Home > Companies > UPM Plywood > WISA-Birch and WISA-Birch Special

All birch veneer, structural grade plywood to which the section properties, grade stresses and moduli listed in BS 5268-2 apply; see also 'Handbook of Finnish plywood' (visit manufacturer's website for details).

Plies are bonded using a phenolic resin, cross-bonded, weather resistant glue to EN 314-2, Class 3 'Exterior'.

Shapes, profiles and drillings can be machined to specifier's drawings.

As wood is a living material, every panel is unique. Thus a photograph or a sample piece cannot represent all variations in colour, shade, graining, knots, etc.

Related literature

The following content references this product:

Options

Face veneer appearance class to EN 635:

Available face veneer qualities:

  • II – surface suitable for painting or coating.
  • III – surface suitable for painting or coating with thicker materials.

Face grades II and III are recommended where high strength is needed. For the best face grades for visible, demanding applications see WISA-Birch Premium.

Thickness (number of plies); weight:

  • 6.5 mm (5 ply); 4.4 kg/m².
  • 9 mm (7 ply); 6.1 kg/m².
  • 12 mm (9 ply); 8.2 kg/m².
  • 15 mm (11 ply); 10.2 kg/m².
  • 18 mm (13 ply); 12.2 kg/m².
  • 21 mm (15 ply); 14.3 kg/m².
  • 24 mm (17 ply); 16.3 kg/m².
  • 27 mm (19 ply); 18.4 kg/m².
  • 30 mm (21 ply); 20.4 kg/m².

Other thicknesses available on request. Thicknesses and tolerances meet requirements of EN 315.

Panel size:

Standard sizes are:

  • 1220 x 2440/ 3050/ 3660 mm.
  • 1250 x 2500/ 3000/ 3600 mm.
  • 1500 x 1500/ 2400/ 2500/ 3000/ 3600 mm.
  • 1525 x 1525/ 2440/ 2550/ 3050/ 3660 mm.

Scarf jointed panels up to 1950 x 5600 mm available on request. Strength of scarf joint is 10–30% less than that of standard panel.

NBS Specification

NBS Create logo
This product is associated with the following NBS Create clause:
45-45-95/485 Structural veneer plywood

Product specification

An important note about specifying

Manufacturer

Name:

UPM Plywood

Tel:

+44(0)20 3530 4433

Product reference

[WISA-Birch]
[WISA-Birch Special]

Face veneer appearance class to BS EN 635

[Class II]
-
WISA-Birch Special only. Grade S to SFS 2413.
[Class III]
-
WISA-Birch only. Grade BB to SFS 2413.

Reverse veneer appearance class to EN 635

Class IV - WISA-Birch only.

Finish

[Sanded along the grain]
-
Available on request.
[Unsanded]

Thickness

[6.5 mm]
[9 mm]
[12 mm]
[15 mm]
[18 mm]
[21 mm]
[24 mm]
[27 mm]
[30 mm]

Edge profile

[Square]
-
As standard.
[Tongued and grooved two long edges]
[Tongued and grooved four edges]

Panel size

Contractor's choice

Manufacturer details

Station House,
Stamford New Road,
Altrincham, WA14 1EP
Tel +44(0)20 3530 4433
Fax
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