Originally Posted by Tomahawk
I am in the process of sealing my roof withe Eternabond tape. I have completed all the front cap to roof joint, the front vent, the skylight, the fridge vent, the black tank vent, and gray tank vent. I have the rear vent to complete and the rear wall to roof joint. I have a few questions.
1. Should I use dicor along the enternabond edges?
2. When I do the rear wall to roof joint. How far to lap it. The rubber roof is attached with an aluminum channel with butyl tape between the rubber roof and aluminum channel. A plastic insert slides into the aluminum channel and covers the screw heads. I was thinking to lap onto the plastic but not all the way down to the fiberglass siding.
3. For the seams between the sides and the roof, more Eternabond tape or just Dicor at the top of the aluminum channel between the channel and the rubber roof?
Links at end for Eternabond and a installation guide for different surfaces.
1. Eternabond uses no caulk along the edges. I just finished mine last week, no Dicor needed.
2. According to Eternabond, no less than one inch beyond the joint. I probably went 1-1 1/2 inches onto the fiberglass front joint on the front because of wind forced rain. On the back I just went up the side of the channel, did not go over it.
3. I didn't put anything along the sides. The butyl 'putty' under the channel hasn't bothered me yet.
I've only had one leak a couple of years ago, no damage. After multiple inspections and occasional addition of Dicor, I decided to try the eternabond.
Any place that had Dicor, I covered it since that is the only place that has ever leaked.
I put a layer on the roof where the TV antenna rests when not in use to prevent wearing the roofing. This was on top of the tape I put there eight years ago (not worn through yet!).
I'll let you know in about 15 years or so how it worked out.
EternaBond Leak Repair Installation Instructions