Tom&Shelly wrote:Andrew Herrick wrote:I'll post a follow-up review later (maybe video?), but I just finished applying Monstaliner to the sides of a little project camper (4x7x4). I used three coats of clear gloss polyurethane + three coats rolled Monstaliner. So far, I'm really impressed. Looks great!
Hi Andrew,
So, re-reading this thread, I'm confused: Did you put the polyurethane on bare wood or over epoxy?
One reason I'm considering epoxy and fiberglass are comments on the forum about bent plywood wanting to form micro-cracks, and that the fiberglass strengthens (and epoxy waterproofs) the wood. But I guess others have not used fiberglass (or PMF) and have been fine.
Until you posted that Monstaliner says not to put their product on epoxy, I was thinking I'd fiberglass and then use their product instead of paint. But maybe the fiberglassing isn't necessary?
Anyway, thank you for trying this! Can't wait for the pictures and/or video!
Tom
Tom,
I put three coats of polyurethane over bare wood. I did not use epoxy. I didn't want to deal with any adhesion issues - particuarly my first go-around - and I came to the conclusion that three coats of oil-based polyurethane + two-to-three coats of Monstaliner was sufficient to waterproof the wood. This camper was very small, with solid plywood walls, so I would gain no useable strength by fiberglassing.
With that said, I believe there may be room for improvement? Here is some options, all of which are currently untested to my knowledge:
1. Fiberglass the exterior with marine epoxy, and then apply sufficient polyurethane over the epoxy to guarantee chemical isolation between the epoxy and the Monstaliner.
2. It is possible that CPES, having different resin chemistry than most marine epoxies, would not have the same issue. At this point, I have no idea!
3. As recommended by Monstaliner, you could also use Chassis Saver as a primer for Monstaliner. Perhaps Chassis Saver can be painted onto epoxy/fiberglass?
4. Lastly, Monstaliner is made by Magnet Paints, which also sells a 2k industrial-grade epoxy primer. Again, it might be possible to coat fiberglass with this epoxy primer, and then apply Monstaliner directly over it, and or else coat the epoxy primer with Chassis Saver, followed by Monstaliner. I have to say ... this option sounds very expensive and time-consuming though!
Again, I haven't tried any of these ideas, and I have no idea if they will work. I'll probably bug Monstaliner with some more questions