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Wisa – SP Exterior Plywood

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wisasp

WISA-SP Exterior plywood products are designed especially for cladding facades and balcony walls in buildings, for eaves and roof soffits, vehicle body constructions, traffic signs, advertising boards, etc., which are to be painted. WISA plywood suppliers craft WISA-SP as a hard, compact and smooth painting exterior plywood. The coating endures well wear and impacts and prevents hairline cracking, which commonly occurs when uncoated plywood is painted.

General product information

Product description

Birch plywood panel overlaid with phenolic based painting paper. WISA-SP is a non-cracking base for painting for both interior and exterior applications. Recommended end uses are eg. sign posts, facades and toys in playgrounds.

Bonding

Phenolic resin cross-bonded weather resistant glueing according to EN 314-2/class 3 (DIN 68705 Teil 3: BFU 100; BS 6566 Part 8: WBP).

Surface / Face

Light brown paintbase coating.

Surface / Reverse

Light brown paintbase coating.

The reverse can also have a dark brown phenolic film.

No edge protection.

Machining

Edge and CNC machinings available on request.

Design information

Thicknesses and weights

The SP film coating both sides increases the standard thickness approx. 0.2 mm and the weight approx. 600 g/m2.

Nominal thickness mm
No.of plies

Minimum thickness

mm *)

Maximum thickness

mm *)

Weight kg/m2 *)
6.5
5
6.3

7.1

5.2
9
7
9.0
9.7
6.9
12
9
11.2
12.7
9.0
15
11
14.5
15.5
11.1
18
13
17.3
18.3
13.2
21
15
19.8
21.1
15.3
24
17
22.7
23.9
17.4
27
19
25.0
27.0
19.5
30
21
27.9
30.1
21.6

*) Moisture content 8-10%.

Notice!

For scarfjointed WISA-SP (Maxi) standard thicknesses are 6.5 – 21 mm.

Panel sizes

  • 1220 x 1220/2440/2500/3050 mm
  • 1250 x 1250/2400/2500/3000 mm
  • 1500 x 1500/2400/2500/3000 mm
  • 1525 x 1525/2440/2500/3050 mm

Other dimensions at request.
Maxi size panels also available.

Largest scarfjointed panel size 12300 x 2700 mm.

Size tolerances/standard and maxi sizes

  • < 1000 mm +/- 1 mm
  • 1000 – 2000 mm +/- 2 mm
  • 2000 – 6000 mm +/- 3 mm
  • > 6000 mm +/- 5 mm

Squareness tolerance: +/- 1 mm / 1000 mm
Size tolerance for other dimensions/cut-to-sizes +/- 1 mm.

Properties of panel surface

Non-painted surface of scarfjointed WISA-SP Maxi is visually more varying than that of the standard WISA-SP.

Strength values

The strength values as per the Handbook of Finnish Plywood.

Recommendations for use

WISA-SP surface is developed to provide a good base for painting operations. Applicable paints are eg. epoxy paints and two-component polyurethane paints.

Additional information

For further information of installation, maintenance, disposal, environmental matters etc. please contact your supplier or UPM.

Amendment of specifications

The UPM policy is one of continuous development. We reserve the right to amend specifications without notice or obligation.

Liabilities

Any defects other than caused by clearly verified production or service faults by the supplier are the responsibility of the user. Any claim for compensation is limited to the value of the defected panels.

Please view if you would like to read about our other plywood products.