COMMON UK DOOR LOCK TYPES
Lock terminology can be confusing because a cylinder, latch, deadlock and multipoint mechanism may be separate parts of the same door system.
Euro-profile cylinders
Common on uPVC, composite and some other doors. The cylinder accepts the key but may operate a larger multipoint mechanism, so a cylinder fault and mechanism fault are not identical.
Mortice locks
Mortice locks fit into a pocket in the door edge. Designs include deadlocks and sashlocks. Suitability depends on the door, installation and security requirement.
Night latches
A night latch is usually surface-mounted internally and may latch automatically when the door closes. Some doors combine one with another lock.
Multipoint systems
These can engage several points along a door edge. Handles, cylinders, gearboxes and locking strips may all form part of the system.
Need locksmith assistance?
Explain the problem, door type if known and your postcode so the enquiry can be assessed before work is arranged.
Call 07441 928325What to know about door lock selection
This page is designed to help customers understand door lock selection before arranging work. Locksmith problems can look similar from the outside but have different causes, so accurate diagnosis matters. The door material, lock type, symptoms and circumstances all affect the appropriate repair.
Start with the symptoms
For door lock selection, useful details include whether the key enters and turns, whether the handle lifts or drops normally, whether the door is open or closed, and whether the problem developed gradually or happened suddenly. With lock types, standards, door compatibility and security requirements, photographs or a clear description can help identify likely parts, although a final diagnosis may require inspection.
Repair or replace?
Replacement is not automatically necessary. A locksmith may be able to adjust, repair or replace an individual component where that provides a safe and durable result. Replacement can make more sense when hardware is badly worn, damaged, obsolete, insecure or when key control needs to change. The aim should be to solve the fault without unnecessary work.
Security and lock standards
Where a lock is being replaced, ask what specification is appropriate for the door and property. British Standards, door construction, insurance requirements and the surrounding hardware can all be relevant. A high-specification cylinder alone does not correct a weak door, poor alignment or damaged frame, so the complete entry point should be considered.
Information to provide when calling
Give the property location, door type, lock type if known and a concise explanation of the problem. For an urgent lockout, say whether there is another safe point of entry and whether a key is lost, broken, locked inside or simply not operating the lock. For planned work, explain what outcome you want, such as new keys, improved security or a repair to an unreliable mechanism.
Avoiding unnecessary damage
Methods vary by lock and situation. Where appropriate, a locksmith will normally assess less destructive options before drilling or replacing hardware. No technique is suitable for every lock, and security work should only be carried out where the customer is authorised to access or alter the property.
Related RED LOCKSMITHS services
Use the service and location directories to move from this guide to emergency locksmith, lock-change, uPVC door-lock, burglary-repair, residential or commercial information. The dedicated location pages can also help you find coverage information for your area.