William John Associates

  • Main Office

    William John Associates
    7431 Mott Ave
    Orlando, FL 32810

    (407) 521-1601 - Phone
    (407) 521-1603 - Fax

    About William John Associates

    William John Associates was founded by Doug Wallace in 1980 in response to a need for a company to provide accurate and unbiased information of a full range of roofing issues. Mr. Wallace and Mr Joel Hammock have over 60 combined years of roofing experience, and incorporate a detailed knowledge of roofing systems and installation procedures that differentiates WJA from other more theoretically oriented companies in the industry.

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