Which adhesive caulk for solar panel mounts??
My CW has Sikaflex in 221, 505 and 715. Which one is best to mount solar mounts to thin fiberglass roof along with screws?
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3M 4200 is a sealant, it cures somewhat soft. Adhesion, particularly to FG, is a different matter, not everything adheres well to cured polyester resin but this is not crucial when sealant is used to seal rather than to hold.
Sounds like well nut.
Hitting the rafters is a good idea too, when practical.
The RV manufacturer recommended hollow wall anchors that flare out when tightened.
Sounds like well nut.
Hitting the rafters is a good idea too, when practical.
