physical properties of spray foam
Spray Foam Parameters:
  - Density: 2.1 lb/cf
- "K" Factor: .143 BTU/sf
- R-Value: 7.0 per inch
- Compressive Strength: 28.5 psi
- Tensile Strength: 39.7 psi
- Water Vapor Transmission: 44 perms-in
- Class 1 Building Material
    
      - Flame Spread Index: 5
- Smoke Developed Index: 350