Types of Door Locks: A Comprehensive Guide

A door lock is the first line of defense for your home, providing essential security. There are various types available on the market. From traditional deadbolts to modern smart locks, each lock type offers unique features, advantages, and levels of security.

In this guide, we’ll explore the different types of door locks, their pros and cons, and how to choose the right one for your specific needs. Whether you’re securing your front door, upgrading interior locks, or exploring advanced smart options, this comprehensive overview will help you make an informed decision.

Different Kinds of Door Locks

What are the different types of door locks? Here’s a detailed look at the most common door lock types, their pros and cons, and the best uses.

1. Deadbolt Locks

Deadbolts are widely considered one of the most secure front door lock types, featuring a solid steel bolt that extends deep into the door frame. You can choose a single-cylinder version for convenience or a double-cylinder if you want extra security on both sides.

Pros:

• Resistant to picking and drilling, making it ideal for exterior doors.
• Available in single-cylinder and double-cylinder options, giving flexibility based on your security needs.

Cons:

• Double-cylinder deadbolts require a key on both sides, which could be inconvenient in emergencies.

Best For: Exterior doors, especially in areas with higher security risks or for homeowners seeking robust protection.

2. Knob Locks

You’ve probably seen these locks on bedroom and bathroom doors. They’re simple, affordable, and easy to install, which is why they’re so common. But keep in mind, the actual locking mechanism is inside the knob, so if someone really wanted to break in, they could. Not the best choice for front doors!

Pros:

• Affordable and widely available, making them an accessible option.
• Easy to install, with no professional tools or expertise needed.
• Can provide adequate privacy for low-security areas like bedrooms or bathrooms.

Cons:

• Vulnerable to forced entry, as the lock mechanism is inside the knob, which can be easily broken.

Best For: Bedrooms, bathrooms, and interior doors that require privacy but not high security.

3. Lever Handle Locks

If you want something stylish and easy to use, lever handle locks are a great choice. Instead of twisting a knob, you just press the handle down, which is great for kids, seniors, or anyone who struggles with traditional locks.

Pros:

• Easy to operate with a push-down mechanism, making it ideal for children, the elderly, or individuals with disabilities.
• Durable construction often made from stainless steel or brass, ensuring longevity.
• Available in a variety of designs to complement modern interiors.

Cons:

• Less secure compared to deadbolts, as the mechanism can be bypassed with force.

Best For: Interior doors, offices, and spaces where accessibility is a priority.

4. Smart Locks

Smart locks are perfect if you love tech and convenience. Forget digging around for keys—just use a PIN code, fingerprint, or your phone to unlock your door. Some advanced models, like the eufy Smart Lock E30, even let you lock or unlock remotely, which is super handy if you have guests or deliveries while you’re away.

Pros:

• Provides keyless entry through options like PIN codes, fingerprint scanning, or smartphone control.
• Allows remote locking and unlocking, ideal for busy homeowners or frequent travelers.
• Tracks entry logs, giving you a clear picture of who accessed the door and when.
• Integrates with smart home systems for voice control and automation.

Cons:

• Higher cost compared to traditional locks.
• Requires batteries or a power source, which needs monitoring to avoid lockouts.

Best For: Exterior doors for tech-savvy homeowners or those seeking advanced security features.

5. Mortise Locks

These locks are built into the door itself, making them extra sturdy. That’s why you’ll often see them in commercial buildings or older homes with solid doors. They combine both a latch and a lock in one system, which gives you a higher level of security compared to standard locks.

Pros:

• Combines strength and functionality, as it often features both locking and latching capabilities.
• Highly resistant to tampering, including picking or drilling.
• Long-lasting due to the use of high-quality materials.

Cons:

• Requires professional installation, which may add to the overall cost.

Best For: Commercial buildings, high-security residential doors, or older homes requiring a traditional aesthetic.

6. Cam Locks

Cam locks are small but super useful. You won’t use them for doors, but they’re great for securing mailboxes, cabinets, and safes. They work with a simple turn of a key and are easy to install wherever you need a bit of extra security for personal belongings.

Pros:

• Easy to install and operate, making it suitable for various applications.
• Affordable and readily available in hardware stores.
• Compact design that fits into tight spaces like cabinets and drawers.

Cons:

• Not designed for high-security applications.

Best For: Mailboxes, cabinets, safes, and other non-door uses.

7. Rim Locks

Rim locks are an older type of lock that is mounted on the inside surface of a door, so they’re easy to install. While they’re not the strongest locks out there, they work well as a secondary lock for added security.

Pros:

• Simple installation process suitable for DIY projects.
• Aesthetically appealing for older homes or traditional interiors.

Cons:

• Limited security compared to modern locks.

Best For: Interior doors or as a secondary lock for exterior doors.

How to Choose the Right Door Lock?

Selecting the right lock for your home goes beyond understanding the door lock types. Additional factors play a role in ensuring that the lock you choose provides the security, functionality, and style you need.

Here are the key considerations to help you make the best decision:

1. Purpose and Location: Different doors require different levels of security. For exterior doors, prioritize strength and advanced features, such as those found in smart locks. For interior doors, privacy locks or lever handle locks such interior door locks types may suffice.
2. Security Level: The security level of a lock depends on its design and features. Deadbolts and mortise locks provide superior protection, while rim and knob locks are better suited for low-security needs. Look for locks with high-grade materials and certifications for added peace of mind.
3. Ease of Use: Consider who will use the lock. Lever handle locks are easier to operate for people with mobility issues, while smart locks offer keyless entry options that are user-friendly for tech-savvy households.
4. Durability and Material: For exterior doors, choose locks made from durable materials like stainless steel or brass, which can withstand weather conditions and tampering. Interior locks don’t need the same level of durability, allowing for more flexibility in material choice.
5. Aesthetic Appeal: Locks contribute to the overall look of your home. Modern smart locks and sleek mortise locks can enhance a contemporary design, while traditional knob or rim locks work well in older or rustic homes. Consider the finish and style to match your door and decor.
6. Additional Features: Advanced features can greatly enhance a lock’s functionality and convenience. Smart integration allows locks to connect with home systems, enabling remote control, real-time monitoring, and voice-activated operation. Tamper-proof designs, including anti-pick and anti-drill mechanisms, offer enhanced security against break-ins. Customizable access provides flexibility by allowing unique codes or keys for family members, guests, or service providers.

Conclusion

Choosing the right lock for your home requires understanding the types of door locks available, and their specific applications. From traditional deadbolts and mortise locks to advanced smart locks, each option offers unique benefits tailored to different security needs.

By carefully considering your purpose, location, security requirements, and aesthetic preferences, you can select a lock that enhances both the safety and style of your home. Whether it’s upgrading your front door with a high-security lock or adding privacy locks to interior spaces, the right choice will provide peace of mind and convenience.

Common FAQs about Types of Door Locks

What is the extra lock on a door called?

The extra lock on a door is often referred to as a door top lock or secondary lock. Examples include chain locks, surface bolts, or rim locks, which provide additional security by reinforcing the primary locking mechanism.

What type of lock should be used on exterior doors?

Exterior doors should use high-security options like deadbolts, mortise locks, or smart locks. These locks provide robust protection against forced entry and can include features such as anti-pick mechanisms or keyless entry for added convenience and security.

How to identify lock type?

To identify a lock type, examine its design and mechanism. Knob locks have a locking mechanism inside the knob, while lever handle locks feature a push-down handle. Deadbolts extend a steel bolt into the door frame, and mortise locks are recessed into the door. For advanced options, smart locks typically include keypads, fingerprint sensors, or app control.