Painting Copper Azole Treated Wood
Pressure treated lumber has been treated with chemical preservatives to help prevent rot and insect damage.
Painting copper azole treated wood. An acrylic based latex primer is also recommended for painting pressure treated wood. Micronized copper azole penetrates into and remains in pressure treated wood for a long time. The copper deters insects and the fungicide prevents soil rotting the lumber. The primer provides a set surface for painting eliminating the need for multiple coats of paint color.
Similar to cca treated and untreated wood. Follow the safe practices listed below when working with pressure treated wood. And an outdoor project s not finished until it s been stained sealed or painted. Characteristics of the micronized copper preservative.
Note that while priming and painting pressure treated wood may be easiest with a paint sprayer opt for a brush or use both in combination if the job entails detail work. Ca is a water based preservative that can be cleaned and painted. Copper azole treated wood is suitable for a broad range of common applications. The active ingredients commonly used in treated wood are alkaline copper quaternary acq copper azole ca or micronized copper azole mca.
However some preservative may migrate from the pressure treated wood into surrounding soil over time and there may be incidental contact with skin during construction or use. Sealing painting and staining pressure treated wood a project s not really done until it s finished. You probably know that wood swells when it gets wet and shrinks when it dries. Pressure treated wood has gone through a process that uses high pressure to force a solution of water and preservative agents deep into the lumber to help extend its useful lifespan.
Copper azole treatments contain copper boric acid and tebuconazole type b does not contain boric acid. Paints need to be acrylic based latex exterior use for cca treated wood exterior or interior use for acq treated wood. Cca treated wood remains the best choice for marine piling seawalls and other applications exposed to salt對water organisms 爀屲break apart. Copper azole and alkaline copper quaternary treatments both contain a fungicide.
Consumers have fallen in love with the lighter more natural appearance of micronized copper treated products as well as their improved painting and staining capabilities. However it is not approved at this time for s ൡltwater immersion.