I used a two part sealer (Dicor?) from Camping World on another trailer. It was quite effective. The roof never leaked but it did shed a lot of old roofing material while washing it. I decided it was better to seal it than wait for it to get worse and have big problems. The directions on the containers addressed weather conditions for application.
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2016 3160, Legacy, Sailuns, Splendide 2100 xc vented, 1 1/2" axle lift blocks, disk brakes. 2014 Ram 3500 SRW SWB 4X4 6.7 Aisin Mega Cab, EBC slotted disks and brakes, Titan fuel tank.
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