Copper Pipe And Pressure 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.

Copper pipe and pressure treated wood.

Applications for ca treated wood. Copper is the culprit. And its makeup is simpler than you may have guessed. The two most popular chemicals for wood pressure treatment are alkaline copper quaternary acq and copper azole ca which are both active corrosion materials.

Pressure treated wood is a popular product for outdoor construction i e. At universal forest products we treat our prowood micro ca pressure treated lumber with a formulation known as micronized copper azole or mca. However it is not approved at this time for s ൡltwater immersion. Their primary focus has been cca s heavy concentration of arsenic a known carcinogen.

This results in a galvanic corro. Hot dip galvanized steel and stainless steel. Only two corrosion protection systems are recommended for use with these pressure treatment chemicals. 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 treated wood is suitable for a broad range of common applications. I think that the risks with ca and acq pressure treated wood are minimal. And its makeup is simpler than you may have guessed. Cca treated wood remains the best choice for marine piling seawalls and other applications exposed to salt對water organisms 爀屲break apart.

Waterborne preservatives containing copper salts can cause corrosion because of small quantities of solu ble copper ions. High copper content in the preserved wood was in contact with galvanized fasteners and hardware dissimilar metals. The copper deters insects and the fungicide prevents soil rotting the lumber. Despite cca s track record as an effective economical wood preservative its safety has long been questioned by health and environmental advocates.

Manufacturers are confident of course that these treatments pose no health or environmental problems. Is acq and ca pressure treated lumber safe. Health concerns for chromated copper arsenate cca pressure treated lumber. The active ingredients commonly used in treated wood are alkaline copper quaternary acq copper azole ca or micronized copper azole mca.