Residential and Commercial garage door repair Bethesda Montgomery County MD

Bethesda Maryland Professional Garage Door
Sales – Repair – Installation – Service Maintenance

A broken garage door can be the result of years of wear on your door mechanisms or the sudden break of your door or door opener hardware. Whatever the cause, a malfunctioning garage door can seriously affect your schedule and your garage security.

Our specially trained technicians handle a variety of garage brands, styles, and configurations. After arriving at your home, a Diamond Garage Doors technician will diagnose the problem and walk you through the options for fixing or replacing it. Our technicians make any necessary adjustments or replace broken parts to ensure the door is once again operational and secure. Our service goal is to complete repairs in a single day. Get your free estimate today.


Repair or replace the following garage door parts in Bethesda Maryland:



  • Cables
  • Garage Door Springs
  • Rollers
  • Cables
  • Hinges
  • Track Adjustment & Replacement
  • Door Weather Seals
  • Torsion Spring Conversions
  • Garage Door Openers
  • Emergency Repair Services

Jon Rosenthal Bethesda MD Garage Door




Repairs and Maintenance


Annual garage door tune-up service help prevent emergencies. Our processional safety check includes track lubrication and track adjustments. Just as with other complex machinery, your garage door requires routine maintenance to ensure proper and safe operation. Doors need to work in a synchronized manner to raise and lower the door properly. Over time and different weather conditions doors do get out of adjustment. Such situations can cause premature breakage and an emergency repair need.

Our professional garage door technicians inspect your garage’s door panels, springs, sensors, safety release, hardware, track, and other necessary parts. Our trained and experienced technicians perform this inspection to ensure they’ve done their repair work correctly, and to identify any potentially troublesome garage mechanisms that could become serious problems. If a problem is identified, you will be advised of corrective options.


  • Align Electronic Eyes
  • Broken Garage Door Springs or Cables
  • Garage Door Off Track
  • Garage Door Opener Installation

  • Garage Door Rebalancing
  • Garage Door Tune Up & Maintenance
  • Lubricate Garage Door Opener Chains and Sprockets
  • Test Down Force Pressure of Garage Door

Diamond Garage Doors serves residents and businesses with all garage door needs throughout the Potomac Maryland area including those along interstate 495/the Capital Beltway, River Road, Falls Road, Bradley Blvd. S. Glen Road, Democracy Blvd., Seven Locks Road, Persimmon Tree Road, Brickyard Rd., and Oaklyn Drive. Areas like Carderock, Carderock Springs, Westlake, Ashleigh, Wildwood hills, and Willerburn Acres as well.



Customer Reviews


★★★★★ Mark Smith - Potomac, MD
Jon was very responsive. Came over quickly to take a look at the work done. Provided a number of options and then was able to schedule the work to be done the next day. His team worked quickly and did a great job on the two new garage doors that I had installed. I would highly recommend his company and use them again in the future.

★★★★★ Christine Gschwend - Potomac, MD
Diamond Garage responded immediately to an email I sent. We set up a date and I asked them to call 30 minutes prior to their arrival, which they did. They explained the work that needed to be done and gave me prices. The garage door opener was replaced as well as the springs and track wheels. They were very courteous and efficient. I thought the price was fair.

★★★★★ Zahir Albadawi - Potomac, MD
John is a very concerned, knowledgeable, and expert guy. When I asked his opinion about different models of openers he provided me a variety of useful information about each model with its cons and pros. Jon did a neat job in installation and wiring of my new garage door opener. Very happy with his service, quality of the job and the most important one, his honesty. I highly recommend him. John changed our garage door opener, changed the rollers and tuned the door.