uPVC door is difficult to lock or unlock

Cause

The lock requires lubrication

Repair

  • lubricate with graphite (fine oil lubricant will attract dust and become sticky, making the lock more difficult to use in the future)

Cause

Dirt in the keyhole is obstructing the locking mechanism

Repair

  • clean out with fine wire or a pipe cleaner and lubricate with graphite

Cause

The key is bent or worn

Repair

  • replace the key and/or lock

Cause

The lock is not aligned to the striker plate, causing the door to jam

Repair

  • adjust door closing/alignment