Copper OK for use with treated lumber

Copper OK for use with treated lumber

In the January story “Over and Out” (page 20), we relayed information that indicated that the new treated lumber products, ACQ and copper azole, should not be used in contact with copper-based metals. Since then we have learned that the information provided was incorrect. Please note that copper and copper-based products can be used with today’s copper-based pressure treated woods. We regret the error.

Joe Lincourt, vice president of Sanford, Maine-based York Mfg., a manufacturer of copper flashing, suggests that treated lumber installers confused by what metals are safe for use with each other can start by looking at a galvanic scale, which can help determine what metals will react more with others based on where they fall on the scale. From there, installers should continue to check with fastener and other metal vendors to ensure that metals can be used in combination. York Mfg. features the galvanic scale and more information on its Web site at www.yorkmfg.com (click on “York Residential,” and then on “Technical”).

COPYRIGHT 2004 Hanley-Wood, Inc.

COPYRIGHT 2004 Gale Group