Copper Pipe And Pressure Treated Wood

Copper azole treated wood is suitable for a broad range of common applications.

Copper pipe and pressure treated wood.

Despite cca s track record as an effective economical wood preservative its safety has long been questioned by health and environmental advocates. Is acq and ca pressure treated lumber safe. The copper deters insects and the fungicide prevents soil rotting the lumber. The active ingredients commonly used in treated wood are alkaline copper quaternary acq copper azole ca or micronized copper azole mca.

The chemicals including chromated copper arsenate cca that were used to treat wood in the u s. Copper is the culprit. Health concerns for chromated copper arsenate cca pressure treated lumber. And its makeup is simpler than you may have guessed.

And its makeup is simpler than you may have guessed. High copper content in the preserved wood was in contact with galvanized fasteners and hardware dissimilar metals. At universal forest products we treat our prowood micro ca pressure treated lumber with a formulation known as micronized copper azole or mca. I think that the risks with ca and acq pressure treated wood are minimal.

This results in a galvanic corro. Waterborne preservatives containing copper salts can cause corrosion because of small quantities of solu ble copper ions. Hot dip galvanized steel and stainless steel. Their primary focus has been cca s heavy concentration of arsenic a known carcinogen.

The two most popular chemicals for wood pressure treatment are alkaline copper quaternary acq and copper azole ca which are both active corrosion materials. Applications for ca treated wood. Since most pressure treated lumber is used where moisture is present outdoors crawl spaces and basements the perfect storm for galvanic corrosion was created. Corrosion in moist treated wood is probably directly related to the presence of copper ions because of deposition by copper ions on a more elec tronegative fastener.

Only two corrosion protection systems are recommended for use with these pressure treatment chemicals. Pressure treated wood is a popular product for outdoor construction i e. Cca treated wood remains the best choice for marine piling seawalls and other applications exposed to salt對water organisms 爀屲break apart. However it is not approved at this time for s ൡltwater immersion.