New Wooden Deck for Pontoon Boat

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  #1  
Old 10-29-02, 09:58 AM
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New Wooden Deck for Pontoon Boat

I am replacing the deck on my 26 foot pontoon boat, afterwhich I will recarpet the deck and reinstall my seating etc. I have had advice to use 3/4 inch marine grade plywood. This comes in two grades at $86 for grade AA and $69 for grade AB. Because of the cost associated with this approach, I know some people who have used regular 3/4 inch plywood (smooth finish on one side) and have used 2 coats of wood sealer and two coats of polyurethane. Since I do not feel like engaging in this additional labor, can I get by with the less expensive Marine grade AB? Also, a lumber yard guy said this AB marine grade plywood should also be treated with a sealer. Is that correct? I'm buying the marine grade so I don't have to get involved with all the other steps. Any good advice out there?
 
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  #2  
Old 11-03-02, 02:30 PM
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ply wood

i'm thinking the difference in price here is about 70 bucks , and something that is going to last for awhile , mite be the difference in cost is , the number of plys that one has to the other , i would go with the best grade , it would be stronger having more plys , used to redeck these floating crafts , and best is alway better , dont forget to draw a plan of where everything is useing a tape and this will get you back to where you were befor the r&r of the new floor
 
  #3  
Old 11-05-02, 01:16 AM
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Location: Northeastern NC On The Albemarle Sound
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Cool

AA and AB, etc. is the grade of only the two outer surfaces of plywood whatever the thickness or treatment, if any.
A is the highest, clearest and best grade surface, B is next, and so on. For example, CDX plywood would be C grade on one side , D grade on the other, and the X stands for exterior. (Untreated CDX is common for use as roof sheathing, etc.)
If you're using marine plywood, AB should be fine with the A side up. There should be no need to "seal" it. That would be optional. Marine grade is pressure-treated for that purpose.
The number of plys has to do only with the thickness (strength), which should be 3/4" for decking.
I have a smaller pontoon boat, and that's what I would use anyway...3/4" AB marine grade.
Good luck!
Mike
 
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Old 11-05-02, 04:41 AM
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oops on the grade of plywood

thanks oldguy for the fix on the grade of plywood , almost
 
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Old 11-05-02, 04:49 PM
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A while back I rebuilt my aluminum fishing boat and used standard pressure treated plywood as marine grade was unavailable.
Any idea on how well this material stands up compared to marine grade plywood?
 
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Old 11-05-02, 05:40 PM
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Gregh on plywood

where i used to work r&r decks , that was all that was available up here in upper mi. , so don't know what the lasting affect is from marine , compared to pressure treated wood , just know this is what we used , have a pontoon we did that is used across the sreet where we live that i did , and it is about 9 years and going good so far , still as strong as the day we did the job , ????? so what can i say , almost
 
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