Why a uPVC door will not lock: a safe diagnosis guide
A practical way to describe a uPVC door fault, separate likely symptoms and know when to stop trying the handle.
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UPVC doors
Practical explanations and guides. Each article links to its source material and keeps general advice separate from RapidLock service information.
Understanding uPVC multipoint locking systems
What the cylinder, gearbox, strip, hooks and keeps do, and why one symptom can have several causes.
Read articleThe uPVC handle lifts but the key will not turn
What this combination of symptoms can indicate and what to record before seeking help.
Read articleWhy door alignment matters to a lock
How a change in door position can affect latches, locking points and the effort needed to secure a door.
Read articleSeasonal door problems: what to check first
Why a door’s feel can change with the weather, what to record and why the door material matters.
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