sealing plywood boats

[twintrades]

OK i made a duck boat last week and i forgot to keep some money for fiberglass........


I have enuf to glass the seams With poly resin

What or how can i seal the wood ??? Can i use spar urithane and paint over that ?? Or if some one out there has a sugestion id love to hear it !

 

[ondarvr]

Re: sealing plywood boats

How long do you want it to last?

Epoxy and light cloth is what you need for it to last for good period of time.
Polyester isn't that good at coating wood boats, it doesn't like to stay in place long term.

 

[tashasdaddy]

Re: sealing plywood boats

in the old days, we ran and band of glass on the seems, and then painted 3 coats of oil base paint. boat lasted 12 years, with not maintenance, other than a water hose.

 

[twintrades]

Re: sealing plywood boats

Thats what i was looking for. I dont have more than 10 hrs build time in on it. And less than 50 bucks. So long as she floats, runs straight and lasts a few yrs.

 

[Chris1956]

Re: sealing plywood boats

I would glass the seams with poly resin and fiberglass tape, otherwise it will leak. Fill and voids with some non- oil based putty, so the fiberglass has something to adhere to. The balance of the raw plywood may be painted with poly resin or spar urethane. The poly resin is a bit better, and should be about the same price as the urethane. You can put paint over the poly or urethane, for appearance.

 

[ondarvr]

Re: sealing plywood boats

If you only want it to last for a short time then using polyester and glass on the seams is OK, but don't use it on the rest of the boat. Polyester without glass is very brittle, so it will start to crack soon after you start using the boat, paint is a much better option. If at all possible use epoxy, it will work much better in this type of application.