Security lock types guide

Security Lock Types: A Complete Guide to Choosing the Right Lock

Mar 22, 20255 min read

Understanding the different types of security locks is essential for making informed decisions about your home or business security. This comprehensive guide covers every major lock type available in the UK.

Mortice Locks

Mortice locks are fitted into a recess cut into the door edge. They are the most common type of lock for external timber doors in the UK. Available in 2, 3, 5, and 7-lever configurations, with 5-lever BS3621 being the minimum recommended for external doors.

Learn more about mortice deadlocks

Cylinder Locks (Euro Cylinders)

Euro cylinder locks are used in UPVC doors, composite doors, and some timber doors. They are operated by a key on the outside and a thumb turn on the inside. Look for anti-snap, anti-pick, and anti-drill cylinders for maximum security.

Night Latches

Night latches (also called rim locks or Yale locks) are spring-loaded latches that lock automatically when the door closes. They are convenient for everyday use but should always be combined with a deadlock for external doors.

Multipoint Locks

Multipoint locks engage at multiple points along the door frame simultaneously, providing excellent security. They are standard on UPVC and composite doors.

Deadbolts

Deadbolts can only be operated by a key or thumb turn — they cannot be pushed back by pressure. They are highly resistant to shimming and credit card attacks.

Padlocks

Padlocks are portable locks used for gates, sheds, and outbuildings. For security, choose a closed-shackle padlock with a hardened steel body and shackle.

Smart Locks

Smart locks combine traditional security with digital convenience. They can be operated via smartphone, keypad, key card, or traditional key.

Code Locks

Code locks (also called combination locks) use a numeric code instead of a key. They are popular for offices, communal entrances, and properties where multiple people need access.

Not sure which lock is right for your door? Call Keys4U on 033 3305 2993 for expert advice.

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