RV AC Roof Gasket Leaks: Signs, Causes and How to Replace the Seal
Posted by RV AC Guys on 27th Oct 2026
What the roof gasket does
Your rooftop air conditioner sits over a roughly 14 x 14 inch opening in the roof. A thick foam gasket between the unit's base pan and the roof seals that opening, and four mounting bolts from inside the RV pull the unit down to compress it. Over time the foam flattens, dries out or cracks, the seal fails, and rain finds its way in.
Signs your AC gasket is leaking
Water
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