Three Types Of Wood Preservatives

Common treated wood preservative protection categories marine organisms dock pier pilings fire retardant treated wood frtw.

Three types of wood preservatives.

There are three principal varieties of wood preservatives available at the moment and they are. Chromated arsenicals contains copper and some combination of chromium and or arsenic. Each has distinct advantages and drawbacks and each should be used in specific though occasionally overlapping circumstances. Water borne preservatives oil borne preservatives and light organic solvent preservatives.

These wood preservatives are. Ammoniacal copper zinc arsenate acza 3 types of chromated copper arsenate cca and others. Type a is no longer used in the united states. Examples include acid copper chromate acc.

Creosote have been historically used as a treatment for outdoor wood structures to prevent rot such as railroad ties and bridgework. Water borne preservatives are included in specifications for items such as lumber timber posts building foundations poles and pilings. The method of treating wood involves placing timber in a sealed chamber and applying a vacuum to remove air and moisture.