When it comes to spray foam insulation, contractors must choose between open-cell and closed-cell foam. Both offer unique benefits, but selecting the right one depends on the project’s goals, budget, and environmental conditions.
Open-Cell Spray Foam
- More Flexible & Breathable: Expands to fill larger spaces, making it ideal for soundproofing and tight areas.
- Lower Density: Allows some moisture vapor to pass through, which can help in humid climates where controlled permeability is beneficial.
- Cost-Effective: Less expensive than closed-cell foam, making it a good option for projects with budget constraints.
- Best Used For: Interior walls, soundproofing, residential insulation, and applications where a vapor barrier is not required.
Closed-Cell Spray Foam
- Higher R-Value per Inch: Offers superior insulation performance, making it highly energy efficient.
- Moisture & Vapor Barrier: Completely blocks water penetration, making it ideal for moisture-prone areas like basements and crawl spaces.
- More Rigid & Durable: Adds structural strength, reducing air leaks and providing long-term durability.
- Best Used For: Exterior walls, roofs, commercial applications, and areas prone to high humidity or water exposure.
Which One Should You Choose?
- For energy efficiency: Closed-cell provides a better seal.
- For affordability: Open-cell is a budget-friendly option.
- For moisture-prone areas: Closed-cell is the best choice.
- For soundproofing: Open-cell is superior.