The Highest-Performance Foam
Closed-cell spray foam. The gold standard.
When you need maximum R-value, real structural strength, and a built-in moisture barrier in one product, nothing matches closed-cell spray foam. It's the most powerful, most versatile insulation we install across Berkshire County and Western Massachusetts.
R-7
Per Inch
Among the highest of any insulation
Why It Wins
One product, six high-performance jobs
Closed-cell foam is dense, rigid, and fully sealed. That structure is what lets a single application do the work of several materials at once.
Highest R-Value Per Inch
At about R-7 per inch, it delivers the most insulating power in the least space, ideal where depth is limited.
Adds Structural Strength
It bonds to framing and sheathing, and studies show two inches can raise wall panel rigidity by 200 to 300%.
Water & Moisture Resistant
Closed-cell foam is hydrophobic, so it sheds liquid water instead of soaking it up like other insulation.
Built-In Vapor Barrier
At about 1.5 to 2 inches it acts as a Class II vapor retarder, controlling moisture without a separate barrier.
Handles Extreme Temps
A continuous air and thermal seal keeps performance steady through brutal winters and hot summers alike.
Lasts the Life of the Build
Properly installed, it won't sag, settle, or degrade, with a lifespan that runs with your structure itself.
Disaster-Durable
A FEMA-approved flood-resistant material
This is what truly sets closed-cell apart. The Federal Emergency Management Agency classifies closed-cell spray foam as a flood-damage-resistant material, because it won't deteriorate in flood conditions the way other insulation does.
In flood-prone areas, it's the one insulation type that can be washed and sanitized after a flood event rather than torn out and replaced, protecting your investment when it matters most.
Best Uses
Where closed-cell is the right call
Its strength and moisture resistance make it the preferred choice anywhere performance and durability matter most.