06/16/2026
We've received a lot of calls lately asking for estimates on spray foam insulation for metal buildings, and one question comes up over and over:
❓ "Should I use open-cell or closed-cell foam?"
For metal buildings, we strongly recommend closed-cell spray foam, and here's why:
✅ Higher R-Value (R-7+ per inch)
✅ Creates an air and v***r barrier
✅ Helps prevent condensation ("sweating")
✅ Resists water absorption
✅ Helps protect against rust and corrosion
✅ Adds structural strength to the building
Metal buildings are especially prone to condensation when warm, humid air comes into contact with cooler metal surfaces. Open-cell foam allows moisture v***r to travel through the insulation and reach the metal, while closed-cell foam creates a continuous barrier directly against the metal to help reduce moisture issues.
Yes, open-cell foam is typically less expensive upfront. However, when insulating a metal building, it's important to consider the long-term performance of the insulation system—not just the initial cost. Investing in the right product from the beginning can help minimize the risk of condensation-related issues and protect your building for years to come.
That's why most properly insulated metal buildings are sprayed with closed-cell foam on the walls and roof.
Whether you're insulating a shop, barn, garage, or commercial building, we'd be happy to discuss your options and provide a free estimate.
📞 386-336-2762
