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    Wood for Today's Environment

    Superior wood treating offers some of the most advanced, environmentally friendly options for lumber and plywood preservation in the market today. As a flexible, diverse, and program friendly company, it is our goal to help customers gain a competitive edge through quality products, competitive pricing, and timely service.

    Whatever the end use, SWT offers a solution.

    Located on a 30-acre, state of the art facility in Sumner, Washington, SWT produces some of the industry's leading products for the residential, commercial, and government applications. Amongst others, we offer a full line of treated decking materials, multipurpose lumber, foundation lumber and plywood, commercial timbers, and guardrail. Between stock items and TSO services SWT offers a product for nearly all applications. Check out the products page for more information.

    Backed by Manke Lumber Company

    Superior Wood Treating is owned and operated by Manke Lumber Company, a family owned business with over fifty years of hands-on experience in the wood products industry. As a subsidiary of Manke, SWT is the only treating plant in the region backed by its own sawmill production, ensuring steady inventories, a wide range of products, and the ability to customize orders. To learn more about Manke Lumber Company, click here.

    At SWT we gladly serve retail lumberyards, distributors, and wholesalers throughout the West Coast, Alaska, Hawaii, and abroad.

    Please note: Manke Lumber sells wholesale direct to retailers and is not open to the public


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