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Old 13 January 2019, 12:28   #1
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Plywood?

The two boards which sit above the inflatable keel in my SIB are pretty knackered, and one has cracked down the centre, which means I've lost some of my hull shape.

What's the best kind of plywood to replace them with?

I was thinking 'marine ply', but I see it's not listed as waterproof.

Nick
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Old 13 January 2019, 13:17   #2
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Genuine marine ply. Epoxy coated.

Expensive. Not sure where you'd get it other than Robbins
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Old 13 January 2019, 14:17   #3
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There is various grades of marine ply with Lloyds Register certified probably being the best (and most expensive).
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Old 13 January 2019, 17:17   #4
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There is no such thing as waterproof plywood, the glue in wbp (exterior grade) and marine ply is the same waterproof glue but the wood itself will absorb water unless sealed.
The big diference between wbp & marine is in the plys which are guaranteed to be free from knots and voids in marine whereas wbp may have the odd void.
For a set of deck boards that are to be painted or fully sealed id just go for regular wbp(exterior grade) ply. Marine ply is intended for use below the waterline and in my opinion for your purpose will be money wasted
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Old 14 January 2019, 04:32   #5
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Quote:
Originally Posted by nicksharpe View Post
The two boards which sit above the inflatable keel in my SIB are pretty knackered, and one has cracked down the centre, which means I've lost some of my hull shape.

What's the best kind of plywood to replace them with?

I was thinking 'marine ply', but I see it's not listed as waterproof.

Nick
mines buffalo board supplied by the manufacturer of the trailer, ive used tanalised timber from B&Q cheap and put carpet on it with no issues.
you can also get plastic decking boards not expensive
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Old 14 January 2019, 05:48   #6
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Id agree with using plastic foamex etc. Just replaced the ply floor on my tender and done exactly that. Wont rot and has some flex
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Old 14 January 2019, 06:02   #7
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good as anything with some bathroom carpet on


https://www.envirobuild.com/products...aign=Lumber_PL
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