Plywood WBP BS EN 363, BS 1088

[roughbert]

Try Timbmet if you need delivery.. http://timbmet.com/

I shall do so. If I can find "proper" WBP then I might revert to plan "A", as Robbins quoted enough for BS 1088 to buy the WBP and take a week's holiday, flights included. Possibly this is what people mean by "reassuringly expensive"!. I'm kicking myself for not spending more on the boat, but I do quite enjoy the wood butchery too.

It makes me wonder about these people who build little boats from WBP (Dylan Winter & Co, maybe) and just paint 'em. My local supplier can't be the only one stocking cr&p.

Great response the my original bleat guys, it is all appreciated.

 

[Quicky]

And thanks for it. What is your favorite penetrating epoxy? Do you mix your own?

West system

 

[LittleShip]

West as far as I know don't make a penetrating epoxy.......

This is what I use..

http://www.mbfg.co.uk/epoxy-resins/eposeal-300-epoxy-primer.html

It is very thin so will soak into the fibres of the ply. Several coats will seal it from water ingress.

Tom.

 

[fisherman]

I'm confused: BS 1088 specs are laid out in WIKI, but not BS 1455 which is the one I recognise, is it still about? Never had any trouble with 1455, used it in all sorts of structural, deck, it wore through before it delaminated.

Aha, withdrawn in 1986.

 

[AntarcticPilot]

I'm confused: BS 1088 specs are laid out in WIKI, but not BS 1455 which is the one I recognise, is it still about? Never had any trouble with 1455, used it in all sorts of structural, deck, it wore through before it delaminated.

Aha, withdrawn in 1986.

And the current BS EN 1455 is to do with plastic drain pipes! The "EN" means it is an ISO standard that has been adopted by BSI.

 

[roughbert]

I can't find a reliable standard in the world of WBP. Yesterday I acquired a sheet of "WBP" from a different merchant. It looks very like the original Mirror plywood - three-ply with outer skins of about 1mm. It is CE marked and graded E1. The merchant described it as WBP, which stands for Weather Boil Proof, a rather nebulous description. On checking, "E1" relates only to the release of formaldehyde. The other markings tell me where it came from (Malaysia) but not what its wet performance should be.

It seems to me that there is probably no single useful standard for WBP plywoods for marine use, although the BS 1088 standard appears to be more consistently used in distinguishing "real marine plywood" from "fake marine plywood".

This is a pity, because there are a lot of people building little boats of WBP these days and some of them are going to become unstuck!

At a guess, the low level of demand for boatbuilding WBP is insignificant to the timber trade regulatory bodies. Or maybe nobody has made representations. I shall dash off an email to BSI UK to see whether they can suggest anything.