MEMBER Wood Products;

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MEMBER Forest Operations; Pulp, Paper and Bioproducts;

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The appearance of wood products used outdoors can be degraded by weathering, which results from light exposure, moisture cycling and biological activity. While weathering seldom leads to functional failure, it often defines the service life of the product, as people choose to replace weathered wood sooner than functionally required. Technologies that protect against weathering are needed to extend the service life of outdoor wood products and thereby enhance competitiveness and sustainability. The aim of the present work is to develop treatments that stabilize wood colour and increase its resistance to black stain fungi. Treatment with micronized basic copper carbonate followed by exposure to hydrogen peroxide led to an attractive mid brown colour. This treatment had similar colour stability and erosion resistance as an iron oxide colourant reference and greater black stain resistance. Further work is needed to assess the commercial feasibility of this method.


  • Open to all
  • Wood products member
  • Pulp, paper and bioproducts member
  • Forest operations member