Foam types
Open-cell and closed-cell spray foam, what density means, and how to read a product data sheet.
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Open Cell Spray Foam Insulation: R-Value, Benefits & Uses
Learn how open cell spray foam insulation works, its R-value, cost, benefits, drawbacks and best applications before choosing insulation for your home.
Read the guide Updated October 19, 2026 -
Closed Cell Spray Foam Insulation: R-Value, Cost & Uses
Closed cell spray foam delivers high R-value per inch and strong air sealing. Compare costs, thickness, moisture control, best uses and drawbacks.
Read the guide Updated October 19, 2026 -
Open Cell vs Closed Cell Spray Foam: Which Is Better?
Open cell vs closed cell spray foam compared: R-value, installed cost, moisture resistance, attic use and which type is right for your home.
Read the guide Updated October 19, 2026 -
2 lb vs 0.5 lb Spray Foam: What's the Difference?
Compare 2 lb vs 0.5 lb spray foam insulation by R-value, moisture control, thickness, cost and application. See which density fits your building.
Read the guide Updated October 19, 2026
More spray foam topics
- Costs & calculator
- Where spray foam goes
- Spray foam vs other insulation
- Problems & safety
- DIY spray foam
- Hiring a contractor
- Codes & technical
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