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Old 10-02-2011, 04:38 PM   #1
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Advice on glues

I have gotten wonderful advice on many questions in this forum. However, Iam currently in the process of rebuilding inner wall to outer skin to eliminate large section of delamination. Need positive advice on glues. See many ideas here, but nothing really positive. Need glue for Filon to luan, Need glue for Luan to foam. Need expert advice, as so many people offer ideas that seem unproven.
Southwest Florida
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Old 10-02-2011, 10:42 PM   #2
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Originally Posted by Free Bird View Post
I have gotten wonderful advice on many questions in this forum. However, Iam currently in the process of rebuilding inner wall to outer skin to eliminate large section of delamination. Need positive advice on glues. See many ideas here, but nothing really positive. Need glue for Filon to luan, Need glue for Luan to foam. Need expert advice, as so many people offer ideas that seem unproven.
Southwest Florida
Some kind of contact cement would be your best bet since it would be difficult to impossible to clamp the glued area. What kind depends on many things. If regluing Filon to the original luan, a heavy bodied cement would be needed. If gluing new Filon to new luan, almost any kind of contact cement could be used.

Luan to foam would require a contact cement designed for use with foam to avoid having the solvents in the cement disolving the surface of the foam. Usually foam compatible contact cements are water based.

Applying contact cements require that the cement coated mating surfaces be kept separated until completely dry. Initial alignment is critical since once the surfaces contact each other, they are pretty much stuck for keeps.

Partially delamination would be much trickier. If only a small portion of the surface is still adhering, it would be better to carefully separate them, then reglue the entire piece.

I do not know what would work well with just small areas because of the difficulty clamping them. Contact cements would not work well here.
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Old 10-02-2011, 11:45 PM   #3
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Old 10-03-2011, 10:07 AM   #4
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Would it be possible for you to post photos of where you are working? Based on your PM, a mastic type adhesive, such as Liquid Nails, or a marine adhesive sealer, like 3M 5200, might work better.
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Old 10-03-2011, 04:01 PM   #5
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X2 on the 3M 5200 Marine Adhesive. LadyFitz beat me to that. You can get it in tubes for your caulking gun for around $25/tube--fast dry and extra strong hold and waterproof.
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Old 10-03-2011, 06:19 PM   #6
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This site contains lots of suggestions, possibly something will help.

This to That (Glue Advice)

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Old 10-03-2011, 09:17 PM   #7
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X3 on the 5200. The regular formula is a slow drying and it would need to be clamped while it was drying. There is a fast acting which still takes a fairly long drying time.

Might consider one of the Gorilla glues Gorilla Glue - Home
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Old 10-07-2011, 05:58 PM   #8
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Rebuilding delaminated wall on class A MH

Well, except for applying wall paper on interior, I am done. Re-did a section under left side window behind sofa. Section ended up being 54" long by 36" high. Resulted from previous owner's use of Latex caulk to seal window. Never works and makes a mess. Luckily, most of Filon was seperated from Luan and was easy to remove except for a few spots which I peeled off or sanded. Found out the hard way that Liquid Nails is definitely a No-No, WON'T STICK. Wound up using contact cement, which worked great, Glued new 3/8 plywood backing to Filon and then using new styrofoam which came with foil backing and made it easy to contact cement to plywood. Thanks for all your help!!!!
Lessons learned:
1. use contact cement only.
2. adhere Filon to plywood before making fast inside.
3. save Liquid nails for home use.
4. Never Never use any caulking material except ProFlex RV around windows.
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Old 10-11-2011, 12:12 PM   #9
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I have done the passenger side of my 34 ft. pace arrow,(two years ago) the whole side was delamanated the first contact cement that I used ate the foam insulation, I had to change contact cement but it was not as good as the first cement that I used, there are a few places that are not sticking well, but for the biggest part all is doing ok as I had to do the whole side. I have done a few other tt & rvs and contact cement is all that I have used..
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