Notice what has changed
When a UPVC handle becomes stiff or the door needs extra force to lock, the cause may be in the multipoint mechanism, cylinder or door alignment. Describe the symptoms before continuing to force the handle.
Multipoint mechanisms run along the edge of a door and engage at more than one point. A change in how the handle or key feels can help narrow down what needs checking.
Photos of the handle, door edge and locking strip can make it easier to understand the hardware. The supplied work photos show different parts of this mechanism, including a removed lock case and a multipoint strip.
What to mention when you call
Explain the door or lock type if you know it, what has changed and whether the door still locks. For non-urgent enquiries, a photo can help show the hardware.

