Belly Band repair - Fiberglass RV

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Old 05-13-2010, 03:17 PM   #1
Junior Member
Trailer: Trillium 13 ft
Posts: 5
When looking to find out why water was coming into my Trillium 1300, I took off the plastic part of the belly band. I found holes, rusted screws and rivets (see attached photo).

What would you do if you were in my situation? Is it normal to find all of this under the plastic of the belly band? I would rather keep the work as minimal as possible, but I want to make sure that I won’t have anymore water infiltration. The belly band seems to have been reworked by a previous owner since the butyl around it is not equal everywhere.
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Old 05-13-2010, 04:51 PM   #2
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Name: Jake
Trailer: Still looking
Posts: 219
Hi Johny:

I used to have a 73 Trillium in that lovely Pea Green, and loved it.

I had the same problem.

I removed ALL the caulking on the top of the belly band with a plastic V shaped
putty knife, steel wooled the entire belly band, and resealed with New Clear Caulk.

I also went around the trailer and removed and replaced any rusty or loose screws
with new 1 size larger Stainless steel screws, (actually, one by one, I replaced them all).
I then went and bought new rubber/ plastic molding/ belly band cover (that's hanging in your picture) as it is really cheap 10 cents a foot.
The entire process only took a day, and eliminated the leaking problem, and looked great!

I hope that helps?

Cheers, Jake.

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Old 05-13-2010, 04:54 PM   #3
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Joe MacDonald's Avatar
Trailer: Trillium
Posts: 762
if you are to do a 100% job, you will need to remove the metal band as well, drilling out the rivets as well.
then repair any of the damaged rivet tabs by glassing in new ones, then filling any holes, then re-rivet the band, then install new rubber trim. If you do a few searches using the search button near the top right side of the screen, you should find a few threads dealing with this issue, it has been a hot topic in the past.
The Trilliums did not originally have sealant on the belly band.
I'd post the links, but don't have time now, just spend some time searching the site, you'll find lots of answers.

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Old 05-14-2010, 06:54 AM   #4
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Name: Mike
Trailer: 1979 Trillium 13 ft
New Brunswick
Posts: 65
Have you looked at the windows as well. They are the #1 source of water getting in, running down behind the ensolite and puddling on the bottom. I just went through the same issues you have and also did the windows. I removed the screws and replaced with rivets and then epoxied the inside under the ensolite before putting everything back together but that is a more major job.
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Old 05-14-2010, 07:55 AM   #5
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Trailer: Trillium 13 ft
Posts: 5
<span style="font-size:10pt;line-height:100%">Someone suggested me to use polyurethane that is used for replacing car windshields. After filling in the holes, instead of re-riveting the metal band, I would glue it with polyurethane.

<span style="font-size:10pt;line-height:100%">Thank you very much for your help, your advices are greatly appreciated and very much needed</span>

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