Need opinions about recaulking roof

I tried going over the old stuff when I developed a leak. I just spent today removing the old and the new as the leak persisted. I think the water trapped under the old caulk was evaporating in the hot sun causing areas to not adhere correctly.
Today I removed all caulking and dried area thoroughly. Then I recaulked the area all fresh caulk. To early to tell if this will stop the leak.
While I own a MH and not a TT the principle is the same

I'd prep the areas really well and wait for a sunny day (you're in WA) and re-caulk using Dicor Self Leveling Lap Sealant. The prep job is really important. I'd use mineral spirits and a good roughish bath rag (smaller than a hand towel) - prep the area, let it dry out really well, then caulk.

shelbyj wrote:
I noticed that the caulking on the roof is starting to crack and has a few spots on the ends that has started to pull up. Wondering if I should just caulk over the old stuff (after properly prepping) or remove the old stuff amd start fresh.

I know a lot of folks say clean good and just add more, but IMO you will never get a clean surface down inside those cracks and thus will not have good adhesion there. Not positive what the actual caulk manufacturer's recommend re: existing caulking, but in general I believe then sealing a new fixture they want the caulk to go well onto the actual roof material so one could extend that to mean you would need to TOTALLY ENTOMB the existing caulk and then go somewhat onto virgin roof material to get a good new sealing job. All this is one reason I'm in the camp of REMOVE IT ALL and go the ETERNABOND route ONE TIME and FORGET ABOUT IT.

Larry

Two things stand out to me from the pictures: First, that whole seam is holding water on the roof like a dam. Second, the caulking material is failing.

I would remove all of it and re caulk or use Eternabond tape, whatever is the choice of the OP. I've found that Eternabond tape is superior to any sealant I've used.

I would remove the old and put new on!

Remove the old caulk, clean well and apply Eternabond.

It's a one time repair.

In what areas should Eternabond be used and when should something like Dicor Self Leveling sealant be used? Or, can Etrnabond be used pretty much everywhere. My trailer has an aluminum roof, but Dicor is used along the perimter of the roof as well as around vents, etc. Is Eternabond an option along the perimeter?

I would remove all of it and re caulk or use Eternabond tape, whatever is the choice of the OP. I've found that Eternabond tape is superior to any sealant I've used.

X2 except I would re-caulk AND use Eternabond tape. You'll never have to do it again.

westend wrote:
Two things stand out to me from the pictures: First, that whole seam is holding water on the roof like a dam. Second, the caulking material is failing.

I would remove all of it and re caulk or use Eternabond tape, whatever is the choice of the OP. I've found that Eternabond tape is superior to any sealant I've used.

I would agree....am in the process of doing the same myself. I am using a metal putty knife with the corners ground off and it is working well. If you were to buy the 6" wide you probably wouldn't have to remove the old...also would use their spray cleaner.

djsamuel wrote:
In what areas should Eternabond be used and when should something like Dicor Self Leveling sealant be used? Or, can Etrnabond be used pretty much everywhere. My trailer has an aluminum roof, but Dicor is used along the perimter of the roof as well as around vents, etc. Is Eternabond an option along the perimeter?

djsmauel, I would be hesitant about using the eternabond tape on the aluminum siding along the uprights in the corners. I just tried that and it is a nightmare. Where the two siding peices slip into eachother it always leaves a gap and the tape will not fill that. It seemed to lift at every convex of the aluminum siding and took a ton of rubbing to get it to stay down and I'm not sure if it ever will fully, so that is why I have to caulk it now. Also the corner trim is less than 3/4 of an inch on the one side and the tape sticks out and you have to caulk over it. Unless someone else has a better idea and I am doing this wrong, it would have been easier with butyl tape and caulk. I have to recaulk it anyway. For the sides of the roof and top trim I would use it.