I have another wood question. I know everybody recommends marine grade plywood for the floor. Problem is that it is expensive and hard to get. My brother who is getting into boating and bought a fixer upper boat was told to use regular plywood and treat it with Thompsons Water Seal. My question is has anyone done that in a T and does fiberglass stick to the Thompsons. I plan to coat the bottom of the floor with bed liner after it is in the car so I am not sure I HAVE to use marine grade ply. As always I appreciate the knowledge on the site.
I need help with my wood
- Thread starter gotmark73
- Start date
2old2fast
Active Member
To the best of my knowledge , marine plywood has more ply's & less voids making it structually stronger , as far as the adhesive used, it's supposed to be waterPROOF as opposed to water resistant. That being said , it's your call what to use. keep in mind that resin & glass crack & delaminate from wood subsrtates over time !
dave
dave
It doesn't matter what type of glue you use making plywood, if exposed to water the wood fibers themselves will swell and separate. Marine plywoods do have more plies, but you can also get multi-ply interior or exterior plywood that is not marine rated, and it should be cheaper. We use 9 ply 1/2" interior grade plywood all the time, although not for T-bucket floors. Nevertheless, I would think 5/8" or 3/4" CDX or any other 5 ply exterior plywood would work just fine. Just cover it with something that will keep water out. Resin and fiberglass come to mind or do like BenT did. Secondly, I would be really surprised if you could cover the stuff with Thompsons and then get resin to stick to it.
guilld
Active Member
Look on the Boat building sites I think they have glassing wood down to a science. I sincerely doubt
1. If you do some water proofing on the wood.
2. If you put a drain hole in the floor
3. If you do not allow wet carpet to lay on the floor indefinitely
that you will have any problems. How many times do you think you will be caught in the rain? I built houses for 17 years and if you want something as thick as 3/4" there is product that is unbelievable. Advantech sub flooring is the only sub floor I ever used that would not swell at the joints when rained on repeatedly. However it is a chip board and not ply. I think either one would work fine.
1. If you do some water proofing on the wood.
2. If you put a drain hole in the floor
3. If you do not allow wet carpet to lay on the floor indefinitely
that you will have any problems. How many times do you think you will be caught in the rain? I built houses for 17 years and if you want something as thick as 3/4" there is product that is unbelievable. Advantech sub flooring is the only sub floor I ever used that would not swell at the joints when rained on repeatedly. However it is a chip board and not ply. I think either one would work fine.
donsrods
Member
I do exactly what Ron says, just go to Home Depot and get some exterior grade plywood and glass it on both sides. I also coat the edges of the plywood with resin first to seal them so moisture can't get in. The floor in my 27 is over 20 years old and is as good today as the day I did it. As long as you completely encapsulate it it will be that way forever.
Don
Don
LMAOWhen I saw the title of this thread I thought he was gonna ask about the little blue pill.
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