Common Types Of Exterior Locks - San Francisco Door & Lock

When it comes to securing your property locks are highly important. Exterior locks come in several different types and each one offers a different level of security and convenience.

Here are the common types of exterior locks:

Deadbolts

These are the most common and secure types of residential locks and they come in 2 forms single cylinder double cylinder and they both provide strong protection against forced entry.

Single cylinder deadbolt

This type is operated with a key from outside and a thumb turn from inside.

Double cylinder deadbolt

This type requires a key for both sides.

Doorknob Locks

Doorknob locks have the lock mechanism within the knob itself and often found on exterior doors in combination with deadbolts.

Doorknobs are more vulnerable to break ins if used alone as the knob can easily be broken off.

Mortise Locks

Less common in standard residential applications, mortise locks are found in older home and involve a pocket cut into the door where the lock is fitted and they are well known for their high durability.

Lever Handle Locks

These are more common in commercial settings but are also used in residential properties especially for interior doors as they are easier to operate than regular doorknobs which making them suitable for people with disabilities.

Keyless Entry Systems

These systems use a keypad, fob key or a biometric entry system like fingerprint scanners and offer great convenience by eliminating the need for physical keys.