What is ACQ Lumber?
ACQ is a copper based preservative system that is the most cost-effective alternative to CCA. ACQ has been researched and tested since the late 1980’s. It was introduced commercially in 1992. ACQ provides dependable performance and is building code compliant ( NER 628). It treats a wider range softwood lumber species, and is quality assured by a third party (TPI or SPIB). Like CCA, it is treated against decay and insect damage.
