Another re-deck thread

Joined
Jul 16, 2006
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2
I have a 35' crest pontoon houseboat that needs a new floor on the outside. I pulled the rails off and took the old rotted plywood all off from the outside and now I can't decide what to do for the new floor. I am between plywood/carpet again $400, Using pressure treated deck boards-$450, or going crazy and using composite decking for $850.

My cross members are all galvanized so I shouldn't have any problems with aluminum reacting to the pressure treated ply or decking. I've never seen anyone re-deck with deck boards and would like opinions, pros and cons, experience.

I'm kind of leaning towards treated deck boards. I already pressure wash the boat so washing the deck and throwing some Thompsons down once a year or staining it won't be a big deal. The deck boards also should be close to the same weight as doing plywood again. It will also let water drain through the deck unlike before where it laid on top of the carpet and wood until it rotted.

Composite decking is about twice as heavy unless I get the hollow core which would add another 350 or so on top of the 850. I have read reviews saying the hollow core will expand and contract like mad though and some of it has mold issues.

Of course plywood and carpet did last 20 years the first go round though and I most likely won't have it for another 20.

Any thoughts are appreciated.
 

5150abf

Vice Admiral
Joined
Aug 12, 2007
Messages
5,808
Re: Another re-deck thread

What ever you use keep in mind that the deck on a pontoon is a major structural member so if by "deck boards" you mean individual boards like a hardwood floor then no I wouldn't do that, the flexing of the baot would likely just tear them up.

It is best to go with 4x8 sheets of something to spread the load and as you have found out composites are very expensive.

I would go with tried and true marine ply wood if it were mine but just from a stutural perspective stay away from individual boards.
 
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