Insulation Requirements
https://energycode.pnl.gov/EnergyCodeReqs/
Closed cell (2lb) spray foam = R6.5 per inch
Open cell (0.5 lb) spray foam = R3.5 per inch
Fiberglass batt = R3.5 per inch
Fiberglass loosefill = R3 per inch
Cellulose = R3.8 per inch
Rockwool batt = R4 per inch
Closed cell (2lb) spray foam = R6.5 per inch
Open cell (0.5 lb) spray foam = R3.5 per inch
Fiberglass batt = R3.5 per inch
Fiberglass loosefill = R3 per inch
Cellulose = R3.8 per inch
Rockwool batt = R4 per inch
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