SOLAR ATTACHMENT SURPRISE--NEED SUGGESTIONS
All set to attach the 1st of 2 solar panels. Aluminum roof. Very sturdy. At a vent opening, looked like about 1 1/2 inch plywood. Put a lag screw in and it spun and spun and spun, etc. No grab. Knock...
Forum Discussion
I just measured the thickness of the wood underneath the aluminum roof at a vent opening--It's 1 1/2 inches thick. This is near where I drilled the holes that didn't take. I used 1 1/2 inch lag screws which would have stopped short of coming through.Very confusing.
