Five Common Lock Failures Across the Sutton Borough
For lock issues in the Sutton borough, five common failures often disrupt our daily routines. Understanding these can help us prevent unexpected hassles.
First, the UPVC or composite multipoint gearbox can seize, particularly in 1930s-semi side and back doors or Hackbridge new-builds. This happens when mechanisms like Mila or GU Ferco wear out after 8-12 years, preventing the door from locking properly.
Next, we encounter Yale night latch spring failures, especially on Wallington 1930s-semi or Carshalton period front doors. The latch mightn't return after turning the key.
Finally, let's consider the following frequent issues:
- Mortice deadlock lever wear: Often after 30-50 years on period doors, causing locking problems.
- Cylinder pin tumbler stuck: Grit ingress affects doors on busy roads.
- Multipoint handle alignment slipped: Common when door hinges drop, misaligning hooks.
Being aware of these can save us time and stress.



