Marine Grade Plywood

[BassinVt1]

Anyone got any ideas or what to use in its replacement for marine grade plywood in the Burlington,Vt area?? I can order it at around $100.00 a sheet and take 14-21 days to get. Any other ideas.

Thanks

tim

 

[lowkee]

Re: Marine Grade Plywood

I would advise to use the search on here, as there are countless discussions on alternatives and peoples' opinions on them. Most are very good reads.

 

[dodge man]

Re: Marine Grade Plywood

just use pressure treated plywood it will last about as long and you can get it at youre local lumber store for about $25 dollars each for 3/4"

 

[CheapboatKev]

Re: Marine Grade Plywood

Hey Bassin
Welcome to the nuthouse we cal home

What are ya building? A deck I assume?
Fiberglass or Alum boat?

Alum = No PT Wood

And honestly..Do not be mislead that UNTREATED PT wood will never warp or rot...it will

Probably exterior grade ply for 8 to 11 bux a sheet will be more than fine..
But whether (do to weather) or not you use PT or plain old ply..you have to SEAL it.
That means resin & glass, top bottom sides..
You can search here on step by step instructions on how others have done this.

I personally redid my deck, I did not seal properly..Used a chem sealer then painted rustoleum..Well I have a spot that didnt seal well and have a issue with a small area of my deck..Not major, but I took a shortcut and now regret it

 

[Floyd M]

Re: Marine Grade Plywood

Hey Bassin,
I would stay away from the pressure treated as well. If you use something other than marine grade I would stick with true Exterior grade plywood. You have to be careful though because much wood is labeled exterior but it is Exposure 1 grade. An example of this is the local Lowes has ACX plywood labeled for exterior. It is actually Exposure 1 grade though and not as good as true Exterior.

Hope this helps.

Keith

 

[bigredinohio]

Re: Marine Grade Plywood

Not sure if this is true but I thought I read somewhere that resin has a hard time adhering to pt wood?

IMO, regular exterior grade plywood glassed with (epoxy) resin seems to be the best choice.

 

[JimbC]

Re: Marine Grade Plywood

Well I have posted this a few times. I am guessing no one here is interested in basically a deck and transom that will last a life time no matter how many screw holes you put in it. But this is a product that I would check into if I were decking or replacing a transom. I have spoke with them and they say they can also make it to just about any size and thickness I need. I was quoted a 4X8x1/2'' sheet for $148.00 to me that is not bad price for something that will last a life time. No wood to rot. They also have a product that is already wrapped in fiberglass. and some boat mfgs are using it for floors and transoms.
Check it out here and give them a call.
http://www.nyloboard.com/HOME/tabid/36/Default.aspx

 

[sschefer]

Re: Marine Grade Plywood

Nyloboard is and excellent product to use. I wish I would have known about it when I did mine. An alternative is Super Ply which I did use on my transom. It's available through Roseburg lumber Co. It's the only sheet product out there that uses a waterproof resin glue. That still doesn't stop the wood from rotting over time but it keeps moisture from delaminating it.

FYI there is a now an aluminum safe pressure treated ply out there. I don't remember the name of it off hand.

 

[Les Robb]

Re: Marine Grade Plywood

That nylon board sound like the same thing a local company cuts decorative designs etc out of. How does say indoor outdoor carpet cement stick to it. I'm not trying to steal the thread just hope this adds another outlook.

Good luck & restoration ya'll

 

[fishrdan]

Re: Marine Grade Plywood

How does say indoor outdoor carpet cement stick to it.

Should stick really well since the Nyloboard is made out of recycled carpet. LOL Really. I don't know.

To the original question, what were you going to use the marine ply for, transom, deck, other?

 

[JimbC]

Re: Marine Grade Plywood

OOOOPS!! edit that quoted size and price the quote was a 4x12x1/2" sheet for $148.00

 

[Porshaah]

Re: Marine Grade Plywood

FYI

All exterior grade Canadian made plywood use waterproof plastic resins. So if you see "Made in Canada" stamped on the edge and it's exterior grade, you can be assured it is waterproof and won't delaminate if it gets wet. Pressure treated plywood's treatment is mostly to ward off termites.

Bill
79 Glastron CV16

 

[Bob_VT]

Re: Marine Grade Plywood

Head over to HD or Lowes and get some exterior 3/4" plywood. You will be coating and sealing the wood and your boat was not built with marine plywood in the beginning. IMO unless it was "brand new" wood boat construction I would save my cash and go with a quality exterior plywood.

Yes, PT is good however it is usually more moisture laden when you purchase it which makes it resist resins (regardless of poly or epoxy) until it has been properly dried for quite some time. The PT aspect is to prevent bugs and will eat most fastener's used on it.

Now FYI Whitehall Plywood in Whitehall NY is having a cash only plywood sale on the 14-16th (this coming week). Give them a call and ask what type of wood they are selling. You might be able to score some good wood at a good price. It's Cash and carry.

 

[BassinVt1]

Re: Marine Grade Plywood

Thats great with all the replys!! I did search for it, and found a lot of conflicting posts. Sometimes you just have to ask. If the boat was newer I would consider the composit expensive stuff, but I believe I can use the exterior grade and just seal it properly and probably never have another problem again in my lifetime.

Thank you all, and yes I am rebuilding the transom,floors and a new casting deck.