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Post by eightptrob on Feb 26, 2009 21:35:52 GMT -5
I'm putting a new floor in my boat and was wondering if anyone knows where i can get marine plywood? or if anyone has any other suggestions thanks rob
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Post by mechantmalade on Feb 27, 2009 0:12:28 GMT -5
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Post by schodackbassman on Feb 27, 2009 11:44:26 GMT -5
Seems like I remember seeing it a Curtis Lumber before. Any place that sells wood for building docks should have it too. If not, I would think pressure treated plywood may work as well.
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Post by philb on Feb 27, 2009 19:20:45 GMT -5
Hello Eightprob
Northend Hardwood @ 31 Adams Drive Williston Vt 802-864-3102 should have it in stock.
Thanks Phil B
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Post by mechantmalade on Feb 27, 2009 21:10:59 GMT -5
Never mix pressure treated plywood with aluminium
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Post by eightptrob on Feb 27, 2009 21:54:24 GMT -5
thanks for all the info.
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Post by Raz on Feb 28, 2009 8:07:58 GMT -5
Never mix pressure treated plywood with aluminium What happens Andre?
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Post by mechantmalade on Feb 28, 2009 9:18:29 GMT -5
CCA treated marine plywood is the only type of lumber which the EPA still allows to be treated with arsenic (a superior preservative), new laws require standard plywood to be treated in a manner that will destroy aluminium, marine carpeting and hardware (the use of a copper compound rather than arsenic). We understand the difficulties in finding a source for treated marine plywood with these new EPA rules. Treated lumber and aluminum don't get along. When I tore out my old floor in the Lund the last guy had put a piece in the bow and oxidation was taking place big time. Just a fair warning. Aluminum should not be used in direct contact with CCA or ACQ treated lumber." Marine plywood is not the same as treated plywood. Treated plywood can mean one of many different treatments, but usually referrs to fire retardant treatment, which is a salt based treatment and indeed is not something anyone would want in an aluminum boat The treated lumber for the past 3 years is treated with ACQ (Alkali-Copper-Quaternary). Stainless steel, double dipped hot galvanized steel or coated with something that has a "Z" rating are the only metals that can be in direct contact with ACQ treated lumber. Aluminum is extremely reactive with ACQ. Many building inspectors have demo pieces of aluminum siding that were in direct contact with ACQ for 6 months to a year,all of the aluminum that was within an inch of the treated lumber is gone. The old CCA and the newer ACQ resist mold and mildew, but they were never moisture resistent. They were designed to resist insects. Bottom line it is an extremely caustic material that you don't want anywhere near your aluminum boat.
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Post by Sundown on Feb 28, 2009 19:47:52 GMT -5
WOW, Now that's some information that's good to know........Thanks
Sundown
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Post by Raz on Mar 1, 2009 6:27:03 GMT -5
Good to know for sure. Thanks Andre
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Post by champlain fisher on Mar 1, 2009 6:41:29 GMT -5
I put a new floor in my 14 ft about 10 years ago and used pressure treated plywood and have not seen any problems. Must be they did indeed change the treatment they use if it now re-acts with aluminum. Thats to bad on that cause PT was less then marine plywood. My floor is still as soilid now as when I put it in so the PT holds up pretty good.
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Post by fishfarmer on Mar 1, 2009 8:22:55 GMT -5
I replaced my flooring with pressure treated about 5 years ago. I haven't noticed any issues with my aluminum, but the marine carpet didn't stick well to the plywood.
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Post by woolywag on Mar 1, 2009 15:37:35 GMT -5
I replaced the floor in my Lund last year w/ pressure treated , I could not find marine grade I hope it isn't a problem if it is the second time to replace it will be easier at least
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