Sheet Metal Screws vs. Wood Screws
I'm getting ready to mount my solar panels to my 5ver roof. It's 3/8" plywood. I'm planning two screws per bracket and four brackets per panel. I bought stainless steel screws for the mounting and pla...
Forum Discussion
I think most folks end up using pan head sheet metal screws when mounting solar panel brackets.
A good way to get a permanent seal with a fastener is to turn it through Eternabond tape. The tape will enclose the threads and will cover the screw head if driven with a motorized tool.
3/8" plywood is fairly small in dimension so if you can hit a roof rafter, you'll get a lot more holding strength. My 235w module is fastened with two aluminum channel brackets, each having 3-#12 stainless sheet metal screws lagged into the rafters.
A good way to get a permanent seal with a fastener is to turn it through Eternabond tape. The tape will enclose the threads and will cover the screw head if driven with a motorized tool.
3/8" plywood is fairly small in dimension so if you can hit a roof rafter, you'll get a lot more holding strength. My 235w module is fastened with two aluminum channel brackets, each having 3-#12 stainless sheet metal screws lagged into the rafters.
