WISA-Spruce

WISA-Spruce is a truly versatile plywood panel for numerous end uses. The panel is light in weight yet strong and rigid - therefore most suitable in  structural uses and load bearing applications like roofing, flooring, wall sheeting, packaging and joinery. The wide size range with several thicknesses and sizes, the CNC machining possibilities in addition to three different surface qualities widen the usage potential beyond traditional end uses.

Bonding

Weather resistant glueing according to EN 314-2/class 3 Exterior. WISA-Spruce and WISA-Spruce Special fulfills the requirements of EN 13986 E1 low formaldehyde emission class. On request deliveries according to TSCA Title IV / CARB Phase II.

Surface and edges

Face veneer grades II and III according to standard EN 635-3. 
Additional grade G (WISA-Spruce Special): solid surface with no open defects (improved grade II).

Panel size

Thin ply construction standard sizes: 1200/1220/1250/1500/1525 x 1200/2400/2440/2500/3050 mm
also long grained 2400/2440/2500 x 1200/1220/1250 available
Other sizes on special request. 
Max panel size: 1525 x 3660 mm

Thick ply construction standard sizes:
Length from 2400 to 2500 mm
Length from 2700 mm
Width from 1200 to 1250 mm
Tongued and grooved 2400/2440 x 600/1200 mm

Size tolerances according to the Handbook of Finnish Plywood.

Thicknesses and weights

Nominal thickness 
(mm)
Number of plies ​ ​Thickness (mm) ​ Weight (kg/m2) abt ​
  Thick  ply - Thin ply min - max. ​Thick ply - Thin ply
5    ​- 3 4.8 - 5.6      - 2.6
9 ​3 - 5 ​8.8 - 9.5 ​4.1 - 4.5
12 ​5 - 7 ​11.5 - 12.5 ​5.5 - 6.4
15 ​5  - 7 ​14.3 - 15.3 ​6.8 - 7.3
18 ​7 - 9 ​17.1 - 18.1 ​8.6 - 8.7
21 ​7 - 11 ​20.0 - 20.9 ​9.7 - 10.3
24 ​9 - 13  ​22.9 - 23.7 ​11.0 - 11.0
27 ​9 - 13 ​25.2 - 26.8 12.0​ - 13.3
30 ​   - 15 ​28.1 - 29.9 ​        - 14.5

Other thicknesses (up to 50 mm) and constructions available on request.