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Dimensional Stability of Specialty Species (final report)

By Rosie Sargent, Gavin Durbin, December 2019.

Download SWP-T090 (pdf)

Executive summary

Changes in the moisture content of wood changes its dimensions. The magnitude of these changes (dimensional stability) can have a large impact on how the wood performs in service. Poor dimensional stability can lead to cracking, poor paint adhesion and problems with clearances in moving parts like doors and windows. To better understand how wood will behave in service, the dimensional stability of 16 different wood types were compared (8 species, plus variations such as modified wood, or different tree ages).

Two tests were used, one using short term contact with liquid water, and one exposing the wood to different air humidities.


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