Best High Security Door Locks for Homes

There are numerous types of locks available for new installations. Here we explain the most common lock types used in residential properties.

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  Euro cylinders

  A euro cylinder is a standardised, popular lock barrel, often used in uPVC, composite and wooden doors. It is known for easy replacement and operation via an internal cam, and can be upgraded to higher-security features such as anti-snap technology.

  All euro cylinders supplied and fitted by Scotia Locksmiths are anti-snap and certified to EN1303, meaning they are also drill, pick and pull resistant. They can also be supplied with a thumb turn on the inside of the door, enabling easy escape in the event of a fire or other emergency.

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  Multi-point locks

  A multi-point lock is a high-security door locking system that secures a door at three or more points (top, middle and bottom) with hooks, bolts or rollers, operated by a single handle and key turn. It provides superior security and a tighter weather seal than traditional single locks, and is commonly found on uPVC and composite doors. By distributing pressure evenly, it helps prevent warping and draughts.

  In most cases, when the central locking mechanism fails, these can be replaced without the need to buy a complete new unit.

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  Mortice locks

  A mortice lock is installed within a deep pocket cut into the edge of a door, rather than being surface-mounted, providing greater security and a sleek finish. Commonly used on wooden doors, it often features a deadbolt and/or latch operated by a key and handles, with types such as deadlocks and sashlocks available.

  The lock body is housed inside a precisely cut rectangular hole in the door edge, making it strong and hard to force open. It is considered highly secure, is often used for insurance compliance, especially on exterior doors, and can withstand heavy use. Once installed, only the forend plate and the keyhole or handle are visible, giving a clean look.

  A deadlock is key-operated only, throwing a deadbolt for strong security. A sashlock combines a key-operated deadbolt with a spring-loaded latch operated by handles.

  All Union 3-lever and 5-lever mortice locks and sash locks supplied and fitted by Scotia Locksmiths come with a 10-year guarantee. They are protected against attack with anti-pick, anti-saw and anti-drill features, and comply with BS EN 3621, BS EN 1634 and BS EN 12209. They are also fire-tested and Certifire and Secured by Design approved.

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  Night latches

  A night latch, often called a Yale lock, is a surface-mounted door lock that secures a door from the inside with a knob or lever, and from the outside with a key, latching automatically when the door closes for easy, instant security. It is ideal as a secondary lock alongside deadbolts, offers keyless emergency exit, and comes in deadlocking (more secure) or non-deadlocking types. It should always be used with another lock, such as a mortice lock, for true security, as it can be vulnerable if a glass panel breaks.

  These locks come in two sizes (40mm and 60mm), with both the lock and rim cylinder available in a variety of colours.

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  Rim locks

  A rim lock is a traditional, surface-mounted door lock that sits on the inside face of a door, rather than being recessed into it like a mortice lock. Known for its vintage look and often seen in period homes, it consists of a visible metal box housing a latch and sometimes a deadbolt, operated by door knobs and a key. These locks are valued for their decorative appeal, fitting well with traditional, Victorian or period styles.