I’m about to start swapping unrecoverable teal with meranti ply. My plan is to paint the ply to reduce the need to varnish. Yes I’m lazy.
We’ve all said “coat with epoxy” then paint.
So I’m out in the shed to get my list of needed supplies and I pick up a can of s3 primer. Epoxy primer. As in the stuff we use to seal the ply.
So the question is, other than maybe as fairing compound, do I need to net coat or is s3 primer adequate?
For forks sake, I’ve edited this 4 times to fix the title. I need help.
Epoxy covering ply for painted finish
- Jaysen
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Epoxy covering ply for painted finish
Re: Epoxy covering ply for painted finish
I don't know. Not sure if that helps.Jaysen wrote: ↑Thu Apr 01, 2021 12:46 pm I’m about to start swapping unrecoverable teal with meranti ply. My plan is to paint the ply to reduce the need to varnish. Yes I’m lazy.
We’ve all said “coat with epoxy” then paint.
So I’m out in the shed to get my list of needed supplies and I pick up a can of s3 primer. Epoxy primer. As in the stuff we use to seal the ply.
So the question is, other than maybe as fairing compound, do I need to net coat or is s3 primer adequate?
For forks sake, I’ve edited this 4 times to fix the title. I need help.
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- Jaysen
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Re: Epoxy covering ply for painted finish
Well ... kind of. At least in the sense of confirming that it’s a real unknown.
Re: Epoxy covering ply for painted finish
Jaysen,
IMHO, I like to coat everything in a marine environment with 2 light coats of epoxy. This ensures that the wood stays sealed no matter if the paint and primer wear down over time. As I'm sure you have noticed, epoxy is a lot harder to sand through than the System Three Primer (or any primer for that matter). Reason being, epoxy is mechanically stronger than the primer. Yes, the Yacht Primer by System Three is an epoxy based primer but it is still not as strong as normal laminating epoxy. The primer gives the paint a good smooth surface for the paint to adhere to. It also gives the builder a surface to sand and make smooth prior to paint while not compromising the epoxy or fiberglass underneath.
Could you get away without applying epoxy, maybe... but why not ensure that the wood is sealed for good.
-reid
IMHO, I like to coat everything in a marine environment with 2 light coats of epoxy. This ensures that the wood stays sealed no matter if the paint and primer wear down over time. As I'm sure you have noticed, epoxy is a lot harder to sand through than the System Three Primer (or any primer for that matter). Reason being, epoxy is mechanically stronger than the primer. Yes, the Yacht Primer by System Three is an epoxy based primer but it is still not as strong as normal laminating epoxy. The primer gives the paint a good smooth surface for the paint to adhere to. It also gives the builder a surface to sand and make smooth prior to paint while not compromising the epoxy or fiberglass underneath.
Could you get away without applying epoxy, maybe... but why not ensure that the wood is sealed for good.
-reid
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Re: Epoxy covering ply for painted finish
I agree with Reid. Often primer is modified to make it easier to sand. I can't imagine that this helps waterproofness or strength. If it was always above the waterline it might not matter but why not coat it anyway?
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Re: Epoxy covering ply for painted finish
Marinepoxy coat first it is.
OneWayTraffic... in my case the answer to that question is “wife”. That and I’d need to get some clear 2 part vs using up my leftover stuff I have here. Which is really back to the first answer I gave.
OneWayTraffic... in my case the answer to that question is “wife”. That and I’d need to get some clear 2 part vs using up my leftover stuff I have here. Which is really back to the first answer I gave.
Re: Epoxy covering ply for painted finish
>> unrecoverable teal <<
Is that kind of like avocado green from the '60's?
Is that kind of like avocado green from the '60's?
- Jaysen
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Re: Epoxy covering ply for painted finish
Yes. The boat is a ‘79 and it has all those wonderful colors from my childhood. Even the teak that is being replaced by ply has the tie died feeling of one too many deadhead trips.
If I go back and fix all the issues with that first post it would still be a draft.
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Re: Epoxy covering ply for painted finish
Meranti or okume ply sealed in epoxy and then covered with a uv protection is gorgeous. Varnish is cheap, but will require sanding and refinishing about every other year. Clear EMC Quantum has held up for me for almost 4 years now on an outdoor bar and the epoxy is still clear underneath. More work and cost than painting, but having the bright work is nice, and cheaper and less maintenance than teak. My 1.5 cents.
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