A door closer is a hydraulic device that pulls an open door shut at a controlled speed. Inside, a spring stores energy and oil valves set the sweep and latch speed. When the closer works, the door shuts gently and latches every time. When it fails, doors slam, drift open, or leave fire doors unlatched. Our technicians repair, adjust, and replace closers for offices, schools, hospitals, hotels, and government buildings across Maryland, DC, and Northern Virginia, so every opening stays safe, quiet, and fully secure.
Under ADA rules, a door with a closer must take at least five seconds to swing from 90 degrees open to 12 degrees from the latch. Interior doors should open with no more than five pounds of force. Fire-rated doors must close and latch on their own. We test and adjust each closer so your building is ready for inspection. Request a free estimate, or call our team today for fast service anywhere in the DMV.
Each type of door closer needs its own setup and repair skills. Choose your hardware type below to learn more. We service surface-mounted closers, concealed overhead closers, floor closers for glass doors, and low-energy automatic operators. We also replace worn units with ANSI Grade 1 closers, which are tested to two million cycles for busy commercial entrances, lobbies, and hallways.
Concealed door closers keep door control hardware hidden in the frame or floor. King Locksmith and Doors Inc. installs and services overhead concealed and floor-spring closers across the DMV.
Door coordinators control double door closing sequence and fire code compliance. Expert installation, repair, and replacement in Maryland, DC, and Northern Virginia. Free site assessments.
Secure your facility with professional door hold-open devices. We install and service wall, floor, and electromagnetic holders for businesses in the DMV area. Ensure safety and compliance.
Floor closers hide below the floor to control glass and pivot doors. Learn how to choose, maintain and repair them, and get expert service from King Locksmith in MD, DC and Northern VA.
Overhead stops and holders for commercial doors in Maryland, DC & Northern Virginia. Limit swing damage, control traffic, and meet fire code requirements. Professional installation and repair.
King Locksmith and Doors Inc. installs, adjusts and repairs parallel arm door closers for commercial doors across Maryland, DC and Northern Virginia, built to meet ADA and fire codes.
Regular arm door closers give busy doors full closing power. Learn how to size, grade, and maintain them, and get expert installation and repair in Maryland, DC, and Northern Virginia.
Surface door closers keep commercial doors closing safely, quietly and to code. King Locksmith and Doors installs, repairs and adjusts them across Maryland, DC and Northern Virginia.
Top jamb door closers mount on the frame header, not the door. See how to choose the right model, spot common failures, and get commercial installation across Maryland, DC and Virginia.
Yes. Most hydraulic closers have separate valves for sweep speed, latch speed, and backcheck, plus a spring power setting. We adjust these so the door takes at least five seconds to close from 90 to 12 degrees and stays within ADA opening force limits.
It depends on door weight, traffic, and style. Surface-mounted closers suit most metal and wood doors. Concealed and floor closers fit glass storefronts and lobbies. For high-traffic entries in offices, hospitals, and hotels, we recommend ANSI Grade 1 closers.
Yes. King Locksmith and Doors Inc. serves businesses, government agencies, healthcare facilities, and property managers throughout the Washington metropolitan area. We give a free, upfront estimate before any work begins. Call (240) 345-1455 to schedule service.
Door closers work best with the right hardware around them. Explore our other door hardware services, including locks, hinges, and exit devices, to keep every opening secure and code compliant.
