Acq Treated Hardwood

Water based preservatives like acq leave a dry paintable surface.

Acq treated hardwood.

10 forms of copper may vary in toxicity. 100x75 x 2 4m 100x100 x 2 4m 100x100 x 3 0m. Acq alkaline copper quaternary is a water based wood preservative that prevents decay from fungi and insects i e it is a fungicide and insecticide. Chromium vi is not likely to be on surfaces of treated wood.

It is necessary to use fasteners meeting or exceeding requirements for astm a 153 class d such as ceramic coated as mere galvanized and even common grades of stainless steel corrode. Luckily acq treated pine has proven to be an inexpensive but effective alternative. 8 while treated wood dries most chromium vi changes to another form chromium iii. 11 acq ca mca and mcq contain copper but also other ingredients not discussed in this fact sheet.

It also has relatively low risks based on its components of copper oxide and quaternary ammonium compounds. Acq treated pine is classified as a softwood but is still durable. Began mandating the use of non arsenic. The treatment provides protection against termites and rotting.

Toxicity studies with micronized forms of copper are available. Acq is an eco friendly alternative to other timber containing chromium or arsenic. Preserve acq alkaline copper quaternary acq is a water based wood preservative formulation made of soluble copper and a quaternary compound. Since it contains high levels of copper acq treated timber is five times more corrosive to common steel.

In fact most state governments and local councils have chosen to err on the side of. Alkaline copper quaternary usually abbreviated acq is a type of water based wood preservative product containing a soluble copper ii complex and quaternary ammonium alkyl or aryl substituted compounds quats thus the product was originally called ammoniacal copper quaternary ammonium. Acq h4 landscaping hardwood. Cca treated timber cannot be used for garden furniture picnic tables exterior seating children s play equipment patio and domestic decking and hand rails.

Alternative treatment such as naturewood acq is approved for use in these applications. The evidence against the use of cca treated timber isn t strong but the simple fact is that lots of people don t trust it won t trust it and won t use it because arsenate is one of the compounds used in the manufacture of cca. Those who would like treated timber for timber decking in brisbane are not allowed to use cca treated timber.