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Old 10-03-2018, 06:17 PM   #1
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Re-sealing roof

I found quite a few spots on my roof channel that were separated allowing the roof to move in the channel. I started on the passenger side yesterday. Took frigging 3hrs to remove the old silicone, and what looked like a layer of self leveling caulk on top.

One side down one more to go. I burned up 3 and a half tubes of silicone in the one side. I'm hoping I won't have to redo this anytime soon.

For those of you who have re done the silicone, how long did it hold up between cleaning/re-application?
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Old 10-03-2018, 08:48 PM   #2
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I may be mistaken but I thought I read recently that silicone isn't the best sealer for RV roofs. Before you do the other side you might want to check a Winnebago chart of approved sealants.
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Old 10-03-2018, 09:46 PM   #3
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Silicone isn't recommended but there have been reports of people calling Winnie and them saying that silicon is fine. Generally, though pretty sure it's a no-no. You can call Winnie and get a PDF of the call outs of all the caulking products recommended for your RV and where they're used. Along with updated recommendations of type...which do change over time.


Personally, I didn't want to mess with any caulking on the roof edges myself, so I used 2" wide Eternabond tape. Hopefully, it'll last for years without need for repeated re-work. So far it looks perfect.


You might get some ideas by reading my blog post about roof work done on a '02 Winnebago Journey: Roof and Roof items... | Chaos Leaves Town
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Old 10-04-2018, 04:56 AM   #4
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Guess I should have clarified when I say "silicone" I use it in the generic way. I used the winnebago reccomended sealant, which in my case is a silicone based product but not pure silicone
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Old 10-04-2018, 10:03 AM   #5
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Quote:
Originally Posted by ACDNate View Post
Guess I should have clarified when I say "silicone" I use it in the generic way. I used the winnebago reccomended sealant, which in my case is a silicone based product but not pure silicone

'Caulking' would be a generic term for it. But, we in the word police will let you off with a warning this time. Next time, you're buying the beer.

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Old 10-06-2018, 06:04 AM   #6
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Originally Posted by Jim_HiTek View Post
'Caulking' would be a generic term for it. But, we in the word police will let you off with a warning this time. Next time, you're buying the beer.


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Old 10-06-2018, 06:56 AM   #7
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Not sure how long warranty is? I have a newer coach, and it’s 10 years.
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Old 10-06-2018, 07:03 AM   #8
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Mine is a 2008. Warranty not a concern at this point. I'm just trying to stay ahead of all the maintenance so I don't have to post a "lost my roof" thread on here.
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Old 10-06-2018, 04:51 PM   #9
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Make sure you check the Gutter channel attachment to the side of the coach. When I resealed mine, I had to replace 80% of the screws as the heads were broken off.


The pictures came out sideways. The first shows The Gutter extrusion on my coach. The second shows how the roof is framed ( Taken at the factory)
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Old 10-10-2018, 04:41 PM   #10
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Sealing gutter to fiber glass roof

I have 2003 journey the fiber glass roof should not be sealed to the gutter rail the fiberglass roof material needs room to expand and contract what little water seeps in will be carried away on the inner gutter look at your end view picture closely
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Old 10-10-2018, 05:00 PM   #11
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I have 2003 journey the fiber glass roof should not be sealed to the gutter rail the fiberglass roof material needs room to expand and contract what little water seeps in will be carried away on the inner gutter look at your end view picture closely
Um. Maybe were using different language to say the same thing but check this video out. start at 9:30 where the guy discusses application of the sealant.

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Old 10-10-2018, 10:29 PM   #12
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The Fiberglas is sealed to the roof edge aluminum at the factory when built. It is also called out as a yearly inspection item to maintain the 10 year warranty to the original owner. This was explained to me at the factory during a visit. The sealant used is called out on the sealant call-out sheet. This is a copy of the roof portion of the call-out sheet for my coach.
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Old 10-10-2018, 11:09 PM   #13
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Originally Posted by Jim_HiTek View Post
Silicone isn't recommended but there have been reports of people calling Winnie and them saying that silicon is fine. Generally, though pretty sure it's a no-no. You can call Winnie and get a PDF of the call outs of all the caulking products recommended for your RV and where they're used. Along with updated recommendations of type...which do change over time.


Personally, I didn't want to mess with any caulking on the roof edges myself, so I used 2" wide Eternabond tape. Hopefully, it'll last for years without need for repeated re-work. So far it looks perfect.


You might get some ideas by reading my blog post about roof work done on a '02 Winnebago Journey: Roof and Roof items... | Chaos Leaves Town
I agree with Jim_HiTek. You want to use the right sealant as there are lots of different roofing materials for RVs, I believe, even within the same manufacturer for the different lines. Do the job correctly the first time and save yourself from having to redo the job again in another year or two. Silicone is good stuff, but it may not adhere as well as you think and not stand up to the UV rays as well as other products. Winnebago web site will be able to tell you which sealant is best for the different areas on your rig.
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Old 10-11-2018, 04:26 AM   #14
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We have a '98 Chieftain &, of course, had the same problem. I used Eternabond Tape on roof seams & end caps 5 years ago & it still looks & seals great! Be sure to clean the seal area well & definitely use the surface prep spray Eternabond sells. Our RV in out in the hot FL sun all day & no problems. BTW, Eternabond was a great company to work with!
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