What to use to fix seams in a Trillium? - Fiberglass RV

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Old 07-16-2009, 12:08 PM   #1
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Trailer: Trillium
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i have bought a 76 trillium and the lower half of the walls is covered in this weird slightly squishy/soft insulation/stuff??? It is filthy but cleanable but the seams between the stuff don't have any cover and it looks awful. Is there some sort of white/cream tape or something to seal the seams of this stuff? I'm assuming it needs to be there so I don't want to go ripping it out, but I'm a rank newby and can't think what to do with this stuff. Any suggestions.

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Old 07-16-2009, 01:28 PM   #2
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Trailer: 1976 Trillium 13 ft
Posts: 983
Hi Mimi,

76 Trillium, good year! Can I ask what is on the upper half of your walls. It sounds like you have ensolite on the bottom half. Can you add a picture or two so we can see what you are facing?

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Old 08-05-2009, 01:58 PM   #3
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Name: Donna D
Trailer: Escape 5.0 TA, 2014
Posts: 23,914
Split this out of another posters question.

Anyone have info for Mimi?
Donna D.
Ten Forward - 2014 Escape 5.0 TA
Double Yolk - 1988 16' Scamp Deluxe
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Old 08-05-2009, 05:50 PM   #4
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Name: Rachel
Trailer: 1974 Boler 13 ft (Neonex/Winnipeg)
Posts: 3,014
We would need to see a photo to say for sure, but it sounds like you've got the usual Ensolite on the bottom, and something modified on the upper half (normally they are 100% Ensolite).

As far as the seams go, I'm guessing you have something that looks like a grooved, plastic "rail" on the walls running along behind your seams. From the factory, there was a plastic, T-shaped molding strip that "clicked" into that and then the top of the T covered the seam (the top is something like 3/4" across).

As far as I know, no-one has sourced that exact molding, although people have modified a product known as "T-molding" to make it work. I think that the center "leg" on the currently available T-molding is longer than what was originally on the Trilliums.

This photo will give you the idea of the T molding - just pretend the flat wooden panels are the Ensolite walls:

Name:   pergotmoldpro.jpg
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Some T-molding can be found at www.t-molding.com (smooth molding); but maybe the original profile exists if one were to search "t molding" on Google (and if one had a piece of the original or the measurements to compare to - I don't).

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