Going to mount my 4 - 100 watt panels on my roof. Email the manufacture to find the roof truss layout, they said no trusses in the roof just styrofoam with a 1/4" of plywood wood on top and plastic on the inside laminated together. Using the self tapping screws though the 1/4" plywood and dicor worry's me that they will come lose. Thinking of using Plastic Expansion Wall Anchors, that say they hold 149 lbs each. My other thought was you are relaying on the glue that is used to laminate the roof together and will this hold up. I'm wondering on what you think should I be worried about mounting them on the roof and if any ones got any other way to mount them.
Thanks for the help
Thanks for the help