Understanding the Basics: Deadbolt vs Deadlock
When you’re deciding how best to secure your home, the choice often boils down to two major players: deadbolts and deadlocks. Both offer solid protection—but they function differently and come with their own pros and cons.
What is a Deadbolt?
A deadbolt is one of the most common types of locks found on residential doors. It’s usually installed as a secondary lock above the doorknob and is operated with a key from the outside and a thumb-turn latch from the inside.
Key features of a deadbolt:
Requires a key only on the outside
Thumb-turn lever for quick access from the inside
Typically single-cylinder, though double-cylinder versions exist
Easy to install
More affordable than deadlocks
Ideal for DIY home security upgrades
Deadbolts are a go-to choice for homeowners who want a straightforward, cost-effective layer of added security. They’re generally pick-resistant and durable—especially if you opt for a high-security model that’s been rated for resistance against forced entry.
What is a Deadlock?
A deadlock, while similar in strength and appearance, operates a bit differently. Traditional deadlocks require a key on both sides of the door. That means you need a key (or code pad) to both lock and unlock it, regardless of whether you’re inside or outside.
Key features of a deadlock:
Requires a key or keypad to operate on both sides
No internal latch or thumb-turn
Adds an extra layer of security and privacy
Can reduce unauthorized exit from the inside (e.g., by children)
Typically more expensive than deadbolts
More complex to install
Deadlocks are often used in situations where complete control over who enters and exits is needed. However, they can also increase the chances of accidental lockouts, especially in busy households.
Which is More Secure?
That’s the million-dollar question, right?
Security-wise, both are strong contenders. Each lock type extends deep into the door frame, making it tough for intruders to force the door open. They both offer excellent resistance to brute-force attacks and provide peace of mind when installed correctly.
However, deadlocks can edge out deadbolts when it comes to controlled access. Because they require a key on both sides, it’s harder for someone to sneak out or in without authorization. That said, this added control comes with a trade-off—convenience.
Deadbolts are easier to manage for families or shared households. You can exit quickly in case of an emergency without having to search for a key. For that reason, deadbolts are often seen as the more practical option for everyday use.
Pros and Cons Breakdown
Here’s a quick side-by-side comparison to help you weigh your options:
Deadbolt Pros:
Easy to install and use
Affordable
Allows fast exit during emergencies
Great for DIY projects
Compatible with smart lock upgrades
Deadbolt Cons:
Can be picked if low-quality
Slightly less control over entry/exit
Deadlock Pros:
High security with key access both ways
Better control over who can open the door
Great for added privacy
Deadlock Cons:
Risk of accidental lockouts
Slower to exit in emergencies
More expensive
Requires professional installation in some cases
Who Should Use What?
Your ideal choice depends on your lifestyle.
Deadbolts are great for:
Families with kids
People who want quick and easy access
Renters or DIY-ers looking for affordable security
Anyone concerned about emergency exits
Deadlocks are ideal for:
High-security areas
Property owners looking to restrict both entry and exit
Households where privacy is a major concern
Secondary entrances (like backdoors or storage rooms)
Safety Precautions: Don’t Just Lock It—Think Ahead
Regardless of which lock you choose, safety isn’t just about installation—it’s about preparation.
Here are some simple steps to take:
Know your lock system. Whether you just moved in or it’s been a while, understand how your current locks work.
Keep spare keys handy. Make copies and store them in safe places. Give one to a trusted neighbor or family member.
Plan for emergencies. Deadlocks can slow down exit times. Make sure everyone in the home knows where keys are kept and how to unlock the doors.
Upgrade if needed. If your current system doesn’t feel secure enough, it might be time for a change.
Your home security should never put you at risk. If your building or landlord has already installed locks, take the time to understand their function and limitations.
So, What’s the Next Step?
If you’re ready to boost your home’s security, here’s how to get started:
Take inventory. Check what lock system is currently installed on your doors.
Assess your needs. Think about who’s coming and going. Are you worried more about entry, exit, or both?
Copy your keys. It sounds simple, but it can save you a lot of stress in a crisis.
Consult a pro. Still unsure? Give us a call at Smith’s Lock and Safe. We’ll walk you through the best options for your home and budget.
Frequently Asked Questions
Can a deadbolt be used with a deadlock?
Yes, and in fact, many homes use both. A deadbolt offers quick access while a deadlock adds an extra layer of security.
Are deadlocks legal in all areas?
Some jurisdictions have fire safety codes that limit the use of key-operated deadlocks on exit doors. Always check your local building regulations.
Which lock is harder to pick?
High-security models of both deadbolts and deadlocks offer strong resistance to picking. Deadlocks may be more secure due to requiring a key on both sides.
Is it worth upgrading to a smart deadbolt?
Absolutely, if you want convenience and remote access. Many smart deadbolts allow keyless entry and remote control via mobile apps.