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 > Henry Tropi-Cool VS EPDM Roof Coatings

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TenOC

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Posted: 10/14/20 05:48pm Link  |  Quote  |  Print  |  Notify Moderator

EPDM Liquid RV Roof VS Henry Tropi-Cool

I need to recoat my 7-year-old 5th wheels roof. About 5 years ago I used EPDM RV liquid roof coating on a travel trailer. But after a number of years it started peeling up. I am thinking about using Henry's silicon roof coat this time.

I am looking for some real-life experience on the 2 products. Other product suggestions are welcome.


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Posted: 10/14/20 05:53pm Link  |  Quote  |  Print  |  Notify Moderator

“But after a number of years it started peeling up.”

That is normal, expected. Sounds like good service. One of the reasons I re-coat every year with Heng’s, a thin coating.


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Posted: 10/14/20 06:09pm Link  |  Quote  |  Print  |  Notify Moderator

Good question. When we bought the sig Class C it had been splashed crudely all over the roof (and here and there on roof things) with some kind of white (ish) stuff. It started to peel off the first winter rains. Big pieces of rubbery skin, exposing the old rubber roof (in bad shape)

RV guy says that is from poor application. They do it right indoors with controlled high temps and are fussy about it all.

So it may not be the different products at issue, but how they are applied. Still, I am hoping to learn more about this too. I have used Eternabond a lot to fight the small leaks here and there as they have showed up in the three years since. Hasn't been that bad, but annoying when it happens.

It looks like one of those cartoons where a guy cut himself lots of places shaving and stuck bits of Kleenex on each cut! [emoticon] The RV guy said he would not bother with an overall coating doing it myself or the same peeling thing would happen, even doing it in the summer when it is warm and dry for enough days in a row. So I just keep buying more Eternabond. [emoticon]

Still, I would like to cover it all so it looks nice and stays waterproof for a few years. Getting those roof guys in to do it costs more than I paid for the whole MH it seems like. Phooey on that


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Posted: 10/14/20 08:08pm Link  |  Quote  |  Print  |  Notify Moderator

I wonder why you need to coat an EPDM roof membrane. They last 30+ years on a building without doing anything to them.

The RV EPDM membrane itself is typically warrantied against failure for 12 years. What would be the effect on the warranty if you slather on some other product?


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Posted: 10/14/20 08:42pm Link  |  Quote  |  Print  |  Notify Moderator

IMHO, you are quickly approaching the time to peel it off an recover. Forget EPDM. Maximum life of about 10 years. PVC or TPO, commercial grade.

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Posted: 10/15/20 05:53am Link  |  Quote  |  Print  |  Notify Moderator

Why did you recoat a 2 year old roof???????? warrantied for 12 years????? it peeled because of improper preparation. No new coating is gonna stay down without removing all the old first. I recoated 2 roofs. First was 16 years old. 2nd was 9.


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TurnThePage

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Posted: 10/15/20 06:14pm Link  |  Quote  |  Print  |  Notify Moderator

beemerphile1 wrote:

I wonder why you need to coat an EPDM roof membrane. They last 30+ years on a building without doing anything to them.

The RV EPDM membrane itself is typically warrantied against failure for 12 years. What would be the effect on the warranty if you slather on some other product?
One really good reason is that even if the EPDM roof is still in reasonable condition, after a few years it's mostly black and gets super hot in the sun. When I recoated mine, the entire RV stayed much cooler.


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TenOC

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Posted: 10/15/20 06:24pm Link  |  Quote  |  Print  |  Notify Moderator

TurnThePage wrote:

One really good reason is that even if the EPDM roof is still in reasonable condition, after a few years it's mostly black and gets super hot in the sun. When I recoated mine, the entire RV stayed much cooler.


TurnThePage what did you use? Are you happy?

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Posted: 10/15/20 06:41pm Link  |  Quote  |  Print  |  Notify Moderator

TenOC wrote:


TurnThePage what did you use? Are you happy?

I used the Hengs product. It's only been a little over 2 years so I can't make any grand claims, but so far I'm very happy with it.

My roof is only about 18' long. It took about a gallon and a half to get three coats on it. Application was simple. It was a hot day when I did it, so it was almost drying too fast, and was starting to skin over in the tray. Two partial days to clean and prep, and one day to apply the three coats.

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Posted: 10/17/20 06:29pm Link  |  Quote  |  Print  |  Notify Moderator

I purchased Rubberseal to recoat the roof of my trailer as it's the best economical option. I've had good luck with hengs on EPDM roofs with great success. Be sure to prep your roof correctly and apply as directed and you should have good results. I've ordered 2 different times from this supplier. Both times I had it in my hands within 3 days even though the expected delivery date was 5-10 days.

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