Spray Foam Insulation Area Calculator

Spray Foam Insulation Area Calculator

Here’s a detailed table covering everything you need to know about Spray Foam Insulation Areas:

Spray Foam Insulation Area Guide

CategoryDetails
Types of Spray Foam1. Open-Cell Foam (Less dense, flexible, good for soundproofing)
2. Closed-Cell Foam (Denser, more rigid, higher R-value per inch)
Common Applications– Attics
– Walls (interior & exterior)
– Basements & Crawlspaces
– Ceilings & Roofs
– Garages & Pole Barns
R-Value (Thermal Resistance)Open-Cell Foam: R-3.5 to R-4 per inch
Closed-Cell Foam: R-6 to R-7 per inch
Thickness Recommendations– Attics: 6-10 inches (open-cell) or 4-6 inches (closed-cell)
– Walls: 3-5 inches
– Basements/Crawlspaces: 2-3 inches
Coverage Estimate– 1 Board Foot = 12″ x 12″ x 1″ thick
– 55-gallon drum covers ~500-600 board feet
CostOpen-Cell: $0.30 – $0.60 per board foot
Closed-Cell: $1.00 – $2.00 per board foot
Pros– High energy efficiency
– Air & moisture barrier
– Reduces noise
– Long lifespan (20+ years)
Cons– Higher upfront cost
– Requires professional installation
– Potential off-gassing during curing
DIY vs. Professional– DIY kits available (for small areas)
– Professionals recommended for large applications or compliance with codes
Environmental Impact– Some foams have low-VOC and eco-friendly options
– Closed-cell foam may contain HFO (low GWP) blowing agents
Safety Precautions– Proper ventilation required
– Wear PPE (gloves, goggles, respirator)
– Allow curing time (24-72 hours) before reoccupying
Building Code Compliance– Fire-rated coatings may be required
– Vapor barriers needed in some climates

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