A well maintained and correctly installed door should not need forcing into the locked position and the key should turn easily in the lock. I have worked as a locksmith in Cannock for over five years and from experience I have found the main cause of broken upvc lock mechanisms is due to forcing of the handles when the doors have become stiff or do not lock properly. Often all that is required is to get the door adjusted by a locksmith when symptoms first occur. Its better to get it repaired before the door lock fails and leaves you locked out and in need of an expensive multipoint lock!
