Commercial Door Closers

Commercial Door Closer Installation and Repair in Longwood, FL

Wind is one of the hardest things on a door closer in Central Florida. A strong gust catches an open door, throws it past its normal swing, and forces the closer to absorb the hit. After enough of those, the seals fail, the oil leaks, and the door starts to slam. Lion Locksmith & Security installs, replaces, and adjusts commercial door closers for businesses in Longwood and Seminole County. This is specialty work for our second-generation locksmith, and closers are among the repairs businesses request from us most.

Signs Your Commercial Door Closer Is Failing

A closer usually gives warnings before it quits. Catching them early can prevent door damage and keep the entrance safe for customers. Watch for any of the following.

• The door slams shut instead of closing smoothly
• Oil is dripping from the closer body or staining the door
• The door does not close fully or fails to latch
• The door feels unusually heavy or hard to open
• The door swings open too far or too fast in the wind
• The closer arm is loose, bent, or pulling away from the frame

A leaking closer generally cannot be refilled or resealed in the field. Once the oil is gone, replacement is the dependable fix.

Adjusting Closing Speed, Latching, and Backcheck

Hydraulic door closers control a door with oil that flows through small valves. The closing speed valve sets how fast the door travels through most of its swing. The latching speed valve controls the last few inches, so the door has enough push to latch without slamming. Backcheck adds resistance as the door opens wide, which protects the door, the frame, and the wall behind it.

Some closers also offer delayed action, which holds the door open for a few extra seconds before closing begins. That feature helps people using wheelchairs, carts, or strollers. We set each adjustment to suit the door's weight and how the entrance is used.

Matching the Closer and Mounting Style to the Door

Manufacturers size commercial door closers by spring strength, and the right size depends on the door's width, weight, and exposure to wind. Heavy-duty models are built for high-traffic entrances that open hundreds of times a day. The mounting matters too. A regular arm mount sits on the pull side of the door. A parallel arm mount sits on the push side with the arm tucked against the frame. A top jamb mount puts the closer body on the frame above the door. We choose the mount that fits your door frame and keeps the hardware out of harm's way.

Protecting Exterior Doors From Wind Damage

An entrance that faces a parking lot or sits in a wind corridor needs more than a standard setup. More backcheck and a heavy-duty closer help, and a door chain stop that limits how far the wind can throw the door open is often what makes the difference. Without that protection, a new closer on a windy entrance can fail early. We will tell you plainly when a stop is necessary, and we may not be able to warranty a closer installed on a windy entrance without one.

Regular Maintenance That Extends Closer Life

Door closers last longer when someone checks them before they fail. Loose mounting screws, a bent arm, and oil at the seals are all early signs worth catching. Surface-mounted closers are the most common type on commercial buildings and are simple to inspect. We offer maintenance and service agreements on a case-by-case basis for the closers and other commercial door hardware in your building. Catching a problem early usually costs less than an emergency call.

Keeping Doors Accessible and Up to Code

A closer that is too strong makes a door hard to open, and one that closes too quickly can strike someone passing through. Accessibility rules set limits on closing speed and opening force for many doors, and fire-rated doors must close and latch on their own. We adjust closers with those requirements in mind. When a closer is part of a larger problem, we also handle commercial door repair and service exit devices on the same door.

Our business is family-owned, bonded, insured, and background-checked. Closers we install carry our standard one-year warranty on parts and labor. Pricing is flat and quoted before the work starts.

Get Your Door Closer Fixed

We service door closers in Longwood, Casselberry, Altamonte Springs, Winter Springs, Oviedo, Lake Mary, and Sanford, and we take projects in Volusia and Lake counties. Send us a photo of the closer, the top of the door, and the frame so we can identify the model and mounting. Contact us for a free estimate, and ask about our other commercial locksmith services if your building has several doors.