Marine Plywood

Description

Marine Plywood                                                                   Standard: AS/NZS 2272
Appearance	Description	Grade	Thickness	Length x Width (mm)	Applications
	The ‘Rolls Royce’ of Plywoods. Manufactured with Type-A-bond glue and no core gaps. Uses selected species with minimum stress grade F14 with ‘A’ grade, sanded face and back. Waterproof adhesive will resist rotting in high-moisture environment	‘A’ face ‘A’ back	4mm 6mm 9mm 12mm 16mm 19mm 25mm	2400 x 1200 2400 x 1200 2400 x 1200 2400 x 1200 2400 x 1200 2400 x 1200 2400 x 1200	Boat building Docks Building and construction where there is exposure to a high-moisture environment Motor homes Feature walls
BS 1088 Imported Marine Plywood                                    Standard: BS 1088
Appearance	Description	Grade	Thickness	LengthxWidth (mm)	Applications
	Made with untreated tropical hardwood veneers having a suitable prescribed level of resistance to fungal attack with a Type-A-bond, WBP quality glue line between the plies. Solid surface face veneers are free from open imperfections	‘A’ face ‘A’ back	4mm 6mm 9mm 12mm 15mm 18mm 24mm	2440 x 1220 2440 x 1220 2440 x 1220 2440 x 1220 2440 x 1220 2440 x 1220 2440 x 1220	Boat building Building and construction where there is exposure to a high-moisture environments Motor homes

Technical

For more information please download the Material Safety Data Sheets (MSDS).

  marine_ply_boral 16.13 Kb

 marine_plywood-austral 27.05 Kb

 super_e0_austral_certificate 338.88 Kb

For more information on Marine Ply standards BS1088 download the following pdf:

 marine_ply_standards_bs1088 1.61 Mb

IMPORTANT: Do not use oil based products on Hoop Pine plywood.  Please visit www.australply.com.au for more finishing guidelines.

PRODUCT WARNING: Austral Plywoods will not be involved in future disputes for end users using oil based finishes on our plywood.

The above caption now appears on all invoices and delivery dockets. There are a number of warnings on our website and EWPAA website.

Our recommendation is Dulux Intergrain UltraClear UV Non Yellowing Water Based Polyurethane.

LEAD TIMES
Current lead times for Austral Plywoods are as follows:
A-C Exterior and Interior is approx 10 weeks
Marine is 6 - 8 weeks
B-B is 6 - 8 weeks
B-B Multiply is approx 6 weeks
Please check on B-C and B-D options in exterior and interior, ex stock
We also have some 18x12 and 24x9 on the floor from cut backs

The strongest, lightest, most versatile utility and decorative product made from a renewable resource, plywood is kilo for kilo stronger than steel. Plywood was the first type of engineered wood to be invented. It is made from thin sheets of wood veneer, called plies or veneers. These are stacked together with the direction of each ply’s grain differing from its neighbours’ by 90° (cross banding). The plies are bonded under heat and pressure with strong adhesives, usually phenol formaldehyde resin, making plywood a type of composite material. Laminating an odd number of plies (3, 5, 7...) reduces warping while increasing the number of plies increases the resistance to shearing forces. A common reason for using plywood instead of plain wood is its resistance to cracking, shrinkage, twisting/warping, and its general high degree of strength.

BENEFITS OF PLYWOOD
Renewable Resource - A natural product from a renewable resource.
Beautiful - Preferred because of its warmth and natural markings.
Strength - Unique cross-layered structure makes it kilo for kilo, stronger than steel.
Efficiency - Uses more of the log than timber.
Versatility - Can be bent and formed to meet various sizes and shapes.
Durability - Long-lasting and good resistance to damage.

TYPES OF PLYWOOD
Plywood can be broadly classed as either ‘Exterior’ plywood or ‘Interior’ plywood. Veneer quality, glue type and timber species are the major contributing factors that determine the application of a plywood panel.

VENEER QUALITY
Plywood is classified according to grades, which are based on face and back veneer quality. The Plywood Association of Australia (PAA) grading standards are as specified in the following table.

Grade A	Grade S	Grade B	Grade C	Grade D	Grade PG
Description:	Description:	Description:	Description:	Description:	Description:
A high quality appearance grade veneer suitable for clear finishing.	An appearance grade veneer which permits natural characteristics such as knots as a decorative feature subject to agreement.	An appearance grade suitable for high quality paint finishing.	A non-appearance grade with a solid surface. All imperfections such as knot holes or splits are filled.	A non-appearance grade with permitted open imperfections. Limited number of knots and knot holes up to 75mm wide are permitted.	A non-appearance grade that has open imperfections such as holes, knots, splits and rough grain.
Applications	Applications	Applications	Applications	Applications	Applications
Textured exterior cladding Interior wall lining Interior ceiling lining Furniture & joinery	Decorative applications Interior wall lining Interior ceiling lining	Furniture & joinery Concrete formwork Primary sheathing Signs Engineered components	Concrete formwork Gussets Roof decking Flooring Sub sheathing Bins, boxes & crates Stressed skin panels Hoardings	Structural components Beams & portals Roofing Bracing Utility buildings	Temporary security covers Pallets Fillets & liners General packaging Crates

Most local plywood conforms to the PAA standard with imported plywood in compliance with other grading standards such as:

BB/CC grade which conforms to the Japan Plywood Inspection Corporation (JPIC) standard. BB/CC grade plywood has a good face that may have small
imperfections that are filled and sanded. ‘CC’ back may have rough patches and filled splits.
Overlay and Better (OVL/BTR) is more of an appearance grade plywood that conforms to the International Hardwood Product Association (IHPA) that uses
more veneer in construction to produce higher stress grade plywood.


GLUE BONDS
Glues used to bond veneers together are an element that influences the application of the plywood. Common glues are as follows:

‘A Bond’ (WBP) - a waterproof glue line produced from phenolic resins (WBP -Water Boil Proof adhesive) that will not deteriorate under extreme conditions. It is readily recognisable by its black colour. Type A bond is specified in AS/NZS 2272, 2269 and 2271 for exterior, marine and structural plywood.

‘B Bond’ - produced from melamine fortified urea formaldehyde resin and suitable for limited exposure.

‘C&D Bond’ – is produced from urea formaldehyde resin and suitable for interior use only.

Application