While most closed-cell spray foams will be above 6.0 per inch, open-cell is much lower at 3.6 to 3.8 per inch range. Open-cell will expand as soon as its applied, making it the perfect foam for ...

CLOSED-CELL FOAM IS ENGINEERED TO RESIST MOISTURE INTRUSION. In closed-cell foam products, the insulation is manufactured with a blend of acrylonitrile butadiene rubber (NBP) and polyvinyl chloride ...

Closed-cell spray foam; Open-cell spray foam. Possible benefits of spray foam insulation are: It can be applied in difficult-to-reach areas; In some cases, it can provide additional sound proofing; ...