Eternabond tape on roof laps over sealant

I think it is completely worth doing. The enemy of all RV's is water infiltration. I was waiting for my warranty to expire before I did mine, it expired last month so Eternabond is on the agenda for this spring.

I tape the sides and the front and back. Clean the surface well, I spend the extra couple dollars and buy the Eternaprime or Eternaclean (I forget what its called...) and spray and wipe it down really well. I have a hard rubber roller to activate the adhesive, per the instructions.

I have my wife help me by holding one end of the tape while I roll it out to the other end. The instructions say (or used to say) to be careful not to stretch the product, as it won't adhere as well. Take your time, don't stretch it and make sure its lined up level. Pull the backing off the tape and gently press it to hold it. Once everything is in place, go back over with a hard roller to thoroughly activate the adhesive.

The stuff works GREAT. The OEM caulk is poor quality and a poor design. Those seams can leak from anywhere, so if you are going to tape it, tape all 4 sides. Good luck and enjoy the camping season, its quickly approaching!!!

Also, best way to clean before application?

Thanks all! is it worth doing the sides? Or just do the front, back, and slide?

Looking at how the sides of the roof are designed there shouldn't be a leak there.

I put Eternabond on each new trailer as soon as we get it. Only downside may come if you need warranty work. Within the first year my tt had a recall due to not enough screws being used to secure the front cap along the roof top. There was no way I was going to pull it all off to add a few screws. I figure the Eternabond would hold it better than some short screws in thin plywood anyways.

I did have to remove the Eternabond the first time I did it. It didn't adhere completely. My fault, didn't clean or roll it out enough. It's a messy job but do-able with a heat gun. Make sure you clean the areas well and use a lot of pressure when rolling it on.

We applied Eternabond on our 5th wheel roof on the front and back seams and around the skylight - then the skylight got a crack so we have to climb up and take care of it.

I put Eternabond on the seams and roof edges of our Southwind. I lapped it partly onto the rain gutters. Absolutely no regrets.
The Eternabond will last much longer than caulking or Liquid Roof.

We have used Eternabond on three rv's. Hubby just cleans it good, then puts the Eternabond right over old caulk. Last year, he did our Fifth Wheel we had bought for a permanent lot. About as soon as he did the skylight in the shower, we got a crack in it. DARN... He had to remove the Eternabond in order to replace the skylight. It was not fun, but not impossible. Moral of the story...check skylights real well.

What laps are you taking about?

IDK I was thinking of liquid roofing all the seams and roof flanges myself on a new travel trailer so I would not have to caulk ever year.

Like this.