• Our Business

    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. 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 and commercial markets. As a subsidiary of Manke Lumber Company, SWT is the only treating plant in the region backed by its own sawmill production, ensuring steady supplies and a wide range of products. 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.

    We gladly serve retail lumberyards, distributors, and wholesalers on the throughout the West Coast, Alaska, Hawaii, and abroad.

    Have a look at     for more information.

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


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