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#12794553 - 06/16/18 08:14 PM Marine Grade Plywood
HillCountryReelRepair Offline
Outdoorsman

Registered: 03/12/18
Posts: 22
Loc: Liberty Hill, TX
Hey does anyone know where I can find marine grade plywood in the Austin area? Iím in the process of re-carpeting my boat and Iím thinking it might be easier to replace the deck instead of trying to get the old carpet off plus it could probably be replaced due to age. Thanks
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Hill Country Reel and Rod Repair
Liberty Hill TX
www.hillcountryreelrepair.com

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#12794681 - 06/16/18 10:07 PM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
Bobby Milam Online   content
TFF Team Angler

Registered: 07/13/14
Posts: 3581
Loc: Arlington
You actually don't have to use marine grade for anything that isn't below the water line with constant exposure. You can get good quality plywood and seal it if you want. The best plywood that I have found was going to an actual lumber yard, not the big box store. You'll pay about the same price but get much more for your money. Regardless of which type you use, seal all the edges and any holes that you have to cut in it.

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#12794750 - 06/17/18 12:40 AM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
HillCountryReelRepair Offline
Outdoorsman

Registered: 03/12/18
Posts: 22
Loc: Liberty Hill, TX
Any particular sealers you prefer?
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Hill Country Reel and Rod Repair
Liberty Hill TX
www.hillcountryreelrepair.com

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#12794753 - 06/17/18 12:50 AM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
Alumacraft 14 Offline
Angler

Registered: 02/24/06
Posts: 301
Loc: Texas
Marine grade wood is not water proof, has zero chemicals injected in it so it is not rot resistant.

It is a quality board, that uses water proof glue to bond the layers, it is lighter and free of knot holes compared to regular plywood. There is absolutely no reason to seal it if you are planning to glue carpet to it. Not only would sealing it effect the carpet glue adhesion, it is not needed because the carpet glue will seal the board anyways.

To answer your question, fine lumber in austin should carry it.

If you really want to seal it, then I would suggest figerglass resin, stay away from oils. I never pre seal mine, it gets plenty of use, but I also store inside, so the resin would give an extra bit of protection if it is store out doors uncovered.

Forgot to add, you'll need to thin the resin with acetone so it will soak into the board. Do a search and you will find how to instructions...


Edited by Alumacraft 14 (06/17/18 01:40 AM)

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#12795130 - 06/17/18 12:32 PM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
HillCountryReelRepair Offline
Outdoorsman

Registered: 03/12/18
Posts: 22
Loc: Liberty Hill, TX
Thanks for the info.

Another thing I saw online is sometimes itís bad to use marine grade plywood in a aluminum boats because something in the wood can react with the aluminum and cause pitting in the metal. Iím also putting down marine grade carpet padding plus carpet so Iím wondering if I can get away with just picking up some quality plywood and the carpet padding, carpet and two layers of glue should seal it just fine. Thoughts?
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Hill Country Reel and Rod Repair
Liberty Hill TX
www.hillcountryreelrepair.com

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#12795192 - 06/17/18 02:02 PM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
Bobby Milam Online   content
TFF Team Angler

Registered: 07/13/14
Posts: 3581
Loc: Arlington
I think it is the exterior grade that has the problem with the aluminum boat. I dont know if the glue will work or not. I have never heard that for sealing. I used resin. I put a heavy coat to let it soak in then I did a second coat on all sides. I then glued the carpet down. I figured there was enough work involved that I only wanted to do it one time.

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#12795382 - 06/17/18 05:24 PM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
Bob Landry Offline
Extreme Angler

Registered: 08/10/11
Posts: 2833
Loc: Austin, Tx
Treated plywood is the one not to use. The arsenic in the treated wood causes pits in aluminum. That's why there is so much discussion about using treated lumber for bunk boards.
As far as coating it, West System is the boat builders epoxy of choice. It's not cheap but it's the best. Get the tropical hardener so you have time to roll it on before it kicks. Coat both sides and the edges, twice if possible.
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#12795670 - 06/17/18 09:46 PM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
Alumacraft 14 Offline
Angler

Registered: 02/24/06
Posts: 301
Loc: Texas
Pressure treated wood causes galvanic corrosion when in direct contact with bare aluminium (moisture has to be present for this to occur).

Arsenic is no longer used in pressure treated wood, but rather it is injected with chromated copper hence the green color.

Exterior grade plywood lacks the water proof glue used to laminate and is heavier then marine grade. Buldging may occur if water penerates its sub layers. I would seal it for this reason.

Treated wood can be used. I have done it. But it must be insulated. I use rubber and overlapped carpet as my barrier to prevent contact. It is very heavy, must be allowed to dry so adhesive will stick, can warp during the drying process so lay it flat with weights to keep it from warping. When done right it last a hell of a long time even when exposed the elements. Great for Jons that need extra weight up front to prevent porpoising.

To answer your question:

If it were me, I would use exterior grade plywood, the best pieces I could find and seal them before carpeting.


Edited by Alumacraft 14 (06/17/18 09:59 PM)

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#12795918 - 06/18/18 08:54 AM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
Madatu Offline
Outdoorsman

Registered: 02/21/17
Posts: 179
Loc: Texas
you can order it from Home Depot, it is just a special order. i believe it was 110$ a sheet here in Dallas area. Basically, you can get it from an old style lumber yard as well.
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#12796547 - 06/18/18 03:34 PM Re: Marine Grade Plywood [Re: HillCountryReelRepair]
Bobby Milam Online   content
TFF Team Angler

Registered: 07/13/14
Posts: 3581
Loc: Arlington
I wouldn't buy any wood from HD if you can find any other option. There are different grades of wood and once you go to a real lumber yard whether a small one or a large one and check their stock out you will see the difference in quality. You won't buy from the big box stores again unless you have no choice.

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