HENG'S Industries Rubber Roof Coating - 1 Gallon | EPDM | Durable Coat | RV, Motorhome, Camper Roof Repair | Waterproof & UV Resistant | 42128-4

from an application perspective, as easy as rolling paint. It's been Fall and Winter and not leaks so it seems to work, but we used two coats

After two years in the South Carolina sun the roof still looks and works great. There's a couple of spots that will need touch up, the largest maybe 1 1/2" by 1" but the majority of the coating is intact. It's not bright pretty white any more but has weathered to a dirty white color. I certainly would use this again! See original review below.I used this product to coat my 28 ft trailer roof. The original roof was getting old and was chalky, thin, and checkered from age. The South Carolina sun was not helping and before I replaced the roof I decided to try to reseal it. I used 4 inch Eternabond tape around the vents, antenna, and skylight over the shower. I washed the roof with a TSP solution and rinsed it. In hindsight I should have probably washed it again but I will explain that later.I cleaned the edges of the roof with denatured alcohol and a rag, then applied the Heng's coating to the edges with a brush. I did the roof with a roller by pouring a puddle on the roof and rolling it out. I worked from front to back then left it to dry overnight. You could still see the color of the old surface through the Heng's much like the old wall color when you paint with latex paint.The next day I went up on the roof and when I walked on it I saw that small areas were peeled off. I tried to rub the edges of one and the Heng's peeled up like it was not adhering to the old surface. It was about the size of a dinner plate when I got done. The rest seemed to be sticking so I attributed the peeling in that spot to my prep and hoped that it was the only area. I did the edges and rolled the roof again and let it dry overnight. The 28 ft camper took 1 1/2 gallons to complete.The next afternoon I looked at it and it looked good except for some small bubbles, maybe a half dozen, 3/4" in diameter. Again I thought it might be the prep and left the roof alone. That was in the first week of July.The product said 24 hours cure time, but this application had a month in the SC sun before we used the camper. This weekend was the first time we used the camper since then. We had a downpour, "build an ark" rainstorm driving to our campsite, and two nights of severe thunderstorms when we were there. I didn't know what to expect since there were the adhesion problems with the application. When we left I went up on the roof to sweep off the top of the slide-out and saw the Heng's coating survived the trip and the storms there unscathed. No bubbles, no peeling, no damage. I went up on the roof tonight and looked closer and could see no evidence that it had bubbled or peeled.Apparently after curing it is much more durable that it looked initially. Time will tell but at this point it seems to work as advertised. The only thing I would do differently is wash and rinse the roof twice and maybe use denatured alcohol on a rag and wipe it down the entire roof before applying.

Works very well sealing leaks on RV roof.

Camper roof is about 160 sq/ft. There was enough to do two coats with no thinning. To clarify the adhesion problem let me walk you through my prep work (and yes this was my first time, but I strive to do things right). I first stripped the roof of everything then proceeded to use Dawn dish soap and a hand/carpet scrubber to scour the top of the camper. I did this twice, camper top was a lot whiter than I originally thought lol. After the two scrubbings I rinsed the roof off for about 10 minutes purging all of the soap. After that I took my pressure washer and went over the entire roof again, in clean socks mind you (no shoes). I then gave the roof about an hour and a half dry time (90 degrees dry climate), and yes it was dry. I then applied first coat, waited the 4 hours and applied the second coat. It looked absolutely perfect when I was done. However when I was putting my AC unit back on I tore a 1" inch gash in the coating. No big deal but when I tried to repair it I pulled up the loose tear and the coating started to all pull away from my roof. So I used a razor blade and cut around it then pulled the rest up. Not sure as to why it was pulling up, it should have adhered better, BUT in all fairness I only gave it 20 hours of dry time, and 24 is recommended. I do not believe this was the issue. The issue was imo that it did not adhere (solidly) to my old rubber/latex roof.Anyways time will tell if this holds up, I will try to keep you updated.

Easy to paint or roll on, it looks fantastic and sticks to everything, making it very useful on an rv roof with obstacles to paint around. Used it 2 years ago, with no leaks, and freshened roof up again with another coat recently. Also used it under slide out for extra sealing, and used small paint brush to redo my raised white letter tires on my truck. Bright white and easy to work with, creamy not watery, easy to give a quick stir prior to usage. Worth keeping an extra quart around for other projects like shower grout etc.

I used this today on my Trailer roof, followed the directions at first with a thin coat, it was easy enough to apply with a paint roller that has a long broom handle attached. Hand held paint roller not so much. I stupidly left the used but closed can on my bathroom fan cover, it slid off around 8pm, spilled and so I had to quickly spread it over the entire roof again. Which I was planning on doing tomorrow but.. ooops. My fault. Hopefully it dries fine overnight and cures tomorrow well in the hot sunny day.