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Dicor has a remedy, which may be read at: https://dicorproducts.com/faq/#petroleum-distillates
If you desire a specific answer to your issue, there is a place to ask it on the Dicor website, it's called "ask Rudy"..
The most common cause is someone using a product containing petroleum distillates on the EPDM material. That webpage tells you how to identify this.
That may not be the cause though, another cause is the EPDM material being laid before the glue is ready.
Edited September 21 by Ray,IN
The glue bonding the roof membrane to the underlay has let go. You have two choices; inject glue through the roof membrane, then re-seal it, or live with the balloon.
The glue bonding the roof membrane to the underlay has let go. You have two choices; inject glue through the roof membrane, then re-seal it, or live with the balloon.
You can probably get access to the space under the material from the front of the trailer and use something to spreat the glue back well under the material or you could cut the material and then repair the cut once it is glued back in place. You need to make sure that you use the proper glue to put it back and the same with the repari of any cut you make. I would not use live with that problem as it will likely get worse and in time tear away while traveling at highway speeds.
The problem could be caused either by products that have been used on the roof or it may have gotten moisture between the membrane and the underlay. I would want to investigate the cuase of this problem as part of the repair.
I would be concerned that air is getting in there to puff it up like that. If air gets in, water can get it also. I would call Dutchmen customer service, especially if I purchased this new or even otherwise to see what they suggested I do. This is a giant bubble, not the standard bubbles, and I would make sure that was understood. This is not "normal". I once read a post where a family was cruising down the highway on vacation and suddenly saw their roof peeling off, so I wouldn't ignore it. We had an entry level TT from the worst of manufacturers and never had a problem like this with the rubber roof in the 5 years we owned it, so I would be very firm with the manufacturer about my displeasure with the situation. If the manufacturer chooses to ignore it, Dicor may be able to advise, but I would still make the manufacturer aware that their 2018 product in less than 2 years was requiring repairs most likely due to the way the roof was installed unless it has in some way been abused.
I would definitely get a new roof. There's a good chance that water had seeped under the rubber/vinyl and dissolved the water based glue. If so, you may find water damage when you peel off the roof material.
In any case, if you didn't have water under there before, you will have in the future if you don't repair/replace the roof. I wouldn't "live with" it.
Dicor has a remedy, which may be read at: https://dicorproducts.com/faq/#petroleum-distillates
If you desire a specific answer to your issue, there is a place to ask it on the Dicor website, it's called "ask Rudy"..
The most common cause is someone using a product containing petroleum distillates on the EPDM material. That webpage tells you how to identify this.
That may not be the cause though, another cause is the EPDM material being laid before the glue is ready.
I sent an email to Rudy last night. Hope to hear from him soon.
The glue bonding the roof membrane to the underlay has let go. You have two choices; inject glue through the roof membrane, then re-seal it, or live with the balloon.
I am not sure if we have a rubber roof (Dicor) or an Alpha Superflex TPO roof as both are listed in the Dutchmen owner’s manual.
You can probably get access to the space under the material from the front of the trailer and use something to spreat the glue back well under the material or you could cut the material and then repair the cut once it is glued back in place. You need to make sure that you use the proper glue to put it back and the same with the repari of any cut you make. I would not use live with that problem as it will likely get worse and in time tear away while traveling at highway speeds.
The problem could be caused either by products that have been used on the roof or it may have gotten moisture between the membrane and the underlay. I would want to investigate the cuase of this problem as part of the repair.
It did rain a couple of days while we were traveling and there was a leak right over the bed. Fortunately, we had good weather the rest of the trip. We tarped it due to Hurricane Dorian and still is tarped. I think there was inferior glue placed from the onset. Did I mention it had to be completely rewired in 2018? In the shop for 3 months!
I would be concerned that air is getting in there to puff it up like that. If air gets in, water can get it also. I would call Dutchmen customer service, especially if I purchased this new or even otherwise to see what they suggested I do. This is a giant bubble, not the standard bubbles, and I would make sure that was understood. This is not "normal". I once read a post where a family was cruising down the highway on vacation and suddenly saw their roof peeling off, so I wouldn't ignore it. We had an entry level TT from the worst of manufacturers and never had a problem like this with the rubber roof in the 5 years we owned it, so I would be very firm with the manufacturer about my displeasure with the situation. If the manufacturer chooses to ignore it, Dicor may be able to advise, but I would still make the manufacturer aware that their 2018 product in less than 2 years was requiring repairs most likely due to the way the roof was installed unless it has in some way been abused.
I called Dutchmen a few days ago and was pointed to the dealer (La Mesa R.V. in Sanford). They said it wasn’t under warranty anymore and to bring it in for a diagnostic for $150. I left a message with Dutchmen customer service today and hope to hear from them the next business day. The roof has not been abused. It sits in an opened area and doesn’t have any trees over it.
I would definitely get a new roof. There's a good chance that water had seeped under the rubber/vinyl and dissolved the water based glue. If so, you may find water damage when you peel off the roof material.
In any case, if you didn't have water under there before, you will have in the future if you don't repair/replace the roof. I wouldn't "live with" it.
Something will have to be done because we can’t use it as is. It is just a matter of who is responsible and who is going to fix it!!
FWIW, The Dutchmen factory service center in N. Indiana does excellent work. We took our Grand Junction 5er there for repair to a slide mechanism. They found a bent arm, and replaced the entire assembly at no charge to us. The service center manager said it was a factory defect. Our 5er was 3 yrs old at the time.
They have electric only parking spots available outside the factory. We stayed overnight in our 5er, and early next morning they took it inside for repairs/replacements.
Edited September 21 by Ray,IN
FWIW, The Dutchmen factory service center in N. Indiana does excellent work. We took our Grand Junction 5er there for repair to a slide mechanism. They found a bent arm, and replaced the entire assembly at no charge to us. The service center manager said it was a factory defect. Our 5er was 3 yrs old at the time.
They have electric only parking spots available outside the factory. We stayed overnight in our 5er, and early next morning they took it inside for repairs/replacements.
Unfortunately, I don't think we could take it safely to Indiana from Florida. The photos show our temporary fixes. My husband put a strap on the roof to start with until we got to the campground. Then he removed the old caulk and the original bar in the front. Next, he put the rubber roof under the lip, put the original bar back on, put a 2" steel bar next to it, and used Dicor caulk to spread all over that area. That held it for a day, but even with the strap the bubble appeared again. Lastly, he made a "constraption" out of plastic lattice work, a treated wood brace and 2 straps that went around the entire trailer. This held the bubble down as we traveled back to Florida.
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Wow! What a mess to deal with! So sorry.
As we drove on highways we have seen others do this and commented that the whole roof could be torn off while driving. Most people probably don't even know that theirs does that. Good thing you caught it but sounds like a difficult fix by yourselves. Hopefully, you can find someone to fix it.
I’m not sure the photos will open.
Edited September 22 by Cindy F.