Permeability

June 9th, 2017

Permeability refers to the ease with which liquids (e.g. preservatives or flame retardants) can be impregnated into timber, or it refers to the degree to which untreated wood soaks up moisture.  Permeability varies between tree species, although the sapwood of all species is more permeable than the heartwood, as this is the trees feeding mechanism for transporting nutrients.  Permeability ratings relate to the heartwood of the species.

Last Modified / Updated on: March 17, 2017 at 4:35 pm

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