WISA Plywood

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    WISA®-SpruceFR is UPM’s all-in-one solution for sustainable fire retardant building with plywood.

    UPM Plywood introduces a new fire retardant WISA-SpruceFR structural plywood for building and construction end uses. WISA-SpruceFR combines the market leading quality and structural performance with B-s1, d0 fire classification – the highest a wood product can have.

    “This is uniquely different type of plywood product released to the market,” says Riku Härkönen, Product Manager at UPM Plywood. “There are products which are either extremely expensive, pressure treated, or they come with conditions and requirements for other structural solutions,” Härkönen describes.

    Unlike in many other fire-resistant wooden products, the fire-retardant treatment in WISA-SpruceFR does not compromise the plywood’s technical properties; the panels preserve the original qualities of untreated WISA-Spruce plywood. Also, different from many other wood panels, WISA-SpruceFR does not require any special structural design to achieve the fire classification. It can be used just like a regular plywood panel.

    “A significant development is that WISA-SpruceFR can be installed leaving air gaps between the panel and other structures and insulation and still retain the product’s fire-retardant properties and classification,” says Härkönen. The fact that the fire-retardant treatment is already applied on the panels during manufacturing is a substantial benefit for contractors and developers. It saves time, material and costs in various project phases,” Härkönen points out. “For a customer this means efficiency made easy as fire retardant properties can be built into a normal structure”.



    Fire retardant, sustainable, functional.

    WISA®-SpruceFR is a new fire retardant plywood. It comes with the highest fire classification possible for wood based material and it’s a sustainable and functional choice. It offers the technical performance of our existing plywood enhanced with a fire retardant treatment.


    For architects & engineers

    The new plywood offers a fire retardant cost competitive, simple, sustainable and safe to use plywood panel. It allows a smoother and simpler design process with less bureaucracy in the approval processes. One structural element is all that’s needed to cover the fire safety requirements. The reliable, strong building material fulfills the B-s1,d0 fire classification and at the same time has full structural performance.

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    For builders

    WISA®-SpruceFR saves material costs, installation time and storage. Moreover, the time-consuming approval processes can be simplified. It offers a cost-effective alternative to traditional, complex and time consuming multilayer solutions. Storing, handling and installing a single product instead of several materials is naturally quicker and easier.

    WISA-SpruceFR Fact sheet – 240 KB

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