Marine Ply - what is it and where can I get it

[IanPoole2]

Can anyone explain whats the difference between Marine Ply and ordinary external grade ply, besides one's designed for use in a continually wet environment.
Also - anyone know where I can buy 1 sheet in the North Essex area????

 

[Carronade]

The main difference between marine and WBP ply is with the veneers. Marine ply has better quality veneers throughout. It is also made to a more stringent specification. I have used WBP with good quality facing veneers for interiors without problems.

I have had to purchase the material through a company in Dorset and I live in the NE of England!

The company is KJ Howells and the tel no is 01202 665724

 

[Strathglass]

Try <A target="_blank" HREF=http://www.clarkswood.com>http://www.clarkswood.com</A>

Iain

 

[Maurice55]

I aggree with that. The main difference apart from the quality of the timber itself, being the (theoretical) absence of any void in any layer of wood.Now if you realy need real marine grade you will have to go to a specialist, but if you have a good eye for timber and know a builder's merchant where you can pick and choose , you probably can find a good batch of WPB ply of better quality than some so called marine ply !.....M.

 

[aztec]

hi ian, go to your nearest sydenhams, or wykes. they have a decent marine ply... and it's cheap. the difference between wpb and marine ply is the voids, wpb can have voids... marine ply can't (supposedly!)

good luck, steve.

<A target="_blank" HREF=http://homepage.ntlworld.com/s.amos/index.html>http://homepage.ntlworld.com/s.amos/index.html</A>

 

[LadyInBed]

Re: Marine Plywood BS 1088

Try <A target="_blank" HREF=http://www.robbins.co.uk> Robbins </A>

British Standard Specification for Marine Plywood BS 1088
Marine Plywoods manufactured to BS1088 must satisfy a number of minimum requirements, of which the following is a brief summary:
1) All veneers, both internally and externally must be free from gaps, all sapwood and natural defects.
2) Internal veneers must all be of a durable species and the same quality as the face veneers.
3) The glue line must be WBP (Weather and Boil Proof), usually a resorcinol resin. It must be resistant to attack by micro-organism, cold and boiling water, steam and dry heat.
4) Genuine marine plywood should always be stamped with its country of origin and ideally carry Lloyds certification and certification that it is manufactured to BS1088.

Product Standard PS 1-95 for Constructional and Industrial Plywood

5.6.1 Marine - Marine grades shall meet the requirements of Exterior plywood and shall be one of the following grades: A-A, A-B, B-B, High Density Overlay, or Medium Density Overlay, all as modified in 5.6.1.1 through 5.6.1.3.

5.6.1.1. Species - Only Douglas-fir 1 and Western Larch veneers shall be used.

5.6.1.2 Veneers - Grade A faces shall be limited to a total of nine single repairs in a 1220mm x 2440mm (48- by 96- inch) sheet, or to a proportionate number in any other size as manufactured.
All inner plies shall be B grade or better and shall be full length and width.
All wood repairs shall be glued with an adhesive meeting the Exterior performance requirements of 5.7.4 (see below) and, in addition, shall be set in the panel using a technique involving both heat and pressure.
When the inner plies consist of two or more pieces of veneer, the edges shall be straight and square, and shall not overlap.

5.6.1.3 Crossband gaps and edge splits - Neither edge of a panel shall have any crossband gap or edge split in excess of 3.2mm (1/8 inch) wide. Crossband gaps and edge splits per 2440mm (96 inches) of crossband ply shall not exceed four in number. End splits and gaps on either end of a panel should not exceed 3.2mm (1/8 inch) in aggregate width.
There shall be no filling of crossband gaps and edge splits.

 

[Gunfleet]

Ian, try
S Silverman & Son (Importers) Ltd
Harvey Rd,Burnt Mills Ind Est
Basildon Essex
SS13 1ES

Tel: 01268 591111

 

[Plum]

Re: Robins?

Although I have no experience of Robins, may I recommend you search through the earlier postings as I recall there was somone complaining here about the quality of Robins' marine ply.

 

[cngarrod]

Nort sure how close you are to Ipswich - but try Holden Timber, they are near Neptune Marina. Local wood merchants... reasonabley priced, will cut to fit and so on...

Cheers,

Craig.

 

[ccscott49]

Re: Robins?

Quite right a guy in sweden I think! They wanted nothing to do with his complaints and ignored him. They ply I seem to remember came form israel. Theres bound to be people in hia area for marine ply, it's not exactly rocking horse nmanure.