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Meet Diligent Overhead Door - Western New Yorks Most Competent Door Professionals.

John Zappia

The founder of diligent overhead door

UID #16000119485

NY State Certified Home Inspector

National Certified Home Inspector

InterNACHI Certified Home Inspector

Certified Garage Door Technician

Licensed and Insured

At Diligent Overhead Door we provide our clients with solid workmanship in correcting and or installing Garage Doors and Components. Each Garage Door is different but our quality workmanship will always remain the same professional, honest with an experienced Door Tech at your service.

John Zappia

President and CEO 

Diligent Overhead Door (Experts)

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