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Old 11-26-2019, 07:47 PM
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Tub armor -- what to use to protect the paint underneath?

I've finally got a set of JCR Crusader rock sliders on order. Very excited, but also thinking about the install.

I'm considering using Plasti Dip on the backside of the tub armor as a "soft" layer between the armor and the paint. An alternative might be some clear vinyl on the paint -- which I assume would actually be better since it will be bonded to the paint itself.

Am I over thinking this?

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Old 11-28-2019, 02:34 PM
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bump, hoping for some input.

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Old 11-28-2019, 04:00 PM   #3
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What do the instructions say?W hy are you concerned about the paint? It will be covered up. If you plan on taking them off, then what about the holes you drilled?



I would just wipe down the surface and slap them on.
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Old 11-28-2019, 07:06 PM
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I fully get that I will likely never take this off other than for some kind of maintenance, like having them repainted. But, seems like protecting the paint would be prudent anyways and help prevent anything bad from developing, like rust. I have yet to see anyone suggest doing something with the paint underneath, so maybe that is a good indicator that it isn't needed.

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Old 11-28-2019, 09:15 PM   #5
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I had JCR quarter armor on my old XJ. I wasn't so concerned with protecting the paint underneath but was worried about dirt, water and debris getting in between the two panels and creating a serious rust problem. After test fitting multiple times and painting the armor I decided to run a bead of black rtv sealant on the back side of the armor and do my final install cleaned the excess rtv that oozed out and called it done. I had it like that for a few years before I sold the jeep and never had an issue. I was planing to do something similar with my JKU when i have the chance to pick up some rocker armor but I really like your idea of clear vinyl on the paint. I would just make sure to use a heavy mil vinyl not the cheap stuff off of amazon.
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Old 11-29-2019, 01:06 AM   #6
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Originally Posted by darkstar06109 View Post
I had JCR quarter armor on my old XJ. I wasn't so concerned with protecting the paint underneath but was worried about dirt, water and debris getting in between the two panels and creating a serious rust problem. After test fitting multiple times and painting the armor I decided to run a bead of black rtv sealant on the back side of the armor and do my final install cleaned the excess rtv that oozed out and called it done. I had it like that for a few years before I sold the jeep and never had an issue. I was planing to do something similar with my JKU when i have the chance to pick up some rocker armor but I really like your idea of clear vinyl on the paint. I would just make sure to use a heavy mil vinyl not the cheap stuff off of amazon.
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Old 11-29-2019, 10:51 AM
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The dust, sand, grains of dirt, etc, where I live get into every void or exposed crack. Like what you said, I imagine that it will get in there and slowly work away at the paint and eventually rust. I also considered using some RTV on the top and leading edge to help prevent things from migrating inside.

I'll keeping mulling it over and let you know what I decide to do.

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Old 11-29-2019, 11:05 AM
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Thinking about using the product linked below. It is supposed to be 8 mil thick and is a 3M brand, so it should hold up well. I'd need 2 of them to get the coverage I need on my JKUR.

https://www.amazon.com/dp/B004VFYCZE..._t2_B07F3DW4TQ
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Old 11-30-2019, 12:33 AM   #9
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Here in Connecticut they salt the hell out of the roads in winter that's why I decided to do all around but being where you are the top and leading edge should work fine. The only issue I had with the the RTV is I got a bit messy luckily it was a dark green XJ so it wasn't so noticeable. Not sure I would have the same luck on my bright silver JKU. I have used something similar to the 3M vinyl you linked on a Miata I used to have. I ended up using it around the windshield frame to dress it up a bit and to cover up some rock chips worked like a charm. The 3m is good stuff. If you decide to do the protective vinyl I would love to see the outcome. JCR is having their black friday sales so I may be ordering some this weekend.

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