If your front door relies only on the lock in the handle, a deadbolt is one of the most worthwhile upgrades you can make. Here's what deadbolts are, the main types and how to make sure yours is doing its job.
What is a deadbolt?
A deadbolt is a lock with a solid bolt that slides into the door frame and can only be moved by turning a key or thumb-turn. Unlike the spring latch in a door handle, it can't be pushed back with a card or a shove, which makes the door much harder to force.
Types of deadbolt
Single-cylinder
A key outside and a thumb-turn inside. The most common choice for homes, and easy to open quickly from inside in an emergency.
Double-cylinder
A key on both sides. Sometimes used beside glass panels, but it can slow an escape in a fire. Check local fire and building rules before fitting one.
Keypad and smart
Opened with a code or phone, often with a key backup. Handy for households where keys get lost or for letting in visitors remotely.
Making a deadbolt secure
- Bolt length: a bolt that extends about an inch into the frame is harder to force.
- Strike plate: use a reinforced strike fixed with long screws that reach the wall framing, not just the door jamb.
- Cylinder quality: higher-grade cylinders resist picking, bumping and drilling better.
- Fit: the bolt should slide in fully without lifting or pushing the door.
- Door and frame: a strong lock on a weak frame is still weak. See entry door repair.
Which brand?
We install deadbolts from brands including Yale, Mul-T-Lock, Falcon, ASSA and Schlage. The right one depends on your door, how much security you want and your budget. A technician will explain the options and quote before installing.
Get a deadbolt fitted
Call 818-942-3093 or see residential locksmith services. If you've just moved, read why to rekey first.
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