WISA-SpruceFR is a fire-retardant plywood product for use in construction. The fire retardant treatment significantly improves fire resistance properties of the product without compromising
the plywood panel’s excellent technical performance. WISA-SpruceFR works equally as well as the base product – WISA-Spruce – in all kind of construction, especially in structural uses and load bearing structures.


  • Fire-retardart
  • Highest fire classification a wood based panel can get
  • Sustainable
  • Lightweight
  • End-uses
  • Construction, especially strucural uses and load bearing structures
  • Temporary building

Fire classification

According to standard EN 13501-1:

  • B-s1, d0 (roof and wall structures)
  • Bfl-s1 (floors)


Weather resistant gluing according to EN 314-2/class 3 Exterior. WISA-Spruce fulfils the requirements of EN 13986 E1 low formaldehyde emission class.


Face veneer grades II and III (comply with standard EN 635-3).
Additional grade G (improved/solid grade II).
Fire retardant treatment is applied on both surfaces.


T & G on request

Standard panel sizes (mm)

Length from 2400 to 2500 mm
Width from 1200 to 1250 mm

Read more on WISA-SpruceFR.

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