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Old 07-25-2014, 08:03 AM   #11
jujupang
 
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Default Re: Restoring Exterior Plastic Body Panels

Discus,
Thank you, did you see my post about Westy Fest VII over the Labor Day weekend? It's the biggest group, between 12 and 17 Westies show up and it's on the east coast.
Juju
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Old 07-25-2014, 04:55 PM   #12
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Yes. I will keep an eye on it. Thanks


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Old 11-02-2017, 04:12 AM   #13
Fredb
 
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Default Re: Restoring Exterior Plastic Body Panels

Read this thread with great interest and would love to fix the cracks in my side and rear

In your description you stated that you the product you used was 'Lexis Graphyte'.

Just checked out their site and doesn't look like they carry that product any more... or I can't seem to find it and so am wondering if you have any tips on what properties I'd be looking for as an alternative.

https://lexiscoatings.com/products

Water based vs. solvent based
Level of elongation - %
Solids - %

Other question for you is that I noted in the photo's you shrouded the entire vehicle. Guess I was surprised you needed to go to such lengths and so am curious whether there's something specific about the process (and associated risks) or whether it is a testament to how thorough you are.

Thanks in advance for any help you can provide.


-Fred
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Old 11-02-2017, 01:47 PM   #14
Kiltym
 
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Default Re: Restoring Exterior Plastic Body Panels

We are looking to repair our side panel as well.

Wondering if a rubberized paint like this would work OK: https://www.flexsealproducts.com/product/flex-seal/

I am going to use a good quality paintable caulk to fill the cracks as that will allow some flex as well as I am not expecting the paint above to fill the cracks. Seems a "hard" crack filler would just crack again from flex.

Any thoughts on this type of paint?

The only other rubberized paint I have found is the Plasti-Dip stuff. But it is designed to be removable, which is not really necessary and concerns me a bit with regards to longevity.
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Old 11-02-2017, 05:21 PM   #15
Pnwsquid
 
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Default Re: Restoring Exterior Plastic Body Panels

Quote:
Originally Posted by Kiltym View Post
We are looking to repair our side panel as well.

Wondering if a rubberized paint like this would work OK: https://www.flexsealproducts.com/product/flex-seal/

I am going to use a good quality paintable caulk to fill the cracks as that will allow some flex as well as I am not expecting the paint above to fill the cracks. Seems a "hard" crack filler would just crack again from flex.

Any thoughts on this type of paint?

The only other rubberized paint I have found is the Plasti-Dip stuff. But it is designed to be removable, which is not really necessary and concerns me a bit with regards to longevity.
I seriously doubt it's going to work. The amount of expansion/contraction I've seen is significant. Even on a cooler day, my half inch cracks would tightly press together with direct sun exposure.

I think you need to use something that offers rigid and permanent structure like fiberglass repair. Discuss has it right IMO. Event a permanent sealant/adhesive like 3M 5200 allows for enough flex to disrupt the top layer of rubberized paint I would bet.
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Old 11-02-2017, 07:32 PM   #16
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Default Re: Restoring Exterior Plastic Body Panels

1/2" cracks? Wow, I don't have anything close to that severe on my panel. And have been in everything from 28F to 100F at this point.

The reason I was thinking caulk, and not something like epoxy/fiberglass, is that it can then continue to flex as needed. But certainly a 1/2" gap with caulk would not work, I agree. The most ours are < 1/4", which caulk should handle OK.

I would think filling the cracks with epoxy (and fiberglass), would either crack again, or allow the panel to crack somewhere else. But I perhaps I am not understanding why/how the panel cracks in the first place. I assume the majority is body flex in the van, not temperature. Perhaps it is a wrong assumption.

And my idea of the paint is that the paint would be able to flex a bit also, but I have no experience with the stuff I posted so am curious what opinions exist. I have looked for various "rubber" paints, and that was the closest I found so far.
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Old 11-03-2017, 07:54 PM   #17
Kiltym
 
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Default Re: Restoring Exterior Plastic Body Panels

Just some more research passing along.

Also found this product, which seems to have pretty positive reviews: https://www.semproducts.com/product/...osols/aerosols

Does anyone know the type of plastic the panel is? I am not familiar with plastics types, they are all plastic to me :). Would help to assure compatibility while I continue to research DIY options.
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Old 11-04-2017, 03:31 AM   #18
Mike DZ
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Default Re: Restoring Exterior Plastic Body Panels

Not familiar with the "plastic" used for Westy(s), but I have used Methyl methacrylate (MMA) adhesives for automotive plastics repair with some success. If you are not familiar with MMAs think epoxy mixed with superglue. These are heavily used throughout industry and have different varieties for different materials. Matching the MMA to the material is very important to a good bond, so some research would be required.
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Old 11-04-2017, 03:44 PM   #19
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Default Re: Restoring Exterior Plastic Body Panels

You need a 2 component polyurethane bed liner material. The rattle can stuff won’t work at all. Try to find a Bullet Liner or Line-X dealer near you. They are the better ones. You can also try Rhino Linings.

The crack needs to be fixed. Fiberglass repair is good. The bedliner needs to be thick like what they do with pick up trucks. It can be a little thinner but at least 1/4” thick.


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Old 11-04-2017, 05:13 PM   #20
Kiltym
 
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Default Re: Restoring Exterior Plastic Body Panels

discus,

Just curious, you posted using SEM Bumper Coater on bumpers and rear wheel trim. You seem fairly confident something like this would not work on the panels.....

Wondering why? Because of thickness of material, is that "key" to keeping it from cracking again? If the cracks are filled with something like caulk that can expand/contract, and the paint is flexible. it seems it would work (but I really have no idea!). But a few comments here imply it wont because of the contraction/expansion due to heat.

In your case, using the filler, filled the cracks, but it seems you are relying on the bedliner to eliminate the contraction/expansion going forward, otherwise the filler would just crack over time, I assume. Or is the adhesive you used "flexible" like a caulk?

Spending $400-$500 to have it sprayed with bed liner is bit out of my budget for plastic trim, although I am sure it works well.

Appreciate everyone's input.
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