Reclamation of Wood Materials Coated with Lead-Based Paint
ENGINEER RESEARCH AND DEVELOPMENT CENTER CHAMPAIGN IL CONSTRUCTION ENGINEERING RESEARCH LAB
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In this ESTCP demonstration, three wood buildings were deconstructed at Camp Roberts, CA, to salvage and reclaim valuable wood coated with lead-based paint LBP. Because the presence of LBP normally prohibits the recycling of older wood construction materials, economic value is lost, landfilling costs compound, and virgin materials are consumed unnecessarily. Wood Waste Diversion WWD of Pacific Grove, CA, demonstrated a technology that mechanically removes coatings from wood, producing clean wood feedstock while effectively sequestering lead-contaminated particulates and residues for proper disposal. The WWD mobile planing unit removed LBP coatings from redwood and Douglas fir siding materials, making them suitable for sale and reprocessing into flooring, paneling, and architectural millwork. Much of the redwood material produced in this demonstration was used in new, sustainably designed modular homes fabricated in southern California. The WWD technology performed well and economically. However, a project-unique extra cost was incurred because of a claim related to a contractor s operational decision that does not represent a fundamental technology performance issue. Also, the contractor s deconstruction process required more labor than expected, raising the total project cost. Finally, the scale of the project did not produce enough materials to attract high market interest, resulting in lower-than-expected selling prices.
- Coatings, Colorants and Finishes
- Construction Equipment, Materials and Supplies
- Solid Wastes and Pollution and Control