Henry De Marne

Henry De Marne's Posts

Q&A: Rigid Foam Under Scissors Trusses

Q: We’re considering installing a layer of 1-inch rigid foam insulation on the underside of a cathedral ceiling framed with scissor trusses. Is the foam a vapor barrier, or will we need to install a poly vapor barrier on the interior side of the foam? Will the foam cause problems when it comes time to finish the drywall? Read more

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