Adhesive for Aluminum roof to plywood?
My husband and I are rebuilding a camper and are about to get to our roof install. We are doing a seamless aluminum roof which will be going over plywood. We want to avoid using any type of screws as ...
Forum Discussion
As far as the OPs question, aluminum roofing does not need glued down, it is secured via screws around the entire perimeter, the middle floats. In fact it needs to float to allow for expansion and contraction with temperature changes
The reason most manufacturers don't use aluminum is the expansion and contraction, especially on large units. Most leaks are not from the material (whatever it is) failing, but from the sealant around various necessary penetrations failing. Aluminum because of the large amount of expansion/contraction is very hard on the sealant.... It can easily fail in the short warranty periods that RVs typically have... That costs money in warranty claims... And that is why the manufacturers have moved away from it. The flexible roofing most use now have a certain amount of "give" that is beneficial to the sealants, and the do not expand/ contract much.
