me and my friends have a few hunting cabins that had started out as RV's or mobile homes and then were added onto making them more fixed places
Over the yrs we tried a bunch of different roof coating
some were just plain lousy and some lasted a few yrs before failing(and trust me prep work was done to things before trying them, once wire wheels a whole roof on a 12x60 ft roof , talk bout a NOT so fun job LOL)
any how the best product for the price we found has been this stuff
https://duckcoat.com/duck-coat-roof-coating/
its the one of the only one's that has held up to ponding water and Only place we can get it is from menards, which is a was away for us here in PA< but its been worth the costs to have shipped!
way better than anything we have tried from Lowes or home depot and Ace hardware, some costing twice as much too and didnl;t hold up at all as to this stuff
and YES we have tried flex seal on small things and IMO, its JUNK and a TV hype product, with a very short life span!
this Duck Coast has survived winters and ice and??
it isn't a true rubber roof, its some sort of coating that just has some stretch to it
I have no issue's recommending it
just make sure roof is good and clean first a, MIX it really good before using too, and do at least 2 coats of it
we roll it on with a paint roller
its lasted 10+ yrs now on the one section and have a few others pushing 5-6 yrs now
we plan to re coat them all this summer if time allows
better to re-coat before it works up is our thoughts
IF you wanted a better product I can recommend one, but its going to get a LOT more costly, but it will last a LOT longer, and be heavier
Let me know I have to look up exact info if you want, we used it once, very impressive, but way too costly for what we were doing with it!
one other perk to the duck coating, is it has a very reflective quality, it cuts down on heat from summers sun, my an amazing amount
I had a aluminum diamond plate large tool box that lives outside, and in summer time it would get so hot it would burn your skin if you touched it
I coated that and now its never hot to the touch at all, an amazing difference