0.5 lb & 2.0 lb
Choose the right spray foam density for your project. Open-cell (0.5 lb) and closed-cell (2.0 lb) options for residential, commercial, and industrial applications.
Why Density Matters
The density of spray foam directly affects its performance, R-value, and suitability for different applications. We help you choose the right option for your specific needs.
Performance Matching
Different densities provide different levels of insulation, air sealing, and structural strength. We match the foam to your project requirements.
R-Value Optimization
Higher density foam provides a higher R-value per inch, allowing you to achieve your thermal performance goals with less material.
Moisture Protection
Closed-cell foam acts as a vapour barrier, while open-cell allows moisture vapor to pass through. Choose based on your moisture management needs.
Sound Control
Open-cell foam excels at sound absorption, making it ideal for interior walls and multi-unit buildings where noise reduction is important.
Structural Reinforcement
Closed-cell foam adds structural strength to walls and roofs, helping to tie building components together and improve overall stability.
Cost-Effective Solutions
Open-cell foam is more affordable while still providing excellent insulation. Closed-cell offers premium performance for demanding applications.
0.5 lb vs 2.0 lb Spray Foam
Compare the key features and applications of each density to determine which is right for your project.
Open-Cell Spray Foam
R-value: ~3.7 per inchLightweight, flexible, and cost-effective. Open-cell foam expands to fill cavities, providing excellent air sealing and sound absorption. Ideal for interior applications where moisture vapor needs to pass through.
- Ideal for interior walls and attics
- Superior sound dampening properties
- More affordable than closed-cell
- Allows moisture vapor to pass through
- Expands to fill irregular spaces
Closed-Cell Spray Foam
R-value: ~6.5 per inchDense, rigid, and moisture-resistant. Closed-cell foam provides maximum thermal performance and structural reinforcement. Acts as a vapour barrier and adds strength to building assemblies.
- Perfect for exterior walls and roofs
- Acts as a vapour barrier
- Highest R-value per inch
- Adds structural strength to assemblies
- Ideal for below-grade applications
Side-by-Side Comparison
Quick reference guide to help you choose the right density for your project.
| Feature | 0.5 lb (Open-Cell) | 2.0 lb (Closed-Cell) |
|---|---|---|
| R-Value per inch | ~3.7 | ~6.5 |
| Vapour Barrier | ✗ No | ✓ Yes |
| Sound Absorption | ✓ Excellent | Moderate |
| Structural Strength | Low | ✓ High |
| Moisture Resistance | Low | ✓ Excellent |
| Cost | ✓ More Affordable | Premium |
| Ideal Applications | Interior walls, attics, soundproofing | Exterior walls, roofs, basements, below-grade |
| Expansion Ratio | ~100:1 | ~30:1 |
Which Density for Your Project?
Choose the right spray foam density based on your application and performance goals.
Attics
0.5 lb for interior, 2.0 lb for roofline
Interior Walls
0.5 lb for soundproofing and insulation
Exterior Walls
2.0 lb for maximum performance
Basements
2.0 lb for moisture protection
Crawl Spaces
2.0 lb for vapour barrier & insulation
Commercial
Both densities depending on application
Industrial Pipeline
2.0 lb for durable protection
Sound Proofing
0.5 lb for maximum sound absorption
Frequently Asked Questions
Quick answers about 0.5 lb and 2.0 lb spray foam.
Get Your Free Quote Today
Tell us about your project and we'll help you find the right density and solution.