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 would use Star head or Square head WOOD screws.
And more importantly, screws are a very effective way of channeling water into materials. To protect your roof do what is common on Sailboats and other yachts.
Drill a small pilot hole for the screw and fill it with silicone sealant. Then insert your screw. after the screws are in cover them with more sealant. I would also put sealant under the "feet" or mounting bracket of the panels.
This should seal the threads and under the head and not allow water ingress.
You definitely do not want water getting in to the plywood structure of your roof.
And more importantly, screws are a very effective way of channeling water into materials. To protect your roof do what is common on Sailboats and other yachts.
Drill a small pilot hole for the screw and fill it with silicone sealant. Then insert your screw. after the screws are in cover them with more sealant. I would also put sealant under the "feet" or mounting bracket of the panels.
This should seal the threads and under the head and not allow water ingress.
You definitely do not want water getting in to the plywood structure of your roof.
