Why Patio and French Door Locks Fail — and What We Find on the Door
uPVC door frames expand and contract with temperature, and in a town like Kenilworth where gardens and rear aspects are common, south- and west-facing doors take significant weathering. Over time the door drops slightly on its hinges, the locking points no longer align with the keep, and the handle becomes stiff or impossible to lift. Forcing a stiff handle is the single most common cause of broken spindles, snapped cam followers, and stripped gearbox internals inside the multipoint lock. What starts as a minor inconvenience becomes a security failure — a door that appears shut but whose bolts are not engaged. We carry out upvc door lock repair Kenilworth residents rely on year-round, addressing hinge adjustment, gearbox replacement, and keep strip realignment as part of the same visit where possible.
French doors present a slightly different challenge because two leaves must co-ordinate. The active leaf typically carries a full multipoint gearbox, while the passive leaf is secured by flush bolts at the top and bottom. A french door lever lock or handle set transmits the drive to the gearbox via a square spindle, and when that spindle shears — usually after years of a stiff mechanism being forced — the handle turns but nothing moves. We also encounter faults with the french door mortise lock set fitted on older timber-framed French doors: these require a more traditional approach, often involving a 5 lever rebated mortice lock for french doors where the rebate accommodates the overlapping meeting stiles of the two leaves. Identifying which type of lock is fitted is the first step, and our experienced technicians do that assessment before quoting.