Commercial Door Closer Repair, DFW

The door closer is the part most people never think about until it fails. Then the front door slams on customers, the back door won't latch at night, or a puddle of oil shows up under the closer arm.

We repair and replace closers on storefronts, office entrances and steel back doors across Dallas-Fort Worth and North Texas. This guide explains what a closer does, the warning signs that it needs attention, what you can safely check, and how we decide between adjusting, repairing and replacing it.

Short version: a closer that slams or won't latch can often be adjusted. A closer that is leaking oil almost always needs to be replaced.

What a door closer does

A door closer controls a door on its way shut. It stores energy in a spring as the door opens, then lets that energy out through a hydraulic fluid chamber so the door closes at a steady speed instead of swinging shut.

A working closer does four jobs:

Closes the door every time, so heat, cold, dust and pests stay outside
Latches the door, so the lock actually holds
Protects people, so a heavy door doesn't slam on a hand, a stroller or a customer with a cane
Protects the door, so the frame, hinges and glass don't take a beating on every close

On fire-rated doors, the closer is also part of the fire protection. Those doors have to close and latch on their own, which we cover further down.

Types of commercial door closers

Surface-mounted closers

This is the closer most people picture: a metal body on the door or frame with an arm that connects the two. It can be mounted on the push side or the pull side, with a regular arm that sticks out from the door or a parallel arm that sits flatter against it. Surface closers are common on steel back doors, offices, restrooms and many storefronts.

Concealed overhead closers

Many aluminum storefront doors hide the closer inside the header above the door, with only a short arm and track showing. These keep a clean look but take more work to reach, since the closer sits inside the frame.

Floor closers

Some glass doors and center-hung doors use a closer set into the floor under the door. The door pivots on a spindle that comes up out of the closer. Floor closers are durable, but replacing one is a bigger job because it sits in a box cut into the slab.

Closer size and spring power

Closers come in different strengths, often listed as sizes. A wider, heavier or windier door needs more spring power to close and latch. Many closers can be adjusted across a range of sizes. A closer that is too weak for the door won't latch it, and one that is too strong makes the door hard to open.

Signs your closer needs attention

The door slams shut or closes much faster than it used to.
The door won't latch, or stops an inch short and needs a push.
The door closes so slowly that it stays open long after people pass through.
Oil is on the door, the frame or the floor under the closer.
The door is hard to open, especially for older customers or anyone pushing a cart.
The door blows open or slams in the wind with no resistance at the end of its swing.
The arm is loose, bent or rattling, or a screw has pulled out of the door or frame.
The closer knocks, squeals or thumps as the door moves.
A hold-open feature no longer holds, or holds when it shouldn't.

If you notice any of these, it's worth a look before the door gets worse or damages the frame.

What an oil leak means

Closers rely on hydraulic fluid sealed inside the body. The fluid moves through small valves that set the closing speed. When the seals inside wear out, oil leaks past them.

Once a closer is leaking, it can't control the door the way it should, and it usually gets worse quickly. Closers are generally not refilled in the field. In almost every case, a leaking closer needs to be replaced.

Common causes of a leak include:

Age and heavy traffic on a busy entrance
Wind catching the door and forcing it past its normal stop
Propping the door open against the closer, which strains the seals
A valve screw backed out too far during an adjustment
Damage from a cart, a dolly or a vehicle

Wipe up any oil on the floor so nobody slips, and call us to swap the closer.

How a closer is adjusted

Most closers have small valve screws that control the door's speed in different parts of its swing.

Sweep speed controls how fast the door moves through most of its close.
Latch speed controls the last few inches, giving the door a final push to latch.
Backcheck slows the door if someone flings it open, so it doesn't slam into the wall or the frame.
Delayed action, on some closers, holds the door open briefly before it starts to close.
Spring power, on adjustable closers, sets how much force the closer has.

We explain these settings so you can tell us what you're seeing. Valve screws are sensitive. A small turn can make a big difference, and backing a valve screw too far out can let the oil out and ruin the closer. We recommend leaving adjustments to a technician, especially on heavy glass storefront doors, which can swing hard or drop if a pivot is disturbed.

Why seasons matter in North Texas

Closer fluid thickens in cold weather and thins in heat. A door that closes nicely in April may slam in August and crawl on a January morning after a cold front. Many closers are built to handle a range of temperatures, but a door that faces west or south and takes direct sun can see big swings.

If your door changes with the seasons, a seasonal adjustment may be all it needs. If it can't be adjusted to work year round, the closer may be too worn or the wrong type for the opening.

Closing speed and opening force rules

Accessibility rules affect how closers are set. Under the 2010 ADA Standards for Accessible Design, a door closer has to be adjusted so that a door moving from a 90-degree open position takes at least 5 seconds to reach a point 12 degrees from closed. That gives people who move slowly time to get through.

The 2010 ADA Standards also limit the force needed to push or pull open an interior hinged door to 5 pounds. That limit doesn't apply to exterior doors under the ADA, and fire doors are allowed the minimum force the local authority permits. Texas follows similar rules through the Texas Accessibility Standards, which the Texas Department of Licensing and Regulation oversees.

What applies to your building depends on its age, its use and the codes your city has adopted. Your local building official is the final word. If a door can't meet the force or speed needed without struggling to latch, adding a push-button opener may help. Our guide to ADA push-button door openers explains how those work.

Fire-rated doors need extra care

Many doors in commercial buildings are fire rated. You'll usually find a label on the hinge edge of the door or on the frame. These doors are built to slow the spread of fire and smoke, and they only work if they close and latch.

Don't prop a fire door open with a wedge, a rug or a chair.
Don't remove the closer or disconnect it to make the door easier to use.
Use only hold-open devices made for fire doors that release when the fire alarm goes off, and only where your fire code allows them.
Don't drill extra holes or add hardware to a fire-rated door without checking that it's allowed.

Many fire door assemblies need regular inspection under the fire code your city has adopted. Your fire marshal can tell you what's required for your building.

Why closers fail

Closers are built for years of service, but a few things wear them out early.

Wind. North Texas wind can catch an open door and throw it against the closer. Doors on open parking lots and corners take the worst of it.
Propping doors. Holding a door open against a closer that isn't designed to hold it open strains the arm and seals.
Wrong size. A light-duty closer on a heavy, busy door won't last.
Wrong mount. A closer mounted for one swing direction or arm type doesn't perform well if it was installed another way.
Heavy traffic. A busy restaurant, store or clinic entrance can cycle hundreds of times a day.
Abuse. Carts, dollies and people kicking doors open all take a toll.

Problems that look like a closer problem

Not every door that won't latch has a bad closer. Before we replace one, we check the rest of the door.

Worn hinges or pivots let a door sag so it rubs the frame or misses the strike.
A misaligned strike keeps the latch from catching even when the closer works fine.
A sticky latch or exit device can hold the door back at the last inch.
New weatherstripping can add enough resistance to stop a door short.
A frame out of square can bind the door. Shifting clay soil under DFW slabs can move frames over time.
Pressure differences from air conditioning or exhaust fans can push a door open or hold it shut.

Fixing the real cause keeps you from paying for a closer you didn't need.

Repair, adjust or replace?

Here's how we usually decide.

Adjust when the closer isn't leaking, the arm is solid, and the door just closes too fast, too slow or short of latching.
Repair the mounting when screws have pulled out, the arm is loose or the bracket is bent. We'll reinforce or remount it so it holds.
Replace the arm when the arm is bent or worn and the closer body is still sound.
Replace the closer when it leaks, can't hold an adjustment, is the wrong size, or is too worn to control the door.

We try to match the existing mounting holes and finish so the replacement looks right on your storefront. Concealed overhead closers and floor closers take more planning, and we'll explain what's involved before we start.

Keeping a door secure while you wait

If a door won't latch, it may not lock either. Until we can get there:

Check the door by hand at closing time and push it fully shut until you hear the latch.
Don't block or tape the latch to keep it from catching.
Keep exit doors usable. Never chain or bar an exit door to make up for a bad closer or latch. Exit doors have to open freely from inside.
Let us know it's a security issue when you call, so we can plan around it.

What a service visit looks like

Watch the door. We open and close it a few times and see how it moves, latches and sounds.
Check the closer. We look for leaks, worn arms, loose screws and the right size for the door.
Check the rest of the door. We look at hinges or pivots, the strike, the latch or exit device, and the frame.
Adjust or replace. We set the closing speed, latch speed and backcheck, or install a new closer.
Test it. We run the door through its full swing and confirm it closes and latches.
Walk you through it. We'll tell you what we did and anything else we noticed.

We're glad to plan work early in the day or around your business hours so customers aren't held up.

A quick monthly check for managers

You can catch most closer trouble early with a two-minute check.

Open each entrance door all the way and let it go. It should close smoothly and latch without a push.
Look for oil on the closer, the door and the floor.
Look at the arm and screws for anything loose or bent.
Open the door quickly and make sure the backcheck slows it before it hits anything.
Notice whether the door feels harder to open than it used to.

Write down anything that changed and give us a call.

Where we work

We handle commercial storefront doors, commercial steel entry doors and automatic entry doors for businesses across DFW and North Texas, including Dallas, Frisco, Allen, McKinney, Sherman and Denison.

What to send us

A few details help us bring the right closer the first time.

Your business name and address
Which door is having trouble, and whether it's glass, aluminum or steel
What it's doing: slamming, not latching, leaking or hard to open
A photo of the closer and its arm, plus any brand name or size printed on it
A photo of the whole door, inside and out
Whether the door is fire rated, if you know

Email photos to prodoorsandgates@gmail.com.

Call us about your closer

Pro Doors and Gates is a family-owned company with our main location at 1940 Everheart Rd in Bells. We repair and install commercial doors, closers and hardware across Dallas-Fort Worth and North Texas. You can see examples of our storefront and entrance work in our project gallery.

Call (903) 294-1846, Monday through Saturday from 7 AM to 5 PM, or send a request. Emergency service is available by appointment after 5 PM Monday through Saturday and on Sundays.

Please note: This article is general information for homeowners and business owners. It is not professional, legal or building code advice. Codes, permit rules and HOA requirements vary by city and county, so check with your local building department or HOA before you start work, and have a trained technician look at your specific door or gate. Never try to adjust or replace garage door springs or cables yourself.