WISA-Roof is a spruce plywood with strength oriented construction designed for load bearing roofing sub-structures. The unsanded face gives better grip on the roofing site and thereby decreases the risk of accidents. WISA-Roof is surface treated which gives protection during construction work. This quick and easy to install panel saves time and money - the most valuable inputs you have.


  • Non-slip face
  • Surface treated against wood colouring and decaying fungi
  • Quick and easy to install
  • Strength oriented construction


  • Roofing sub–structures
  • Flooring sub–structures


Weather resistant glueing according to EN 314-2/class 3 Exterior.

Surface and edges

Surface quality is unsanded III according to the standard EN 635-3. Both surfaces are treated with a biocidal product (PT8) authorised on the EU/EEA market, in accordance with the Biocidal Products Regulation (EU) No 528/2012. This gives a good protection during construction work. The panel should be painted with suitable paint on those parts which are left visible in exterior use.

Panel size

2400 x 1200/600 mm
Size tolerances according to the Handbook of Finnish Plywood.

Thicknesses and weights

Sizes and thicknesses relating to moisture content 8 - 10 %.
Thicknesses and tolerances fulfil the EN 315 requirements, +/- 1 mm/1000 mm.