What affects the price
- Square footagePer-sqft pricing $2-$4 for open-cell, $3-$6 for closed-cell.
- Open vs closed cellClosed-cell R-6.5/inch, vapor barrier built in; open-cell R-3.7/inch, no vapor barrier.
- Application areaRoof deck (cathedralizing the attic) vs attic floor.
What's included
- Spray foam application
- EPA SPF (Spray Polyurethane Foam) certified applicator
- Vapor barrier (closed-cell) or vapor retarder paint (open-cell)
- Curing time and ventilation
When to call
Best on cathedralized attics, knee walls, and difficult-to-reach areas. Confirm EPA SPF cert and proper ventilation during cure.
Related questions
Open-cell or closed-cell spray foam?
Closed-cell for basements, rim joists, and any below-grade application; vapor barrier is built in. Open-cell for above-grade walls and attics where vapor permeance is needed.
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