Lumber Goffstown NH
Custom Builder, Designer / Architect, Remodeler
Certified New Hampshire Builder, Home Builders & Remodelers Association of New Hampshire, NAHB Certified Graduate Remodeler, National Association of Home Builders, National Remodelors Council
A Brush with Life
Remodeling, Construction, Home Repair
Freedom Advanced Electric, LLC
What The Tags Tell You
The plastic tags attached to the ends of treated lumber give some important basic information about the treated lumber. The format of these tags varies depending on the manufacturer, but typically you will see:
The manufacturer or treater of the lumber.
The type of wood preservative used. For CCA-treated wood, you'll see "CCA-C." The "-C" refers to the type of CCA. There are three types of CCA (Types A, B and C), but only type C is used for lumber treatment.
The retention of preservative and type of intended use. A retention of 0.40 pcf (pounds per cubic foot) is meant for applications where the wood will be in contact with soil (fence posts or deck columns, for instance). A lower retention (0.25 pcf) is intended for above-ground applications such as joists, decking and railing.
The American Wood-Preservers' Association (AWPA) standard that was followed for the treatment. The AWPA is a trade organization made up of treaters, chemical manufacturers, government organizations and universities. Its standards list the acceptable wood preservatives and manufacturing processes, plus analytical methods and methods to evaluate performance of wood preservatives. Sometimes you will see the term "Treated to Refusal" on the tag. This usually means the wood was treated with as much preservative as possible, but it still couldn't meet the AWPA standard requirements. Expect poorer performance from lumber labeled with this term. Under the industry's new consumer awareness, the end tags will be larger and also list a summary of recommended handling precautions.