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Old 06-18-2016, 10:47 AM   #1
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Rubber Roofs

I have 2009 Monaco Riptide. It has long fiberglass caps on front rear and about an 8 inch 90 degree fiberglass curved cap taking the roofing down the sides. It has a rubber type roof between the front and rear caps and it covers the curved side caps down to a side walls. Just above the side walls there are bubbles in the rubber roofing pretty well along on both sides. I assume it is caused by heat and I have had no issues on leaking. Are these bubbles a concern or common?

Also, anyone know what type of roofing material Monaco might have used for their rubber?

How long are these roofs normally good for if maintained? And if they are stored under cover is there any maintenance and I assume they would last as long as the coach unless damaged. And are there any advantages to rubber over a full fiberglass roof, other than maybe easier to patch?


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Old 06-18-2016, 01:47 PM   #2
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EDPM, or ethylene propylene diene monomer (M-class) synthetic rubber is the usual 'rubber' roof used on RVs and stationary buildings. It periodically needs attention as it is often covered by a sealant to block UV rays. On a stationary building, it's often covered with hot asphalt and gravel, but that doesn't work well, (especially for vehicles behind you) on an RV.

In addition, caulking at joints and objects coming through the roof should be checked every six months to be sure it's still intact. Dicor self-leveling caulk is an excellent product for caulk, also Dicor makes liquid sealant for the periodic re-coating of the EDPM membrane.

Maintaining the roof and inspecting or repairing caulk is far cheaper than the damage done by leaks or replacing the EDPM membrane. There are alternative roof types, some are plastic 'bed-liner' like coverings, but they do cost money.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 06-19-2016, 07:59 AM   #3
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Thanks BF,

The roof has been maintained and appears in good shape. My concern were the air bubbles on the curved section above the seam where the roof wraps down and over laps the wall. Yesterday, it was very hot, probably well over 100 degrees on the white roof. The bubbles were very apparently all the way across the curved section and visible from the ground. There are no bubbles anywhere else on the top of the roof. It rained last night and I went out when it was much cooler and the bubbles were barely apparent. I did some research and found this site where in the Q and A, they mention bubbles and the fact they are normal. The idea being they do not want to stretch the material so tight on each side that there is no give in it when it expands and contracts. The body paint extends up into the membrane on the sides, it is dark pewter and not white on the front half, thus there are more bubbles there due to the dark color absorbing more heat.

FAQ | Dicor Products | Official Website
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