Originally Posted by Hunting-231
you can try this on the joints - I've used something similar on a 5th-wheel roof (rubber membrane was leaking). It will seal the joint - maybe use a couple of staples in areas that you think might curl.

https://www.amazon.com/Typar-Self-A...71J3/ref=cm_cr_arp_d_product_top?ie=UTF8

Great minds.....


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