Where can I find marine grade plywood

[coombro]

Just remember a boat is "A hole in the water you sink your money in".

[Hlleonard]

The only solid decision I have made as of today is the stainless hardware, I ordered that this morning, and probably am not going to use the treated material, just seems to be too much uncertainty with the PT... I might just use standard exterior glue plywood and seal it with something, the worst that can happen is I have to replace it down the road somewhere and it only took me about 4 or 5 hours to tear the thing down this time, mostly by myself and I expect it will go back in a day maybe so right now I'm leaning toward that option.

Stratos...If I can ask, do you know what the difference is in marine grade and regular exterior grade other than the glue used and the density of it?

[rooster]

advantech 3/4 ". It is made with the same kind of glue as gorrilla glue and is rated for 20 years outside. It is a lot cheaper than marine grade and will last as long.

[Hlleonard]

advantech 3/4 ". It is made with the same kind of glue as gorrilla glue and is rated for 20 years outside. It is a lot cheaper than marine grade and will last as long.

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Would you know where I might find it?.. never heard that I don't think.

[rooster]

any lumber yard will have it. It is toungue and groove so you will lose 1/2" with every sheet. It is used as sub flooring in damp areas on basements and floors.

[Hlleonard]

any lumber yard will have it. It is toungue and groove so you will lose 1/2" with every sheet. It is used as sub flooring in damp areas on basements and floors.

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OK....thanks

[KyPit71]

Ditto Rooster on the advantech,GOOD Stuff!

[roadrunner]

I manufacture aluminum windows and we use 410 stainless steel screws with no problems. You can have a problem with the glue and aluminum I know a couple of companies that used particle board in there storm doors and glued an aluminum skin to the particle board on both side and the aluminum just turned to a white powder and disenegrated. I am sure you will not have a problem with the marine grade plywood as many people have done this and I don't know of any problems.

[Brandon__]

i used regular plywood with spar urethane over it and it works awesome in my aluminum boat. i was going to go with pressure treated but it has a reaction with aluminum so that might not be the best choice

[Hlleonard]

i used regular plywood with spar urethane over it and it works awesome in my aluminum boat. i was going to go with pressure treated but it has a reaction with aluminum so that might not be the best choice

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I have just about come full circle with this project... I do believe pressure treated is the product to use for this, the stuff seems to last forever, I had decided against using it yesterday but after digging around the internet most of the day today trying to educate myself about the long term of sealers and the the cost and process of dealing with toxic sealers, I have decided I don't wish to deal with that stuff... It seems the deck sealers such as Thompsons need to be reapplied every few years and that's not an option with this project, I have decided to use the PT plywood and install a barrier of some kind to insulate the aluminum from the plywood... I am thinking that just some strips of outdoor carpet with the rubber backing will do the job, haven't really decided what I will use as a barrier yet, there are probably a number of things that would work, a 4x8 sheet of plexiglass ripped in strips probably would work and it's $50 vs a couple hundred for the sealer I would need to seal the marine grade plywood... This problem being around for 7 or 8 years you would think some company would be selling plastic or rubber stripping specifically for this.

[18'stratos]

Good luck and have fun doing the renovation. When I owned a Jon boat, I also rebuilt it. It was a great winter project to keep me busy. Cabin Fever season is coming soon and you got your remedy already. Post some pics later on the progress.

[Hlleonard]

Good luck and have fun doing the renovation. When I owned a Jon boat, I also rebuilt it. It was a great winter project to keep me busy. Cabin Fever season is coming soon and you got your remedy already. Post some pics later on the progress.

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lol,Thanks... I'm not sure anybody wants to see any pics of this old rag, bought it earlier this year just as a fishing platform, it's like a 20 foot flat rock to stand on or throw a lawn chair down some place, I even took the captains chair out of it because it was in the way and I use a stool to drive the thing with, the stool also serves as an ottoman if I decide to kick my feet up... Other than the better half wanting to take her nieces and nephews swimming once in a while and making the thing just look silly I might even leave the fence off... The only seats I left on it were the fishing seats up on the front... Pontoons just aren't made to fish from and other than my lust for a fishing pole I wouldn't own a boat... I would like to thank you and the other fellas for all the information they shared about the ins and outs of the of the materials to do this with, I put some load guides on it earlier this year and now thanks to you guys I have to go back and replace them because they are pressure treated..