Your home’s security begins with the locks on your doors. With so many options available, many homeowners are unsure which type of lock offers the best balance between safety, convenience, and insurance compliance.
KBO Lock & Safe can help homeowners choose, install, and upgrade locks every day. This guide explores the most common types of door locks, their advantages, and the situations where they are most effective.
Why the Right Lock Matters
Locks are your first line of defence against burglary. Criminals often exploit weaknesses in older or poorly chosen locks, using techniques such as lock snapping, drilling, or slipping. A good quality, British Standard-approved lock can make these methods far more difficult.
There is also an insurance factor to consider. Many UK insurers require external doors to be fitted with BS3621-approved mortice locks or British Standard night latches. Without these, you may find it harder to make a successful claim if a break-in occurs.
Mortice Locks
A mortice lock is set into the body of the door rather than being surface-mounted, which makes it robust and resistant to force. They are usually operated with a key and are a common feature on wooden doors.
There are two main types:
- 3-lever mortice locks: provide a basic level of security and are most often used for internal doors.
- 5-lever mortice locks: designed for external doors, offering greater protection. Versions stamped with BS3621 meet insurance standards.
Mortice locks are strong, reliable, and a long-standing choice for front and back doors made of wood.
Cylinder Locks
Cylinder locks, often called Euro cylinders, are one of the most widely used lock types in the UK, especially on uPVC, composite, and aluminium doors. They are popular because the cylinder itself can be replaced without changing the entire locking system.
Options include:
- Single cylinder: key operated on one side only.
- Double cylinder: key operated on both sides, increasing security.
- Thumb turn cylinder: key on the outside and a simple turn knob on the inside, often chosen for ease of exit in case of fire.
It is important to note that standard cylinders can be vulnerable to a burglary method known as lock snapping. To prevent this, choose an anti-snap Euro cylinder that meets the TS 007 three-star rating or the SS312 Diamond Standard.
Night Latches
Night latches, sometimes referred to as “Yale locks”, are mounted on the inside surface of the door. The door locks automatically when it closes, which many people find convenient.
There are different versions available:
- Standard night latch: provides a basic level of protection and is best used with another lock.
- Deadlocking night latch: prevents the lock from being opened with a card or other tool.
- BS3621 night latch: stronger, insurance-approved, and resistant to forced entry.
Night latches are most effective when used in combination with a mortice lock, particularly on front doors.
Multi-point Locking Systems
These are most common on modern uPVC, composite, and patio doors. With a single turn of the key or handle, multiple points along the frame are secured with bolts or hooks.
They provide excellent protection against forced entry and also help the door stay firmly in place, reducing draughts and warping. As with cylinder locks, the level of protection depends heavily on the quality of the cylinder used, so anti-snap models are strongly recommended.
Rim Locks and Deadbolts
Rim locks are mounted on the surface of the door and use a bolt mechanism. They are less secure than mortice or cylinder locks, but can be useful as an additional measure. Deadbolts, in particular, provide extra reinforcement when paired with another lock.
Digital and Smart Locks
The rise of smart technology has brought new options to home security. Digital and smart locks allow you to unlock your door using a code, a fingerprint, or a smartphone. Some even integrate with wider home security systems.
These locks can be very convenient, particularly for busy households or rental properties where access codes can be shared instead of physical keys. However, it is important to choose a reputable brand with strong security standards, as not all smart locks provide the same level of physical protection as traditional systems.
Patio and Sliding Door Locks
Patio doors, French doors, and sliding doors require specific solutions, as they are often targeted by burglars. Options include additional bolts, sliding door locks, or multi-point systems. Reinforcing these doors is important, as they are generally considered weaker points of entry compared to solid front doors.
How to Choose the Right Lock
When deciding on the best lock for your home, consider:
- The type of door: wooden, uPVC, composite, or aluminium.
- Security requirements: front doors usually demand the highest level of protection.
- Insurance standards: external doors often need BS3621-approved locks.
- Practicality: families may prefer thumb turn cylinders for quick exits, while smart locks may suit those seeking convenience.
A lock should always balance convenience with security. Spending a little more on a high-quality, approved lock can make your home significantly safer and help meet insurance requirements.
KBO Lock & Safe: Locksmiths in Aldershot
With over twenty years of experience as a locksmiths in Aldershot, KBO Lock & Safe offers fast, reliable, and professional services.
Whether you need a uPVC door locksmith to upgrade your cylinders or want to explore the latest smart door locks for modern convenience, our team is here to help.
Contact us today to secure your home with the right lock, fitted by trusted professionals.
