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Frequently Asked Questions

Treating Glulam Timbers with Waterborne Preservatives

What waterborne chemicals are used to treat timbers?

The most common waterborne chemicals used to treat timbers include chromated copper arsenate (CCA) and Ammoniacal Copper Quat (ACQ). Ammoniacal Copper Zinc Arsenate (ACZA), Acid Copper Chromate (ACC) and Copper Azole are also used occasionally.

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