How safe are roof mounted solar panels
Just wondering if anyone has ever had a solar panel fly off while driving in high winds? Doesn't look like the 2 screws for each of the 4 mounting brackets are secure enough to handle driving down th...
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Filon is a different creature.
In rubber/plywood you have to use screws. Yes, sealant alone is almost enough to hold it to the rubber, but the rubber itself doesn't hold well to plywood, so the whole thing with mounts may fly away with pieces of rubber still attached to the mounts :)
I used screws and sealant just like Fred said. Probably overdid it, with 5 screws where it was ply alone and 4 screws where there was a rafter (2 in rafter and 2 in ply). Locating rafters makes sense, but it's not easy, and sometimes they are not in the right place. Some of my brackets are 4" tall to clear the plumbing vents, and panels are big, 39"x65". Unfinished panel with one leg "floating" (no screws or sealant) stayed through the summer in hurricane Odille, the worst in years, panels ripped off the houses, - mine didn't even budge.
In rubber/plywood you have to use screws. Yes, sealant alone is almost enough to hold it to the rubber, but the rubber itself doesn't hold well to plywood, so the whole thing with mounts may fly away with pieces of rubber still attached to the mounts :)
I used screws and sealant just like Fred said. Probably overdid it, with 5 screws where it was ply alone and 4 screws where there was a rafter (2 in rafter and 2 in ply). Locating rafters makes sense, but it's not easy, and sometimes they are not in the right place. Some of my brackets are 4" tall to clear the plumbing vents, and panels are big, 39"x65". Unfinished panel with one leg "floating" (no screws or sealant) stayed through the summer in hurricane Odille, the worst in years, panels ripped off the houses, - mine didn't even budge.
