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Marine Grade

This material is designed to be used in boat building or repair, and is sometimes used for other outdoor applications. The wood species are not necessarily more rot resistant; it is the construction of the plywood that makes it good for marine use. Proper sealing and finishing of edges and faces of the plywood is important to long term usefulness.

Special construction features of marine grade plywood include:

  • 1 piece veneers for both faces and inner plies

  • Minimum of defects, which are filled on inner plies

  • Waterproof structural adhesives

Note that we also inventory a variety of solid lumber items that are often used in boat construction including White Oak, Honduras Mahogany and African Mahogany.

Plywood-MarineGrade.jpg

free image courtesy of FreeDigitalPhotos.net

Prices effective 11/15/2023

Species
3mm-1/8"
4mm-5/32"
6mm-1/4"
9mm-3/8"
12mm-1/2"
18mm-3/4"
FIR - AB (MARINE)
*
*
$91
*
$179
$220
FIR - STK - C (MARINE- TREATED)
*
*
*
*
*
$194
MERANTI BS1088 (MARINE)
*
$69
$109
$169
$192
$279
OKOUME BS1088 (MARINE)
$89
$108
$151
$176
$202
*

 

Douglas Fir

Stocked in AB grade - "A" face does not allow knots, but up to 9 wood or synthetic patches are permitted. Backs and inner plies are "B" grade or better. That means knots, but no knot holes. Edges cannot have cross band gap or edge splits in excess of 1/8". No inner ply laps are allowed. Glue is fully waterproof phenolic resin. Sanded both sides. Commonly used on hulls, and for lapstrake boats.

Stocked in STK-C Pressure Treated Marine Tech grade - CCA (Chromated Copper Arsenate) treated to .4 retention, and dried after treatment. This helps keep the sheets flatter and straighter. "STK" face allows small tight knots, and is sanded. Splits over 1/32" are filled. Backs and cores are "C" grade which allows open knots and holes. Designed for rigorous marine use. Commonly used as decking on house boats and pontoon boats - also for horse and equipment trailers.

Meranti - Hydrotek

Meranti is also known as Phillipine Mahogany, and this plywood meets BS1088 marine grade standards. Whole piece veneers are used for both the faces and inner plies. Faces are 1.2 mm thick, rotary cut with no structural defects. Core veneers do not allow voids. This plywood holds fasteners well and the glue used is WBP (water and boil proof). Hydrotek's durability rating ensures that it will make the highest quality boats.

Okoume

Okoume is an African hardwood that has long been prized for aircraft and boat building. It has a high strength to weight ratio, which makes it popular for kayaks, sail boats, racing boats and other situations where light weight is important.  This material meets BS1088 marine grade standards. Whole piece veneers are used for both the faces and inner plies. Faces are 1.2 mm thick, rotary cut, and color matched, with no structural defects. Core veneers do not allow voids. Glue is WBP (water and boil proof).

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