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Old 01-15-2011, 10:05 PM   #1
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Join Date: Dec 2010
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SUN #1732
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new-to-us 1991 T1661 has loose skin

We just purchsed a 1991 T1661 Sunline. It was very well cared for and we can't wait to use it. One minor issue is that the lower front outside aluminum skin is pulling away from the frame along the bottom and ithe skin is cracked where the frame comes through in front. Any suggestions on the best way to repair this? I'm thinking some long stainless steel screws and maybe covering this area with a diamond plate aluminum panel. Thoughts anyone?

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Old 01-16-2011, 06:26 PM   #2
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I can't help with your problem but wanted to say HI and welcome to the forum! Hope you enjoy your new to you Sunline!

I'm sure one of the guys will be along soon BUT I can suggest you take a photo and post it say so much more than typed words.....


Kathy & Leo SUN 093
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Old 01-16-2011, 10:50 PM   #3
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If the siding is pulled apart at the seam, there is a good chance that water has gotten in. Not a pretty thought, but things can be repaired. Before you try to screw the siding down, check the wall and floor for any discoloration, musty odor or soft spots (signs of wet, possibly rotted wood). If there is wood rot, the screws most likely won't hold and the rot can spread if still wet.

JohnB has gathered some helpful threads and posted them here:

Scoll down and read:
Restoring a Sunline

1. Repairing water damage on your Sunline.

Rebuilding my floor
Floor Repair part 2
2363 Water Leak Repair
Leak Repair Advice
Found water in storage compartment, what caulk to use?
1992 24' Sunline Solaris T-2490 Rebuild Pics
Serious Problem w/Floor.....need help
Pictures of our Sunline

Be sure that any repair is completely sealed with Eternabond to keep water out in the future.

As Poppy & Nana said, pictures go a long way in helping the guys help you.

Our Sunlines do require maintenance, and sometimes repairs, just like our sticks and bricks homes, but the joy we get from camping in them is worth it!
1997 Sunline Solaris T-2363, Leaf Green Interior
2004 Ford F-150 5.4L V8
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Old 01-17-2011, 03:24 PM   #4
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Hi M&M,

As Dona said, it's very possible that you have wood rot, especially on a 1991 model. Yes, your idea of attaching some diamond plate with long screws may fix the problem, but only for a short time. If that wood is rotten behind there, it will continue to rot and the screw will only hold on for so long. Also, since that piece behind there is probably only 2-3" wide, you don't have much and it's very possible that it's all soft, and then you'll have just insulation behind that for another foot or so.

It won't be a real simple fix because quite a bit of the trailer rests on that piece, but as long as you have a jack or two, it shouldn't be too bad. I suspect you'll have to jack up the trailer framing just a little bit to allow you to get that rotted piece out (or install the new one). I'm not sure if you could flex the framing enough to do that, but you may be able to without having to break loose any of the walls.

One tip though, you will want to measure the size of the piece of wood before you get it out so you can cut a new piece accordingly. Chances are, you won't be lucky enough to remove it in one piece or anywhere close to it, so it might help you so it can all go right into the trash can as it comes out.

If you don't want to put that piece of aluminum back over when you're done, you can sub in diamond plate. The aluminum skin has what's called S-lock, which is basically a very thin shaped S bent into the bottom of each piece. This allows for the top of the next piece to slide right up in to provide a seal and strength. You should plan to have the corners bent over the edges of the trailer to overlap the metal though, it will provide more of a water tight seal. Either way you go though, you will want to seal the corners up with new putty tape (available at an RV dealer in a roll). Putty tape from 1991 will most certainly be cracked and dried up, so whatever you pull off, you should replace. Some people report that it's easier to put the roll of putty tape under a heat lamp or warm light first, to make it a little easier to work with and stick to the metal.

Good luck with your repair and let us know how it goes.

2007 T-286SR Cherry/Granola, #6236, original owner, current mileage: 9473.8 (as of 6/18/21)
1997 T-2653 Blue Denim, #5471
1979 12 1/2' MC, Beige & Avocado, #4639
Past Sunlines: '97 T-2653 #5089, '94 T-2251, '86 T-1550, '94 T-2363, '98 T-270SR
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