Open/Closed Cell Foam and Radiant Barrier

Ask The Expert – Q & ACategory: Radiant BarrierOpen/Closed Cell Foam and Radiant Barrier
RIMA Expert Staff asked 3 years ago

In new home construction, can a radiant barrier (foil adhered directly to roofing underlayment material) be used in conjunction with Icynene foam insulation? Can the foam be sprayed onto the surface of the foil coated underlayment material?  If yes to the above two questions then, do you recommend closed-cell or open-cell foam?

1 Answers
Best Answer
RIMA Expert Staff answered 3 years ago

The answer is no. If you spray the foam on the foil surface it will destroy the reflectivity of the radiant barrier.