Originally Posted by TexasBBQ
Todd - does your roof extend a few inches down on the left and right side? If so did the rubber stay put and not sag?
The original EPDM rubber folds over the roof edge and down the side but only about 1/4 of an inch. Then it has a full length rail, the kind that has the rounded rubber insert (don't know what they call it) slid into it once the screws are in place to pinch the EPDM rubber against the side of the trailer. There's a rain gutter on both sides (again full length of the trailer) that is just below the rail. What I did when I applied is to clean about 6" of the roof line on top and down onto that rail all the way around the trailer. Then I purchased a 1 gallon can of EPDM liquid rubber and painted (as mentioned more like blobbing) it all the way around and over the edge. Most of the rubber just sticks and as long as it's not an excessive amount, it didn't drip or run. It stuck pretty good right where it was. Now that's not to say some didn't run or sag. Where I applied too much, it did, but it ran into the rain gutter. Once cured I used a flat head screw driver and dug it out. That only happened in 2 places. Other than that it all stuck. Now the front and back are a little different. The front has the same rail as the sides but it's on the upward curve of the front of the trailer. This means any water getting past the rubber insert could get into the rails and into the screw holes. This is where I believe my front water leaks were coming from. I blobbed the EPDM liquid rubber over the entire top of it right over onto the metal on the other side of the rail. There is one area where the EPDM liquid rubber ran a bit but it's not visible from the ground so I don't really care. The back EPDM rubber is pinched by an aluminum angle that runs the entire back of the trailer. I EPDM liquid rubbered right to the back edge of it. No need to go down the side of it. The stuff stuck like glue and sealed the entire roof. Now someone might say "but now you can't get the roof off if you have a major repair". Nope, not true. This rubber can be cut just like any other rubber. It's very difficult, but a good box cutter will cut through it and then it's just a matter of pealing off the cut out area. I've got to cut a hole in the roof when I add my vents for my black and gray water tanks so it'll be interesting to see just how thick a coat I put on the top. I wouldn't try and use it on a large side area as it may be too heavy for that, but for just over the edge, it worked fine. EPDM Coatings gives a $150.00 AMEX gift certificate for testimonials, pictures, and video of the EPDM liquid rubber. I uploaded all three last night but will be posting the video on YouTube here shortly. I'll add a URL to my signature line when I have that done. It's a really great product and no, I don't own stock in the company - but wish I did! With the $150.00 AMEX gift certificate that effectively brings my new roof down to about $220.00