Commercial locksmith
A closer that slams, leaks fluid, or leaves the door hanging open is a liability. We adjust, repair, or replace it the same day.
Door closer repair and installation
A door closer looks like a small detail until it fails. When the closing speed is off, a heavy commercial door slams hard enough to startle customers and crack glass sidelites. When the latch speed is too slow, the door hangs inches from the frame and the latch never seats, leaving the building unsecured. When hydraulic fluid starts leeping from the body, the closer has weeks left before it quits entirely.
J&M Locksmith has been servicing door closers for Atlanta businesses since 2013. We work on surface-mounted overhead closers, concealed overhead closers, and floor-spring closers. We adjust the valves for closing speed, latch speed, and backcheck, and we can set the opening force to meet ADA requirements for your application. When adjustment is not enough, we replace the unit and dispose of the old one.
Most closer complaints come down to a few valve adjustments. The closing speed valve controls how fast the door swings from open to nearly closed. The latch speed valve controls the final few degrees so the bolt seats firmly without a slam. The backcheck valve cushions the door at full open so it does not bang into a wall. All three are accessible on the closer body with a small hex key, and adjusting them takes minutes when you know where to find them.
Replacement is the right call when the closer body is cracked, when fluid has leaked out and the arm moves with no resistance, or when the unit is so old that parts are no longer available. We carry the common LCN, Dorma, Norton, and Sargent closer bodies on the van so most replacements happen on the first visit without waiting on a parts order.
ADA requires that interior hinged doors on accessible routes open with no more than 5 lbf of force. Exterior doors are not capped by ADA, but many local codes and leases specify a maximum. A closer set too tight pushes the door into violation and can trigger a complaint or a failed inspection.
Fire-rated doors present a different requirement: the door must be self-closing and self-latching at all times. A closer that does not pull the door fully closed defeats the fire rating of the assembly. If a fire marshal or your insurer flags a self-closing door that is propped or not latching, the closer is almost always the culprit. We test the full close-and-latch cycle before we leave.
Door closers are not only a commercial item. Screen doors, garage entry doors, and patio doors in residential settings often use a lighter-duty surface-mounted closer to prevent slamming and keep the door from blowing open in the wind. We install and adjust residential closers using the same process: right unit for the door weight, valves tuned to the door, tested before we leave.
Closer types we service
The closer type determines the adjustment points and the replacement options. We work on all four common configurations found on Atlanta commercial and residential doors.
The most common type on commercial doors. A cast-iron or aluminum body mounts to the door face or the frame head, with an articulating arm connecting to the opposite surface. Closing speed, latch speed, and backcheck are all field-adjustable. Brands include LCN, Dorma, Norton, Sargent, and Yale.
The closer mechanism sits inside the door or frame so nothing is visible from the corridor. Common on glass storefronts and high-end interior doors where appearance matters. Adjustment requires removing a cover plate, but the valves work the same way as surface-mounted units.
A hydraulic spring mechanism recessed into the floor beneath the door, used on heavy glass or aluminum doors that swing from a center or offset pivot. Adjustment covers closing speed and latching force. Floor springs on high-traffic doors wear faster than overhead units and may need rebuilding or replacement every several years.
Not every closer call ends in replacement. We adjust the closing speed, latch speed, and backcheck valves and test the full cycle. We re-anchor loose mounting screws, replace a bent or stripped arm, and patch minor fluid seeps with a new end-cap seal when the body itself is sound.
How it works
We match the fix to the actual failure. You know the price and the plan before we pick up a tool, and we carry the common closer bodies so most replacements close out the same day.
Tell us the door type (steel, aluminum storefront, glass, wood) and what the closer is doing. A few questions help us arrive with the right replacement unit if one is needed.
Based on what you describe, we give you a price range before we dispatch. Final price is confirmed on site after we assess the closer in person.
We check all three valve settings and the mounting hardware. If adjustment solves it, we set the valves and test. If the closer needs replacement, we walk you through the options and your approval before we start.
We cycle the door at least five times to confirm the closing speed is smooth, the latch seats every time, and the backcheck cushions at full open. ADA force is measured if requested.
Cost and options
Most closer adjustments run $95 to $145. A full closer replacement, including the new unit and installation, typically runs $175 to $325 depending on the closer type, mounting configuration, and whether a specialty bracket is needed. Floor-spring replacements tend to run higher because of the floor work involved.
The price we quote on the phone covers the trip and the diagnostic. If the closer needs replacement and the cost runs beyond the initial quote, we tell you before we pull the old unit. Nothing gets installed without your go-ahead.
Final price confirmed before work starts. The phone quote includes the trip. Replacement parts beyond what was described are approved by you before installation.
Why call J&M
A door closer that does not work is a security issue on a commercial door and a fire-code issue on a rated assembly. You want the repair done right the first time by someone who carries the parts and knows the adjustment procedure. J&M Locksmith has been servicing door hardware for Atlanta businesses since 2013. We are insured, NASTF registered, and 1-800-Unlocks verified, and we carry a COI for property managers and building owners who need documentation before we touch their property.
4920 Roswell Rd Suite 42 in Atlanta. In business since 2013, with mobile service across the metro area.
Insured and 1-800-Unlocks verified. We provide a certificate of insurance for property managers and commercial tenants on request.
We start with the valves, not the parts catalog. If an adjustment holds, that is what we do. If the closer is beyond saving, we tell you before we quote a replacement.
Reviews
Real, unedited Google reviews from neighbors across metro Atlanta. Our 4.7-star rating from 203 reviews comes down to two things: we show up fast, and we charge what we quoted.
Service areas
J&M Locksmith is based near the Roswell Road corridor and sends mobile vans throughout Atlanta and nearby communities. Response time depends on traffic, weather, and the job before yours, so call for the most accurate ETA.
Visit our shop
Need keys, lock hardware, or in-person help? Visit J&M Locksmith at 4920 Roswell Rd Suite 42, Atlanta, GA 30342. For lockouts and mobile jobs, call first so we can send a technician directly to you.
FAQ
These answers cover what we hear most. A quick call is still the fastest way to confirm the details for your exact situation.
Yes, in most cases. Slamming is almost always a closing-speed or latch-speed valve that is set too fast. We adjust the valves on site and test the full cycle. Replacement is only needed when the body is cracked, the fluid has leaked out, or the arm is damaged beyond repair.
If the arm moves with little or no resistance, hydraulic fluid has likely leaked out and the closer body is spent. Visible fluid streaks on the closer body or the door face are a sign the seals have failed. Cracks in the casting also mean replacement. Everything else, including a door that slams, closes too slowly, or does not latch, is usually an adjustment.
Both. We install and adjust surface-mounted closers on residential screen doors, garage entry doors, and patio doors. The process is the same: right unit for the door weight, valves tuned correctly, tested before we leave.
Almost always, yes. A fire door that does not self-close and self-latch is a code violation and defeats the fire rating of the assembly. The closer is the component responsible for pulling it closed. We check the valves first, then the arm, and replace the unit if it cannot be adjusted to close and latch reliably.
Yes. ADA caps interior door opening force at 5 lbf on accessible routes. We adjust the closer spring tension and check the force with a gauge. If the closer cannot be adjusted low enough while still closing reliably, we recommend a unit rated for ADA applications.
We stock the common surface-mounted closer bodies from LCN, Dorma, Norton, and Sargent. Most standard replacements happen on the first visit. Concealed overhead closers and floor springs may require ordering the specific model, which we confirm on the phone before scheduling.
All services
We are a full-service locksmith for homes, businesses, and vehicles across metro Atlanta. Whatever the lock, key, or door problem, there is a good chance it falls under one of the categories below, and the same local team handles all of it.
Lockouts, rekeying, new locks, and home security hardware.
View residentialAccess control, master keys, high-security locks, and doors.
View commercialCar keys, lockouts, fobs, transponders, and spare keys.
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