PlanetExcellent
New Member
- Joined
- Sep 16, 2021
- Messages
- 43
I have a year-old Forest River Surveyor Legend travel trailer with a PVC roof. The roof has a slight texture to it; it's not smooth and shiny like fiberglass. It's not uneven or "bumpy", just slightly textured almost like sandpaper.
I'm considering mounting 2 210w panels using unistrut rails secured with VHB 5962 tape, possibly with a few screws directly into the roof. I would run the VHB tape the entire 5.5 foot length of the unistrut. I've seen that AM Solar uses short lengths of VHB tape to mount panel brackets to metal/fiberglass roofs, with the addition of some screws on EPDM rubber roofs. I figure that if short lengths of VHB work on a perfectly smooth surface, long lengths with more holding power should work on a less-smooth surface. And if VHB + screws work on rubber roofs, they will work even better on a PVC roof.
Looking to hear from people who have used the VHB/unistrut method on a roof that is not as smooth as metal or fiberglass.
EDIT: I plan to clean the surface with alcohol, and I'm considering using the VHB primer / adhesion promoter that 3M recommends.
I'm considering mounting 2 210w panels using unistrut rails secured with VHB 5962 tape, possibly with a few screws directly into the roof. I would run the VHB tape the entire 5.5 foot length of the unistrut. I've seen that AM Solar uses short lengths of VHB tape to mount panel brackets to metal/fiberglass roofs, with the addition of some screws on EPDM rubber roofs. I figure that if short lengths of VHB work on a perfectly smooth surface, long lengths with more holding power should work on a less-smooth surface. And if VHB + screws work on rubber roofs, they will work even better on a PVC roof.
Looking to hear from people who have used the VHB/unistrut method on a roof that is not as smooth as metal or fiberglass.
EDIT: I plan to clean the surface with alcohol, and I'm considering using the VHB primer / adhesion promoter that 3M recommends.