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Old 03-22-2016, 05:01 PM   #1
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What to do with my leaky roof?

1986 Winnebago Chieftain 27RT

I have an aluminum roof and I have leaks in several place I can't find. I have replaced the broken skylight over the shower and replaced the AC shroud and gone over all the seams, joints, and protrusions in the roof multiple times with a rubberized sealant. We recently had really heavy rains and I have water coming in at the roof line in the rear corner (among other places). The overhead compartments have water intrusion and there is enough water coming in to see it run down the walls and collect below. The water comes in in the same spot whether the RV is tipped a couple of degrees to the drivers side or to the passenger side. I went up on the roof and looked for a place that water might get in, but can't find anything. Another guy went up there and couldn't find anything either. I ended up putting a tarp over the rig this past weekend to keep the rain we had out, but that's not an acceptable solution because I have to drive it every day (besides it looks terrible).

I'm going to try to tackle one section at a time. Any ideas were to start with this one? I understand that the entrance point may not be where the water comes out, but where?







The last photo is the side at the roof line. I put clear silicone caulk along the seams thinking maybe the water came off the roof, down the side and then somehow went back up under the seam and inside. Seems illogical, but logic is failing me so far.
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Old 03-22-2016, 06:49 PM   #2
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Roof leak

I would remove all the sealant putty, clean all areas good and apply Eternabond 4" Tape on all seams and joints. and check after a good rain. I bought a 1995 motor home with severe leaks I bought 100' of Eternabond Tape and, no more leaks. Eternabond tape sick to any type roof and you can get it on Ebay for about $52 for a 50 foot roll. This stuff is amazing.
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Old 04-07-2016, 03:34 AM   #3
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leaky roof

May have very small pin size holes in the aluminum roof.
Have a 1983 Georgie Boy that had tiny pin size holes in spots, the
aluminum is very thin, strong soaps and acid rain can cause.
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Old 04-18-2016, 04:26 PM   #4
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Do you have fire insurance on it?
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Old 04-18-2016, 05:40 PM   #5
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Alvo,

I have seen on here numerous times about the Eternabond tape being the greatest fix you can do. Like ARFFMAN said, remove old putty, clean the surface really good and put the tape on. Just enter it in a search engine here and you will see.

Good luck , Lynne
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Old 04-18-2016, 05:48 PM   #6
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Do you have fire insurance on it?
It's my home and it's been remodeled (four months of work) and is quite nice inside.







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Old 04-18-2016, 06:51 PM   #7
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Do you have fire insurance on it?

Now that is funny! Fire can be your friend!
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Old 04-18-2016, 07:02 PM   #8
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On mine the clearance lights were acting like a funnel and water poured in. I took them off cleaned up the sealing surfaces and put good caulk not silicone between the lights and the cap and the problem stopped.
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Old 04-18-2016, 07:08 PM   #9
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I don't have better advice than what others are offering... Just want to affirm your idea that water can "wrap around" a downward facing molding through surface tension and wick back up inside. I discovered this while chasing an elusive leak on our old TrailManor trailer.
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Old 04-18-2016, 08:45 PM   #10
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Just a suggestion...

Not cheap or easy...

Liquid rubber.

We posted about using it on a rubber roof and it was a lot of work but the finished product was great.

It is water cleanup and with proper prep and cleaning which is critical and using the primer it sticks like crazy.

The primer tacks up and will remove the gloves.

You will need to remove all caulking and other stuff from the roof and edged.

Scrub it clean and old floor scrubbers are good for this.

Wash with acetone then use cut bristle brush to scrub in the primer into every nook and cranny.

Tape the edges and seams so clean edge.

Let primer get tacky then scrub in the top coat into all roof seams and fittings then roll it across the rest.

It will be a rubber on aluminum roof and will not leak...period.

5 year warranty and if you option the 10 year it is just more stuff.

About 500 bucks or so.

Do it inside or away from trees and bees as they become part of the roof.
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Old 04-18-2016, 10:01 PM   #11
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check the a/c gaskit many times they leak about $25 for a new one
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Old 04-18-2016, 10:07 PM   #12
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Quote:
Originally Posted by ARFFMAN View Post
I would remove all the sealant putty, clean all areas good and apply Eternabond 4" Tape on all seams and joints. and check after a good rain. I bought a 1995 motor home with severe leaks I bought 100' of Eternabond Tape and, no more leaks. Eternabond tape sick to any type roof and you can get it on Ebay for about $52 for a 50 foot roll. This stuff is amazing.
Not if you have used silicone sealant! Almost nothing sticks to silicone and it's very hard to remove completely.
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Old 04-24-2016, 01:33 PM   #13
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Alvo, your concern for getting this done, and soon, is well justified by the fact water damage sends more coaches to the boneyard than any other cause.

I'm with the others that say start over. Start with a corner, a particular seam or a roof vent. Take all the old sealant off right down to bare clean aluminum, and tape or reseal. This would include the complete removal and re-installation of all roof vents, that roof rack, and whatever else you have up there. I would start in the area you're seeing the water and work out from there.

Yes, a time consuming ugly job. Done properly though, and maintained well afterward, and it will be a very long time until it needs to be redone. What you have now is the result of hastily done patches. Best of luck!
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Old 04-25-2016, 06:44 AM   #14
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Hate to do this "But" you should have started with the remodel at the roof and work your way down.
JMO,
Tim
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