, then complete the remaining steps below.
Step by step
Find leaks.
Seal top plates.
Seal penetrations.
Seal the hatch.
Install baffles.
Then insulate.
Safety reminders for insulation installers
- Wear respirators
- Stay on joists in attics
- Prevent heat stress
- Avoid live wires
Key terms
R-value · Batt · Blown-in · Cellulose · Spray foam · Air sealing: see the full insulation installer glossary.