Reliable choice for load-bearing wall structures
WISA-Spruce and the fire retardand WISA-SpruceFR are well suited as materials for load-bearing structures and for structural purposes. Square-edged panels are typically used in wall structures.
The thickness of the board depends on the intended use and local building regulations. The thickness of spruce plywood used as wall material, is most often between 9 to 18 mm. Always check the local building regulations for the right thickness.