Sealing plywood

[Chuck Gibson]

About eight or nine years ago I was replacing the seats in my aluminum boat. They were all just plywood pieces bolted down to the frame. One of you guys came up with a mixture that consisted of two or three parts. I believe it was equal parts of boiled linseed oil and mineral spirits...There may have been one more item perhaps oil based polyurethane mixed in with it. I can't find that mixture on here. Do any of you guys have it or any suggestions as to what I should use?
Thanks in advance,
Chuck

 

[Chuck Gibson]

Never Mind. I found it. It was the "Old Timers Wood Sealer Formula".
Thanks again!
Chuck

 

[Chris1956]

You might consider using a "New Timers Wood Sealing Formula". Boiled linseed oil was used in the 40's and 50's to stain and seal cedar siding. It is obsolete, as much better stains and sealers exist now.

Polyurethane resin is much better. It will seal the plywood quite well. Oil based "spar" polyurethane is also much better than the old timers stuff.

 

[Woodonglass]

For Aluminum boats with exposed wood in the seats and or transoms, The Old Timers Recipie IS STILL a very effective sealant IF the boat is stored properly and maintained. EPOXY IS the best protectant and sealant but a bit pricey AND it is not UV tolerant. Just because it's an OLD formula does it make it any less effective. I've use it for over 50 years and NEVER had it fail. I have USED the newer sealants and honestly never found one to be any more effective than the Old Timers. It DOES require maintenance but no more or less than any of the so call Modern ones. But I AM just and Old Dumb Okie so there's that to consider!!!:facepalm:

 

[Scott Danforth]

You might consider using a "New Timers Wood Sealing Formula". Boiled linseed oil was used in the 40's and 50's to stain and seal cedar siding. It is obsolete, as much better stains and sealers exist now.

Polyurethane resin is much better. It will seal the plywood quite well. Oil based "spar" polyurethane is also much better than the old timers stuff.

resin will crack, then the wood will rot and the resin falls off. resin needs glass. since the OTWSF also has spar varnish in the mix, it does two things, it penetrates the wood, and it seals the surface.

 

[GSX455]

Woodonglass,
Thank you for helping choose epoxy to seal my wood, I added a UV protectant, you can order from Eastwood.
How many coats of epoxy should I use to seal marine plywood?
I plan to use vinyl ester to tab the stringer, since VE is epoxy polymer with ester at the ends.

Thank you again.
GSX455