How to Dog a Panic Bar: A Complete Guide to Securing Your Exit Device

Published: Mar 26, 2026

If you’ve ever managed a commercial building, you know the daily dance of the main entrance. During business hours, you want people to flow in and out freely. But propping the door open with a clunky doorstop is unprofessional and a potential tripping hazard. There has to be a better way, right?

There is. It’s a built-in feature on many commercial doors that you might not even know exists, and it's called "dogging."

In one simple sentence, dogging a panic bar means temporarily retracting the latch, allowing the door to function as a simple push/pull door. It’s the secret to keeping your doors unlocked and unlatched for high-traffic periods without compromising the hardware. This guide will walk you through exactly what it is, how to do it, and what to do when it doesn’t work.

The 30-Second Explanation: What is Dogging?

At its core, a panic bar—also known as a crash bar—is a type of exit device designed for fast, uninhibited egress in an emergency. You push the bar, and the latch releases. Simple.

However, having that latch constantly click open and shut all day causes unnecessary wear and tear. Dogging solves this. By using a special key or tool, you can hold the latch inside the door, effectively turning your exit device "off" until you're ready to secure the building for the night. This allows for quiet, seamless passage during business hours.

A Step-by-Step Guide to Dogging Your Panic Bar

Ready to master this simple but essential facility management skill? Follow these four steps.

Step 1: First, A Critical Safety Check: Is Your Door Fire-Rated?

Before you do anything else, you must determine if your door is fire-rated. This is the single most important safety rule. Fire-rated doors can NOT have a mechanical dogging feature. In a fire, the door must be able to positively latch to prevent the spread of smoke and flames. A dogged, unlatched door would be a catastrophic failure.

How to Check:

Look for a Label: Check the edge of the door (between the hinges) and the door frame for a metal tag or sticker. This label will explicitly state that the door assembly is fire-rated and for how long (e.g., 90 minutes, 3 hours).
Check the Panic Bar: Fire-rated exit hardware will also have a label indicating it's approved for use on a fire door assembly. Non-rated bars often have a dogging mechanism; fire-rated bars do not. If you're unsure, it's crucial to consult the fire rated door meaning and its requirements.

Visual comparison of fire-rated vs non-fire-rated panic bars, highlighting key features and certification labels.

If you see a fire-rated label, stop here. Your door cannot and should not be dogged.

Step 2: Find Your Tool: The Dogging Key

Assuming your door is not fire-rated, you’ll need the right tool. In most cases, this isn't a traditional key. It's a "dogging key," which is typically a hex key (also known as an Allen wrench). The most common sizes are 5/32" or 1/8", but this can vary by manufacturer. You may also encounter cylinder dogging (which uses a standard key) or a thumbturn, but hex key dogging is the most prevalent.

Step 3: The Main Event: Engaging the Dogging Mechanism

This is the "aha" moment. The process is simple and should feel smooth and solid.

Push the Bar: Press the panic bar in all the way, as if you were opening the door. Hold it there.
Insert the Key: While holding the bar in, insert the hex key into the dogging hole. This is usually on the head of the panic bar or on the end cap.
Turn the Key: Turn the key—typically a quarter or half turn clockwise—until you feel it "seat" into place. You’ll often feel a distinct click as it locks.
Release the Bar: Slowly release your pressure on the panic bar. If you’ve dogged it correctly, the bar will stay depressed, and the latch will remain retracted inside the door.

Your door is now in "passage mode."

Step 4: Releasing the Latch: How to "Undog" the Bar

At the end of the day, you need to re-engage the latch to secure the building. The process is just as simple:

Push the panic bar in slightly to relieve pressure on the dogging mechanism.
Insert the key and turn it back to its original position (counter-clockwise).
Slowly release the bar. You should hear a solid "clunk" as the bar extends and the latch bolt pops out, ready to secure the door. Now, your door is ready to be locked.

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Why Won't It Work? A Troubleshooting Checklist

What happens when you follow the steps, but the bar just won't stay dogged? It's a common issue, often stemming from a worn-out push bar door lock mechanism. Here are a few things to check.

Visual guide to common panic bar dogging failures, their signs, and possible fixes before replacement decisions.

Problem: The Hex Key Just Spins. This is a classic sign of a stripped dogging screw or a stripped key. The hexagonal hole has rounded out, so the key can no longer get a grip.
Problem: The Bar Won't Stay Pushed In. You turn the key, but as soon as you let go of the bar, it pops back out. This usually indicates a broken internal dogging component. A small metal piece inside has likely sheared off.
Problem: It Makes a Grinding Noise. This suggests that the internal parts are misaligned or broken, grinding against each other instead of locking smoothly into place.

If you encounter any of these issues, it’s a clear sign that the internal mechanism is failing and likely needs professional repair or replacement.

Key Takeaways and Frequently Asked Questions

Understanding how to properly use your exit hardware is key to maintaining a safe, efficient, and secure facility. Here’s a quick summary and answers to common questions.

Dogging types comparison with key fire door compliance notes to support confident hardware decisions.

What does 'dogging a door' actually mean?

It simply means to temporarily disable the latching function of a panic bar, allowing the door to be used as a push/pull door.

Can I leave my door dogged overnight for security?

Absolutely not. This is a critical misunderstanding. Dogging a door leaves it unlatched. It is not a method for locking it. It’s purely for convenience during open hours. You must always "undog" the bar and use the door’s keyed lock to secure the building overnight.

Why is it called 'dogging'?

The term comes from a mechanical "dog," which is a simple device used to hold or block another part from moving. In this case, it’s a small component that holds the latching mechanism in a retracted position.

What if I lose my dogging key?

Since it's often a standard hex key, you can typically find a replacement at any hardware store. The trick is knowing the right size. If you're struggling, a professional locksmith can identify the correct size and provide you with a new one.

Dogging your panic bar is a simple skill that can make a big difference in the daily operation of your building. But when the mechanism fails, it can be a source of major frustration. If you've run through the troubleshooting checklist and are still having issues, it may be time to call in the experts. A professional locksmith can diagnose the problem quickly, repair or replace the necessary components, and ensure your doors are both convenient and secure.

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