Do UL Fire-Rated Locks Also Provide High Security?

When you think about locks, your first thought might be security—but what about fire safety? UL fire-rated locks play a dual role in helping to protect lives and property by withstanding extreme heat during a fire. But are they as reliable for security as they are for fire safety?

This blog unpacks what UL fire-rated locks are, how they work, and whether they also deliver high-quality security for your commercial or residential spaces. By the end, you'll know whether they're the right choice for your property.

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What Are UL Fire-Rated Locks?

UL fire-rated locks are locking mechanisms tested by Underwriters Laboratories (UL), a trusted third-party organization for safety standards. A UL fire-rating means the lock has been rigorously tested to withstand a certain temperature and time in a fire without failing. This ensures that the lock will maintain its structural integrity and functionality for the duration of its rated time (commonly 20 minutes to 3 hours).  

Why Are UL Fire-Rated Locks Important?

● Protect Lives: They can help delay the spread of fire, allowing occupants to vacate a building safely.

● Preserve Property: By maintaining the structural integrity of doors during a fire, they reduce fire damage to adjoining rooms.

● Code Compliance: Buildings like offices, schools, and hospitals often require UL fire-rated locks to comply with fire safety regulations.

It’s clear that these locks are crucial for fire safety, but does high performance in fire resistance translate to high security? Let's take a closer look.

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Are UL Fire-Rated Locks Designed For Security?

The short answer is not necessarily. While UL fire-rated locks are built to handle fire-related situations, their primary purpose is to maintain door integrity during fires—not necessarily to provide maximum resistance to tampering, picking, or forced entry.

That being said, many UL fire-rated commercial locks do integrate high-security features, but it’s essential to confirm these capabilities before making a purchase.

Fire Rating vs. Security Rating

Here’s what differentiates fire ratings from security ratings when it comes to locks:

● Fire Rating focuses on the lock’s ability to withstand high temperatures and prevent the spread of fire.

● Security Rating (such as ANSI grades or burglary resistance certifications) evaluates the lock’s ability to resist unauthorized access through physical attacks like picking, drilling, or bumping.

A lock can have one, both, or neither of these ratings.

For example, a UL fire-rated lock might not necessarily have an ANSI Grade 1 (highest security) rating, but some manufacturers combine both features for maximum versatility. This means you’ll need to carefully check lock specifications based on your needs.

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High-Security Features To Look For in UL Fire-Rated Commercial Locks

If you’re searching for a lock that performs well against fires and intruders alike, look for models that combine the fire-resistance of a UL fire-rated lock with high-security capabilities. Here are some features to prioritize:

1. ANSI/BHMA Security Grade Certification

The American National Standards Institute (ANSI) assigns locks three grades:

● Grade 1 (Best) for heavy-duty, high-security requirements like commercial or industrial spaces.

● Grade 2 for light commercial or heavy residential use.

● Grade 3 (Standard) for typical residential settings.

Ideally, opt for a UL fire-rated lock with Grade 1 certification to ensure both fire and intrusion resistance.

2. Drill and Pick Resistance

High-security locks come with mechanisms to resist picking or drilling. UL fire-rated locks with hardened steel inserts or complex pin systems, for example, are better at stopping physical attacks.

3. Key Control

Locks integrated with patented key systems limit unauthorized duplication of keys, adding an additional layer of security.

4. Durable Construction

Look for materials like solid stainless steel or brass, which not only resist high temperatures but also withstand brute force attempts.

5. Smart Lock Capabilities

Some UL fire-rated commercial locks offer smart lock features like keypads, biometric access, and mobile app integrations. These features often enhance physical security without compromising fire safety.

By combining these features, you’ll have a lock that offers both superior fire resistance and strong protection against intruders.

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Advancements in Dual-Purpose Locks

Lock manufacturers are increasingly producing models specifically designed to address both fire safety and security concerns. For instance:

● Mortise Locks are popular choices for commercial applications. Many of these locks come with UL fire ratings as well as superior strength against break-ins due to their robust design.

● Deadbolts with Fire Ratings are increasingly available. They combine premium fire-resistance and the ability to withstand forced entry tactics.

Brands like Schlage, ASSA ABLOY, and Yale offer products designed to meet stringent fire and security standards, making them ideal for businesses or locations where safety and security are equally important.

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Applications of UL Fire-Rated Locks in High-Security Scenarios

Here are some common scenarios where you might need a lock that excels at both fire safety and security:

1. Commercial Spaces

Office buildings and factories often require UL fire-rated commercial locks for employee safety and regulatory compliance. Using high-security variants ensures both fire safety and protection against burglary or unauthorized access.

2. Educational Institutions

Schools and universities require locks that protect students, teachers, and staff from fire as well as unwanted intrusion. Dual-rated locks help enhance overall campus security.

3. Healthcare Facilities

Hospitals and clinics must comply with strict fire regulations. UL fire-rated commercial locks with high-security features prevent unauthorized access to sensitive areas like storage rooms with pharmaceuticals.

4. Residential Complexes

Premium residential spaces often integrate UL fire-rated locks on key entry points. Choosing versions with added security ensures residents are safe from both environmental (fire) and crime-related risks.

By choosing the right locks for your specific context, you can rest assured that your property remains safe from multiple threats.

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Making the Right Decision for Your Security and Safety Needs

While not all UL fire-rated locks are designed with a focus on high security, many products do combine the benefits of fire resistance with advanced security features. Understanding the differences between fire ratings and security ratings, and knowing what features to look for, can help you make the right choice.

If you need a combination of commercial-grade fire protection and high-security resistance, always:

● Verify ANSI grade certifications.

● Consider value-added features like smart lock capabilities or patented key systems.

● Identify locks suitable for your specific environment, whether residential or commercial.

When it comes to protecting your property, UL fire-rated locks are an excellent investment—but don’t forget to ensure they meet your security expectations too.

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