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Frequently Asked Questions about Wood Preservation

More Information

Click for more information on the topics below:

	Topical Publication Lists
	o	Acid copper chromate (ACC)
	o	Alkaline copper quat (ACQ)
	o	Ammoniacal copper citrate (CC)
	o	Copper azole (CBA-A or CA-B)
	o	Copper dimethyldithiocarbamate (CDDC)
	o	Environmental impacts of treated wood and methods to reduce the impacts
	o	Disposal and reuse of treated wood
	o	Natural durability
	o	Control of moisture in buildings
	o	Experimental preservative treatments
	o	Research methodologies in the field of wood preservation
	o	Effect of preservative treatment on mechanical properties
	o	Wood products production and consumption
	o	Field treatment

	Links to other sources
	o	American Wood-Preservers' Association (http://www.awpa.com/)
	o	Forintek Canada Corp./ Canadian Wood Council (http://www.durable- wood.com
	o	Southern Pine Council (http://www.southern pine.com/)
	o	Western Wood Preservers Institute (http://www.wwp institute.org/)
	o	U.S. Environmental Protection Agency (http://www.epa.gov/)
	o	US Forest Service, Forest Products Laboratory (http://www.fpl.fs.fed.us/)

	FPL Publications
	Recent FPL Publications are generally availabe from our Web site at http://www.fpl.fs.fed.us/ publications.html as PDF files. The most recent FPL publications are listed in "Dividends from Wood Research," FPL's semiannual listing of new publications. Sections of the listing relevant to wood preservation are "Durability" and "Decay Processes and Bioprocessing."
	o	Most recent issue
	o	Cumulative list (January 1996 to present)
	Two chapters of the Wood Handbook are particularly relevant:
	o	Wood Preservation, Chapter 14
	o	Biodeterioration of Wood, Chapter 13
Send comments to: Carol Clausen, Project Leader Wood Preservation US Forest Service, Forest Products Laboratory One Gifford Pinchot Drive Madison, WI 53726-2398 cclausen@fs.fed.us top of page

Q: Has FPL evaluated these treated wood products?

FPL has only limited data on the recently developed preservatives. Some are included in studies that will be published when the 5-year field plot data are available. Durability data on new preservatives are included in submittals to AWPA as part of the process of having preservatives standardized by AWPA. Such evaluations of new preservatives are conducted by the individual companies themselves or are contracted out to other parties.

The overall FPL research program is discussed at the question, What research is FPL doing on wood preservatives?. The major FPL publication of FPL data on effectiveness of wood preservatives is Comparison of Wood Preservatives in Stake Tests--2000 Progress Report, Research Note FPL-RN-002. The last published edition is dated 2000. A new edition is planned for 2003. This publication includes data on the effectiveness of treatments against decay fungi and termites, including Formosan termites.

For titles of and links to FPL publications relevant to specific preservatives, click on the preservative name below.

Acid Copper Chromate (ACC)

Alkaline Copper Quat (ACQ)

Ammoniacal Copper Citrate (CC)

Copper Azole (CBA-A or CA-B)

Copper dimethyldithiocarbamate (CDDC)

Frequently Asked Questions

The first questions address new restrictions on the use of CCA-treated wood and the available alternatives. Then other frequently asked questions on wood preservation and related topics are also addressed. With few exceptions, references in this document were limited to publications of the Forest Products Laboratory. These answers are not intended to represent a complete review of the available literature.