InTrans / Aug 14, 2018

Selection and use of preservative-treated wood

Most wood, when exposed to continual soaking by water or when in contact with the soil, is subject to deterioration by decay fungi and insects. The heartwood of some species is resistant to decay because of natural chemicals called extractives in the wood. Species that have naturally durable heartwood include black cherry, black locust, black walnut, bur oak, cedars, osage orange, red mulberry, redwood, and white oaks. All-heartwood grades of lumber from these species can perform well under conditions of moderate decay hazard.