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Forest Products Laboratory
One Gifford Pinchot Drive
Madison, WI 53726-2398
Phone: (608) 231-9200
Fax: (608) 231-9592
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Method for Estimating Wood Preservative Leaching

A method was developed to estimate biocide leaching from preservative-treated wood used above aquatic habitat. USDA Forest Service
A method was developed to estimate biocide leaching from preservative-treated wood used above aquatic habitat. USDA Forest Service
Snapshot: Pressure-treated wood is widely used for construction projects in sensitive environments. This research project developed a method to estimate biocide leaching from pressure-treated wood exposed to precipitation.
Summary:

Pressure-treated wood is an economical and sustainable building material that is widely used for construction of boardwalks, trail bridges and marinas. Quantifying the expected release of the biocide into the environment is a key component of evaluating a new preservative's potential for environmental impacts. Developing accelerated methods to provide estimates of environmental release has proven challenging, especially for treated wood that is used above water and subject to leaching from precipitation. This research project developed a simple laboratory immersion method that can be used to estimate leaching from wood exposed to natural weathering. A model was developed to relate hours of immersion to amount of precipitation. Leaching estimates were conservative, and within 7 to 15 percent of losses predicted for wood exposed for five years.
Princpal Investigator(s):
 Lebow, Stan T.
 Lebow, Patricia
 Hirth, Kolby C.


Research Location:
  • Madison, Wisconsin

Fiscal Year: 2019
Highlight ID: 1324
 
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