My insurance asks for a five-lever mortice deadlock; what is that?

“Mortice” means that the lock is fitted within the fabric of the door — a mortice is a rectangular hole in a piece of wood — rather than screwed to the face or “rim” of the door. Deadlock means that the lock-bolt is not held in the keep by a spring; in other words it’s not “live”. A deadbolt is extended manually, usually by a key, and can only be retracted in the same way. Five lever refers to the tumblers that prevent the lock opening in the absence of the true key. A typical “Yale” rim latch lock has pin tumblers, which are not particularly secure, whereas a five lever lock has, well, five levers — a much more secure arrangements.

Please contact Unique Locksmiths on 0208 524 5566 and we will come to the property free of charge and give a quote before carrying any works out.