JASinIL2006
Vice Admiral
- Joined
- Feb 10, 2012
- Messages
- 5,729
Clearly fiberglass! No need to worry much about the cut edges. Just be sure to seal to protect for water intrusion around the perimeter of whatever you intall, as well as the screw holes, and you're good! I'd probably use 3M 4000 UV as suggested above. That way, you'll be able to get it off, if that's ever needed.