Originally published: 1/9/2024
JM’s XSPECT™ ISOfoam APF board is a polyiso foam board used primarily for rooftop duct installations. The foil facer on the insulation operates as an excellent vapor-retarder, working in tandem with the closed cell foam to contribute to a tightly sealed system. Now available in a tapered option, XSPECT™ ISOfoam APF board also allows for moisture to naturally run off the duct system and prevent pooling. Additionally, the lightweight foam makes it easy to fabricate and install.
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