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kp_utah's avatar
kp_utah
Explorer
Sep 19, 2015

Roof feels week - and solar panel screws didn't grab well

I recently finished installing a 2x100W solar panels on my roof. I routed them in parallel to a charge controller. I am really liking the setup. My only concern is the roof. I think the wood under the...
azrving's avatar
azrving
Explorer
Sep 19, 2015
I used 3/16 toggle wing screws with the screw part being stainless. My roof plywood seemed to be 1/4 inch or maybe 3/8 and screws wouldn't hold. Your roof may just seem soft. If the plywood has been wet you may be able to feel it buckling or crunching under the membrane.

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