Two years ago I used a silicone type caulk/sealant for my trailer roof that was leaking. Now the leak is back. I think the sun/heat of south Louisiana is not helping the sealant.
Has anyone tried Flex Seal on a trailer roof? I am not sure I can use it over the silicone so I probably have to remove that first.
I just finished redoing my trailer again. All of the sealants I’ve used on a roof don’t work. I finally got these big bands of elastic rubber stuff that RV people use. It works much better.
Thanks for the suggestion. I will read up on it.
Did you put it over the other stuff or did you remove the old stuff first?
What prep work did you have to do to the surface?
Basically I pulled/sanded off anything I could. I try to grind down as much rust as a I can and put a rust converter on it, which seals it. Then I just put it on and painted over it. It has more a fabric surface so doesn’t look like metal when you paint it, but that’s OK by me.
caulk/silicone does not do well with weather IME. our trailer roof is butyl taped (double sided) down, screws along roof line, then the outside seam is covered by what my trailer manufacture calls roof tape which is applied then heated to ensure a firm hold. have not had any leaks at all.
Eternabond and nothing else! You can put it right over anything else with some cleaning and maybe their primer. It does NOT come back up so watch the videos but it is easy to apply.
Flex seal lasts about 3 days in the sun…
I used Eternabond on our RV roof. First, I cleaned the roof, then scraped off as much of the old joint sealant off as possible, resealed it with a smooth line across the top, let it dry, and then placed the Eternabond tape over top. The Eternabond was about 2" wider on each side of the joint, so it had plenty to adhere to.
The Eternabond did eventually begin to come loose in a few places, but it was 3 or 4 years later). Note: The RV roof was a fiberglass material, so it was a bit porous. That may have impacted the Eternabond “stickability” factor. I’d think a smooth metal roof would have far better potential.
I’ve used the same roof caulk, Sundowner used when they built the trailer. The original lasted 5 years. My application lasted 5 years. The Eternabond tape has lasted six years and is still going strong. The only place the tape was losing bond was at the front of the trailer. The air stream was lifting the edge. That was fixed by overlapping the edge with aluminum tape to the vertical.
I cleaned all old sealant to the bare metal of the roof with a wire brush. Instead of buying a roller to adhere the tape to the roof, I used a caster wheel from a chair. Clean surface and rolling the tape down is important to a lasting seal. Hand pressure alone isn’t enough.
I’m glad so many people have discovered Eternabond, also. Good stuff!
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