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haha, ya that would give more room for solar also 🤣. I would like to see more people actualy climb up there twice a year check the sealant and renew as nessasary. then we could have vents that are good for removing heat and skylights for letting more light in with out having to worry about rot. the rv companies could help out also by moving away from wood and using to 100% composits that are not affected by water. then if you do get lax on your inspections and get some water damage it is all cosmetic and not structural.
You should look into Henry 887 Topicool (white) 100% silicone roof sealant.
this applies at like 22mil. It’s insane. 5 gal for like 400$.
I did 3 trailers in this so far. Excellent results. Can roll, brush or spray it on. I put it everywhere.