Acq Treated Hardwood

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.

Acq treated hardwood.

Acq h4 landscaping hardwood. Preserve acq alkaline copper quaternary acq is a water based wood preservative formulation made of soluble copper and a quaternary compound. 10 forms of copper may vary in toxicity. In fact most state governments and local councils have chosen to err on the side of.

Cca treated timber cannot be used for garden furniture picnic tables exterior seating children s play equipment patio and domestic decking and hand rails. The soluble copper makes the wood very resistant to biological attack and a quaternary ammonium compound quat acts as biocide and insecticide increasing the tolerance of the treated lumber to. Luckily acq treated pine has proven to be an inexpensive but effective alternative. Acq treated pine is classified as a softwood but is still durable.

Available in the following sizes. Water based preservatives like acq leave a dry paintable surface. Acq is an eco friendly alternative to other timber containing chromium or arsenic. 8 while treated wood dries most chromium vi changes to another form chromium iii.

Chromium vi is not likely to be on surfaces of treated wood. 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. 100x75 x 2 4m 100x100 x 2 4m 100x100 x 3 0m. Began mandating the use of non arsenic.

Toxicity studies with micronized forms of copper are available. Alternative treatment such as naturewood acq is approved for use in these applications. Those who would like treated timber for timber decking in brisbane are not allowed to use cca treated timber. Since it contains high levels of copper acq treated timber is five times more corrosive to common steel.

11 acq ca mca and mcq contain copper but also other ingredients not discussed in this fact sheet. 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 alkaline copper quaternary is a water based wood preservative that prevents decay from fungi and insects i e it is a fungicide and insecticide.