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  • Aa Maintenance/Roof Pro
    Aa Maintenance/Roof Pro
    (503) 671-9200
    6775 SW 111th Ave # 203, 97008-5379  Beaverton

    Research provided by Oregon State University and the Cedar and Shake Bureau indicates that a preservative roof treatment should be applied within 3 to 12 months of original installation and every 3–5 years thereafter to enhance the natural decay-resistant extractives within the wood and to provide …