A window locking mechanism also known as an espag is located inside a UPVC window sash and can only be seen when the Window sash is opened. The mechanism is operated via a window handle which causes small locking points called mushrooms or shoot-bolts to engage into keeps fixed to the frame which in turn secures your window closed.
Looking for a Window lock repair service in Essex?
When an window mechanism / espag fails, the espag will usually completely seize up causing the window to stay locked even once the handle has been turned. Although it may seem like an impossible task to open the window, rest assured this a problem that we deal with day-to-day and can usually repair on the same visit.