A deadbolt is a door lock that is typically operated with a key. Deadbolts are not spring loaded and can only be opened by rotating the interior cylinder with a key or the attached thumb knob. Deadbolts can have two cylinders (AKA Double Deadbolt) which require keys from both sides of the lock. Check with your county’s fire code to see if you can install this on your property. Other types of deadbolts include keyless entry deadbolts like keypads, fingerprint scanners, and mobile access locks. The picture provided shows an example of a double deadbolt (left) and a regular deadbolt (right). 

Typically, double deadbolts are installed on doors with windows to prevent people from smashing the glass and unlocking the door from the inside. Double deadbolts are also seen on some basement windows or metal storm doors.

If you have any questions about a specific deadbolt, please text us your questions and a picture to (703) 239-3038 or fill out a contact form on our contact page, and we’ll reach out to you!