Quote:
Originally Posted by JRTJH
Would you apply a roll of masking tape to your drywall then paint over the masking tape??? No matter how good the top coat adheres to the masking tape, your coating will fail when the adhesive in the masking tape fails. It doesn't matter that the paint "is stuck like glue to the tape, when the tape falls off the drywall, the coating falls off the wall and is gone.
If you apply any "coating" on top of the DARCO, that's exactly what you're doing. No matter how well you "cover the DARCO" it is not attached "permanently" to the underlying wood, so there is a good chance that the DARCO will pull away from the wood. That void between the DARCO and the wood will be your problem, not the "permanence of the top coat".
Stapling it in place, doubling the thickness by adding DARCO repair tape won't make it "stick to the wood any better" and it's nothing more than a "plastic tarp" very similar to what you can buy at Sam's Club for $19 for two. As the DARCO oils dry, it becomes brittle, starts to crack and fall away from the underlying wood. You can't change that by coating the DARCO with anything "permanent". What you'll have is a "permanently attach expensive coating hanging from the DARCO that pulled away from the wood and cracked/split when it rubbed against the top of the tire in the wheelwell.
I wouldn't rely on a thin 5 mil plastic sheet as a base layer for anything, YMMV.
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John is on point. I don't know if those asking about Darco have any experience with it but...it is "stuck" on the bottom of your slide by an adhesive...that's it. A thin little layer of "plastic" stuck on by some sort of glue that actually comes "unglued" by itself. Trying to spray ANY kind of covering over it and thinking that it's going to just hang on needs some rethinking. Same with stapling it - that stuff can and will tear in a heartbeat; we're not dealing with some sort of space age Kevlar material. I've dealt with mine, repaired it etc. I couldn't in my wildest dreams entertain spraying an additional layer of "weatherproofing" on top of it having any expectations, at all, that it would continue to stay "stuck". Good luck if you try.
I have posted a link in the recent past to a provider that has hdpe in all sorts of lengths, widths etc. I am looking at buying a new Keystone 5th wheel; they all have Darco under the slides with wearbars (minus Montana). I am going to cover the entire bottom of the slides with this product (that have wearbars) with this product. There is no way to think it is a good way to do what they try to do with it.....but I like Keystone, their floorplans....and my dealer.