Single vs. Double Cylinder Deadbolts

When it comes to home or business security, one of the most important features is a deadbolt lock. A deadbolt is a locking mechanism that cannot be opened from the outside without a key. This makes them much more secure than a standard doorknob, which can be easily forced open. Deadbolts are available in two different designs: single vs. double-cylinder deadbolts.

Understanding the differences between single-cylinder vs. double-cylinder deadbolts can help you choose the best option for your needs.

Single Cylinder Deadbolts

Single-cylinder deadbolts are widely used in homes and the most common entry lock. They have a keyhole on the outside, and a thumbturn lock on the inside. This design is convenient because it allows you to open the door without a key from the inside. They are easier to use in case of an emergency since you don't have to fumble for keys to get out. Single-cylinder deadbolts are ideal for entry doors that don't have a lot of foot traffic. 

However, it also means that if someone were to break a window and reach in, they could easily turn the thumbturn and unlock the door. When comparing single vs. double-cylinder deadbolts, it's easy to see that the single-cylinder is less secure. However, they are still a fine option for security, especially when used in conjunction with other security measures like an alarm system. 

What are the benefits of a single-cylinder deadbolt?

• Cost-effectiveness — Price is a factor when comparing single-cylinder vs. double-cylinder deadbolts, as single-cylinder tends to be less expensive.
• Simplicity — Single-cylinder deadbolts are easier to use since you don't need a key to unlock them from the inside.
• Emergency exit — In case of an emergency, you can easily get out without having to fumble for keys.
• Saves time locking and unlocking — Since you don't need a key to unlock them from the inside, single-cylinder deadbolts can save you time when coming in and out of your home.
• Easy to use for everyone — Single-cylinder deadbolts are easy for both young and old to use.

What are the drawbacks of a single-cylinder deadbolt?

• Less secure — Since they can be unlocked from the inside without a key, they are less secure than double-cylinder deadbolts, so read on to learn more about your options when comparing single vs. double-cylinder deadbolts.
• May not work with some door hardware — Some door hardware (like lever handles) can interfere with the operation of a single-cylinder deadbolt.

Double-Cylinder Deadbolts

The double-cylinder deadbolt is the type most often used in rental property and commercial applications where enhanced security is needed. It requires a key to operate from both the inside and outside of the door. This provides maximum security but can be problematic if there is a fire or other emergency and you need to exit your home or the building quickly. 

When looking at single vs. double-cylinder deadbolts, it's clear that the double-cylinder deadbolt provides additional security against someone breaking a window to reach in and try to turn the knob from the inside. It's also more difficult for a burglar to pick a double-cylinder lock since it has two tumblers. These deadbolts typically have higher security ratings.

What are the benefits of a double-cylnder deadbolt?

• Security — Since a key is required to unlock them from both the inside and outside, double-cylinder deadbolts offer an extra layer of security.
• Deters burglars — Since they are more difficult to pick, most burglars will move on to an easier target.
• Added protection against break-ins — When comparing single vs. double-cylinder deadbolts, there's no doubt that if a burglar does manage to break a window, they still won't be able to turn the knob and open the door from the inside, unlike single-cylinder deadbolts.

What are the drawbacks of a double-cylinder deadbolt?

• They can be difficult to use in an emergency — If there is a fire or another emergency, you may not be able to quickly exit the building since a key is required to unlock the deadbolt from the inside. 
• You may forget your key — If you lock yourself inside your own home or business, you will need a key to get back in.

Whether you want to upgrade your keyed entry locks or are looking for a new deadbolt, it's important to understand the difference between single vs. double-cylinder deadbolts. Opt for a double-cylinder deadbolt if enhanced security is a priority and a single-cylinder if you're concerned about the possibility of getting locked out but with fewer security concerns. 

Shop Deadbolts at Door Locks Direct

Door Locks Direct offers a wide variety of deadbolts for your home and business security needs. We carry single and double-cylinder deadbolts in various finishes to match your décor. Not sure which type of deadbolt is right for you when comparing single-cylinder vs. double-cylinder deadbolts? 

Get in touch with our passionate experts to help you compare single vs. double-cylinder deadbolts, pick the best one for your needs, and get it installed quickly and easily.