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Old 08-04-2016, 05:03 PM   #1
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Rubber Roof Issue

Today we looked at a 2012 Keystone Cougar 274RLS. It's like new but when I went on the roof I noticed the rubber membrane is bubbled all over the roof. There were no holes or cracks but I'm concerned about the fact that the membrane separated from the roof in lots of areas.

Should I be concerned about this? We put a deposit on it.

Thanks so much.

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Old 08-04-2016, 05:26 PM   #2
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I'd pass on the unit. Current 2013 has no bubbles and the previous usnits with rubber roofs did not have bubbles.


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Old 08-07-2016, 06:10 PM   #3
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If you could get the unit at a discount... I would draw a small circle on each bubble... I'd consider putting a hole in each bubble with a needle and letting the air out... I'd push in some adhesive... stick the membrane back down to the roof.... and put a dab of sealer on each pin hole... this is the type of repair a dealer would do.. if the unit was in the shop under warranty... and is a suitable repair...
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Old 08-07-2016, 06:49 PM   #4
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I'm with jelag a discount and if they repair it get a written warranty on the repairs, and no it's not normal to have bubbles in the membrane. Sounds like a bad glue job or the glue has broken down.
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Old 08-07-2016, 11:53 PM   #5
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Originally Posted by camperkids View Post
I'm with jelag a discount and if they repair it get a written warranty on the repairs, and no it's not normal to have bubbles in the membrane. Sounds like a bad glue job or the glue has broken down.
Fist question to ask is why wasn't it fixed under warranty?

Repairing the roof as described is a tedious task....do you only fix the 1" -1/2" bubbles or do double the work and fix the 3/8" bubble as well ....then there are the 1/4" bubbles. ...What it will look like in 4-5 year and how will the patch up affect the resale at that time.

If the rood isn't right, then what else? Some RVs start out wrong and move through the factory with mistakes being make on one after the other.

Unless the price is discounted more than the cost of replacing the roof I'd move on.....there are thousands of RVs (especially mass produced like Forrest River, Keystone, Jayco) out there for sale.

RV industry is booming right now but people change RVs an average of every 3 years.......in 2-4 years the market will be flooded with used RVs.
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Old 08-09-2016, 09:02 AM   #6
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That to me sounds like a roof that needs to be replaced,,, not repaired...
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Old 08-09-2016, 09:15 AM   #7
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Depending upon the size and location of the bubbles there is likely no real problem other than cosmetic. Unless there are holes the membrane will not leak. Do not intentionally poke holes in it unless you want it to leak.

Negotiate a discount if you and a clause that says if the bubbles increase in size the membrane will be replaced.
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Old 01-12-2017, 07:47 AM   #8
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I have extensive blistering on a 2 year old Elkridge DICOR roof. Blisters are mostly about 3/8", with largest about the size of a quarter. The blister is in the membrane itself, and not under it because if you scrape it, you see white rubber underneath. My roof is tan and RV has been left in central Florida the past two summers. It was very hot and humid this past summer but I'm sure Texas and Arizona are worse.

DICOR has the pics but say they have not seen this before and are slow to respond. My local mobile RV guy suggests the rubber is delaminating.

The roof has not been abused and I know how to care for it.
Does anyone have similar issues?

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Old 01-12-2017, 08:50 AM   #9
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Rubber Roof Issue

That is unique from my experiences and knowledge. It appears the EPDM is reacting negatively with something. If you have cared for this roof yourself you know what it has been washed/cleaned with in the past - ie products. EPDM manufacturers post compatibility lists for EPDM with many substances; petroleum solvents are the biggest "no-no" but there are others.....

One thing to consider would be what "environmental" affects could be contributing to the negative reaction. The excessive heat should not create a problem; I am wondering about vegetation/air emissions carrying trace components and depositing these on the roof. Dissolved in water, ie high humidity, they may create a component that "might" react negatively with EPDM. A stretch thought, but something to consider. I hate parking under pine/spruce tress due to the black spots created by their pitch.

Good luck in figuring it out and determining a resolution.

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Old 01-12-2017, 09:59 AM   #10
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Two suggestions
1: If you really like the unit.. Demand they replace the roof FIRST!

2: If the unit is one where you can "take it or leave it" Leave it.
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Old 01-12-2017, 11:17 AM   #11
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Brian, good points, but DICOR explored each of these.
They now acknowledge that there is a problem with the top layer, but say it does not lmpact wear. They say it is cosmetic. My roof is tan and don't know if issue relates to colored roofs.

Their offer is to provide a full 12 year transferrable warranty but I don't think this will convince a potential buyer. They were pretty steadfast on the offer, but they are dealing on warranty with their own supplier.

If other people have this issue, let's hear about it and let Dicor know we need a better solution. I can't be the only one. Where else should I post? My unit is Hearland and they claim not to have seen this. It may be that it takes 2 years for the problem to surface and it is just starting. If so, DICOR could have a big problem.

When blisters are abraded even by a lightweight like me, the membrane skin is broken. This looks terrible and will definitely impact resale or trade value. I probably have about 20 spots as shown in this pic from one visit to the roof when i cleaned off my slides

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Old 01-17-2017, 06:09 PM   #12
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Jan 15, 2017 DICOR has agreed to replace roof.
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Old 01-18-2017, 06:01 AM   #13
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Thanks for the update, congrats on the resolution and thanks for Dicor steeping up.

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