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AC Interior Hoop Pine Plywood                                          Standard: AS/NZS 2270
Appearance Description Grade Thickness LengthxWidth (mm)  Applications
interior---ac-interiro-hoop AC interior Hoop Pine plywood made using ‘C’ bond interior glue is a non-structural, interior ply suitable where a high quality aesthetic finish is required. ‘A’ face
‘C’ back
2400 x 1200
2400 x 1200
2400 x 1200
2400 x 1200
Internal wall panelling
Furniture and fitments
Interior door skins
Ceiling linings
Perforated acoustic panel
Interior Hardwood (Meranti/Lauan) Plywood
Appearance Description Grade Thickness LengthxWidth (mm)  Applications
interior---interior-meranti Interior hardwood (Meranti/Lauan) plywood made using ‘C’ bond glues. Suitable for interior use only Face grades vary
1830 x 915
2135 x 915
2440 x 1220
2745 x 1220
2440 x 1220 3050 x 1220
Interior wall panelling
Furniture and fitments
Interior door skins
Ceiling linings
Plygroove Wall Panelling
Appearance Description Grade Thickness LengthxWidth (mm)  Applications
interior---plygroove Ecoply Plygroove is a quality panel designed to give a traditional tongue and groove finish. It can be painted or sealed to retain the natural timber look and features V grooves at 100mm centres. It is extremely durable and can be used for cabinetry, internal decorative walls, lining or bracing ‘S’ face ‘D’ back
9mm 12mm 12mm
2400 x 1200
2400 x 1200
2700 x 1200
Internal wall lining
Internal ceiling lining
Feature walls
Back lining to exposed rafters

Please note each state carries different stock so please contact your local Gunnersen Branch for availability

PLYgroove plywood is manufactured from Pinus radiata veneers bonded with phenol formaldehyde A: Bond (Marine) resin. Quality and grade complies with the joint Australian/New Zealand Standard AS/NZS 2269. 0:2008 and PAA JAS/ANZ accreditation.

PLYgroove can be used in compliance with the Building Code of Australia as follows:


PLYgroove is structural plywood which is the only wood based panel material with design values in the timber engineering codes in both Australia and New Zealand. PLYgroove complies with the requirements of NZS 3604 and may be used in accordance with AS 1684.


Plygroove will last in excess of 50 years in dry interior spaces. In wet areas like kitchens, bathrooms or laundries, Plygroove should be protected from water splash by good quality paints or coatings. Attack from, common household borer is unlikely or will be at an acceptably low level provided the plywood is kept dry. For termite protection, design and maintain in accordance with AS 3660. For exposed situations Plygroove requires proper treatment to MP3640 or AS 1604.


PLYgroove is supplied at the correct moisture content for interior use. It should be protected from dampness throughout delivery, storage on site, and during construction.


PLYgroove has been tested for Early Fire Hazard properties. It can be used in any occupancy when the surface finish on the plywood has an index below that required.

Early Fire Hazard Properties of 12mm thick Plygroove Plywood
Coating Ignitability Index: 1g Spread of flame Index: SFI Heat Evolved Index: HEI Smoke Developed Index: SDI
Untreated, uncoated 14 7 7 3
Intumescent * coating 5 to 12 0 0 to 3 4 to 5

Note: * Intumescent coatings are available in clear and pigmented versions from Firepro Safety Ltd (Nullfire WD, Flamecoat) and Polymer Development Group Ltd (Unitherm 19010)

Thermal Insulation

Plywood has a thermal conductivity of 0.13 W/mK and adds 0.1 to the R value of wall or roof assemblies. In design consider the whole assembly including enclosed air and insulation.



Framing centres are in Table 3. All edges of 7 mm PLYgroove should be supported. The Tongue & Groove joint on 12 mm sheets does not need support - all other edges do.

Maximum frame centres (mm):
Plywood thickness (mm) 9 12
1. Fixed vertically, maximum stud spacing without nogs or dwangs 600 600
2. Fixed vertically, maximum nog spacing on studs at wider centres than 1 800* 1200
3. Fixed horizontally, maximum stud spacing 800* 1200
Ceiling or soffits: 4. Face grain across framing, under or over frame, maximum spacing 600* 1200
Mezzanine floor/ceiling: 5. Over joists, face grain across joists, maximum spacing - 400

Closer spacings are recommended in high impact areas e.g. bars, gyms, industrial or crowded spaces. In damp situations, allowance should be made for swelling.


Nails: Use 40 x 2.0 mm panel pins at 150 mm centres at sheet edges and 300 mm centres on intermediate supports. If back nailing over rafters use 40 mm x 2.5 galvanised flat head nails.

Screws: Use No.8 gauge x 40 mm screws on timber framing and 10- 16-45 self drilling self tapping screws on steel. Select screw head to suit architectural details.

Adhesives: Panels may be fixed with a bead of elastomeric construction adhesive .either by nailing at 150 mm centres on all glued surfaces, or by applying pressure and cure time in accordance with the glue manufacturers instructions. Use glues to American Plywood Association Specification AFG 01. (e.g. Max Bond, Sturdi Bond, Nortons Floormate).

PLYgroove as bracing

Flathead nails are normally required for bracing and may be used as a decorative feature (eg rosehead stainless steel annular grooved), or hidden beneath mouldings, skirtings, etc. Ecoply 7 mm plywood has been tested with elastomeric glue. Use bracing ratings in accordance with the Plybrace House Bracing System Manual when PLYgroove is fixed with standard flathead nails, or 40 mm bullet head nails with elastomeric adhesive to AFG01. For Australian applications where the panel is being used for wind resistance only, use resistance values and fastenings as given in the PM "Featuring Plywood in Buildings" brochure. PLYgroove fixed with panel pins or bullet head nails only is rated for a reduced wind bracing value, but is not suitable for seismic bracing. 12 mm T & G PLYgroove must be fixed to framing along the tongued edges for bracing. For further bracing information refer to Plybrace: House bracing system manual.

Curved components

Minimum bending radius:
Thickness (mm) 7 12
Along face (m) 1.8 3.6
Across face (m) 0.6 2.2


Punch nails before finishing and apply a first coat (clear, primer or sealer) before filling punched holes to minimise dryout or staining. High quality paints, stains or clear finishes are recommended for PLYgroove. Tinted clear finishes can provide a full range of architectural options that show the warmth of wood, while reducing yellowing and other ultraviolet effects. The use of high gloss finishes and paints tend to highlight naturally occurring and manufacturing characteristics of plywood such as changes in grain and beat marks from the sanding. Matt finishes and paints are recommended to provide a natural timber finish. PLYgroove is a wood based product that responds to changes in humidity. Avoid using inflexible coatings (such as epoxies) that my check on movement of the wood. For ceilings or similar applications it is an advantage to prefinish panels prior to installation. Use the coating manufacturers specifications.

Soffit linings

PLYgroove can be used to line under the eaves of buildings. Good quality paint or stain is recommended to protect the untreated plywood from intermittent wetting and wind blown moisture. If the Soffit is very exposed or in large overhangs, preservative treatment should be considered. Do not use water based treatments on PLYgroove.

Storage and handling

  • Keep dry.
  • Store under cover (avoid tight cover and potential condensation).
  • Handle and stack with care to avoid damage.
  • Handle and stack with care to avoid damage.


Available from stockists, merchants and agents throughout Australia, New Zealand, Pacific Islands and some Asian countries.


All statements in this manual shall be read subject to the plywood being properly stored, handled, installed, used and maintained as appropriate to each application in accordance with this brochure, and subject to the governing codes of practice.

Formaldehyde Emissions

All PLYgroove is manufactured using an A Bond with less than 0.3mg/l Formaldehyde (equivalent to Super E0) emissions from the final product. Click here for formaldehyde certificate.


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

pdf interior_plywood-austral 27.05 Kb

pdfFormaldehyde Emission Classifications

pdf plygroove 90.40 Kb

pdf msds_interior_meranti 10.81 Kb

IMPORTANT: Do not use oil based products on Hoop Pine plywood.  Please visit 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.

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.

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.

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.

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.

a-grade a-grade a-grade a-grade a-grade a-grade
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
Engineered components
Concrete formwork
Gussets Roof decking
Flooring Sub sheathing
Bins, boxes & crates
Stressed skin panels
Structural components
Beams & portals
Roofing Bracing
Utility buildings
Temporary security
Pallets Fillets & liners
General packaging


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.

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 marine, exterior 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.


PROJECT Paint Grade 



Bendy Ply
Barns & Sheds      
Boat Hulls      
Boxes and Crates  x    
Caravans & Mobile Homes      
Carts & Wheel-barrows      
 Ceilings   x    x  
 Cubby Houses      
 Dog Kennels      
 Doors & Door Skins    x    
 Exterior Wall Cladding      
 Floors (General)      
 Furniture (General)   x    x
 Interior Wall Lining   x  x  
 Musical Instrument   x    
 Outdoor Furniture (General)      
 Partitions & Screens  x  x   x
 Platforms & Ramps      
 Shelving   x    
 Signboard & Billboards      
 Table Tops      
 Toys   x      x
 Truck & Trailer Floors      
 Wall Cabinets  x  x  



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