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Contact Automatic Door Expert Don King

Expert witness and consultant Don King offers his services to clients throughout the United States, Canada and worldwide.

For more information, please call Don today at 770-417-8455


You may also send Don an email at

About Don King

Thank you for the opportunity to introduce my service and earnest desire to collaborate with you regarding your current and future consultation and expert witness needs. I have over 30 years of solid experience in the intricacies of door installation, repair and sales for both residential and commercial purposes in cities and towns across the country including for county and state government facilities.


Personal injuries related to entryways can be the result of an incorrect operational design, malfunction, or defect in any of the many key components of a door. One must consider factors including door type, age of door, installation, hardware, location, elevation face location, frequency of routine and maintenance servicing, and even the building’s HVAC system. You can trust my extensive and thorough knowledge of doors and related features and functions to provide the comprehensive, detailed, objective, and accurate information so critical to your research for each case. I offer in-depth evaluation and forensic analysis of faulty door components and testing for electro-hydraulic and electro-mechanical systems to determine product defects and liability.


Go with confidence into every case preceding knowing you are fortified with accurate and definitive answers by allowing me to collaborate with you as your expert witness and door consulting specialist. I look forward to hearing from you via any of the contact methods above. Out of an abundance of respect for your limited time, please see the information provided below for the specifics of my background in sales, service, and installation of pedestrian and vehicular doors, hardware, and component parts. The lists are not all-inclusive of offerings but provide a snapshot for clarity:

Types of Doors Include:
Manual, automatic, aluminum storefront, revolving, hollow metal, wood, fire, garage, sectional, rolling steel, rolling and sliding aluminum gates, rolling grills, shutters, sliding, folding, solid tempered class (herculite), curtain wall,
and swinging

Door Hardware Include:
Panic devices, locks, door closers, hydraulic, electro-mechanical


Repair Services Provided Include:
Access control devices, mortise lock sets, cylindrical lock sets, panic devices with concealed and surface-mounted vertical rods, electrical locks, electric strikes, cipher locks, pivots, hinges, various types of surface mounts, and concealed and floor hydraulic closures


Companies Include:
Us Aluminum, Vistawall, Kawneer, Trulite, Dor-O-Matic, Keene-Monroe, Besam, Horton, Nabco/Gyro Tech, Stanley Magic Door, Overhead Door, Raynor, Windsor, Clopay, Wayne Dalton, Link Controls, and Chamberlain



AAADM Certified Inspector: Automatic Doors, 1998 and 2010. Atlas Door Repair, Inc.
AAADM Certified Inspector: Automatic Doors 2018. Continental Entrance Solutions LLC DBA Liberty Door

● Continental Entrance Solutions LLC, DBA Liberty Door Repair - Alpharetta, GA, Owner, 2015-Present
● Atlas Door Repair - Plainfield, IL, President, 2003 - 2015
● AM-PM Door Service Inc. - Lakeland, FL, Vice President, 1990 - 2002
● A 24 Hour Door Service Inc. – Lakeland, FL, President 1987 - 2003
● Minute Man Door Company - Fort Lauderdale, FL, Vice President, 1981 - 1984




I look forward to working with you   

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