Construction
Spray Foam Calculator
Wall or cavity area plus foam type gives board feet, kits needed, and R-value.
Board feet
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- Total R-value
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- 200 bf kits
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- Approx cost
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FAQ
Closed vs open cell? +
Closed cell is denser, higher R, and a vapor barrier. Open cell is cheaper and sound-dampening.
DIY kits? +
Sold by board foot (1 sq ft x 1 inch thick). A 600 bf kit costs around $1500.