Resistance of pine and spruce against decay – The effect of wood chemical composition and coating with water-borne wood oil product

Hannu Viitanen, Sini Metsä-Kortelainen, Tapio Laakso

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Natural durability of wood has been widely studied, but the combination of the natural durability and different treatments has not been the focus of many studies. The durability of wooden products is mainly based on the water permeability and the resistance against organisms. In this study, the water absorption and decay resistance of sapwood and heartwood of Scots pine and Norway spruce were examined. The effects of the wood origin and the coating with water-borne wood oil were also observed. The wood oil is penetrating treatment which is recommended for decking and garden furniture. The results were compared to the chemical composition of wood. The water absorption of untreated pine sapwood was significantly higher than that of pine heartwood or spruce. Decay resistance of pine heartwood was relatively high. However, the decay resistance was widely varied among different pine heartwood samples and in some cases this variation was significantly higher than that of pine sapwood or spruce. The effect of wood oil coating on decay resistance of pine heartwood was more significant than on pine sapwood. Elevated decay resistance was also found among coated spruce samples, but no significant difference between sap and heartwood was found. Decay resistance was comparable with water permeability and pinosylvin content of wood.
Original languageEnglish
Title of host publicationInternational Research Group on Wood Preservation (IRG) Conference
Place of PublicationIRG Secretariat
Number of pages10
Publication statusPublished - 2006
MoE publication typeB3 Non-refereed article in conference proceedings
EventInternational Research Group on Wood Preservation (IRG) Conference - Tromsø, Norway
Duration: 18 Jun 200622 Jun 2006

Publication series

SeriesIRG Documents
NumberIRG/WP 06-10597

Conference

ConferenceInternational Research Group on Wood Preservation (IRG) Conference
CountryNorway
CityTromsø
Period18/06/0622/06/06

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Keywords

  • Brown rot
  • Chemical composition
  • Decay resistance
  • Durability
  • Pine
  • Spruce
  • Water absorption
  • Wood oil treatment

Cite this

Viitanen, H., Metsä-Kortelainen, S., & Laakso, T. (2006). Resistance of pine and spruce against decay – The effect of wood chemical composition and coating with water-borne wood oil product. In International Research Group on Wood Preservation (IRG) Conference IRG Documents, No. IRG/WP 06-10597