Patio & French Door Locks

uPVC patio sliders rely on a multipoint locking system: a central gearbox drives multiple hook bolts and rollers into keeps embedded in the frame. Over time, the door drops fractionally on its hinges or the track wears, pulling those bolts out of alignment. The result is a handle that feels stiff or refuses to lift, a door that will not lock unless you heave it upward, or hook bolts that retract but no longer reach their keeps. French doors face a slightly different set of problems — the two leaves flex independently, so the rebated edge where they meet is a stress point. A 5 lever rebated mortice lock for French doors manages exactly that meeting edge, and when the case cracks or the levers corrode, the door can appear locked while offering almost no resistance. Our technicians are trained to diagnose the specific failure point rather than replacing everything automatically, keeping the work proportionate to the actual fault.

Euro cylinders fitted to patio and French door multipoint locks carry an additional risk that Abbey Wood residents should know about: cylinder snapping. A standard euro cylinder can be snapped in seconds with basic tools, giving an intruder direct access to the cam that retracts the lock. Anti-snap, anti-pick, anti-drill cylinders — including those rated to TS007 3-star — are the practical answer, and fitting one is straightforward for a skilled locksmith during the same visit as a repair. If your cylinder protrudes more than a few millimetres beyond the door furniture on either side, that is a warning sign worth acting on before it becomes an emergency.

A repair visit typically starts with the technician checking the door alignment before touching the lock itself, because a misaligned door will defeat even a brand-new mechanism within months. For uPVC patio door lock repair London-wide, the most frequent jobs are gearbox replacements, hook bolt adjustments, keep realignment, and handle spindle replacements. French door work more often involves the mortise lock or lever lock set at the meeting stile. A French door mortise lock set must be matched carefully to the existing backset, case dimensions, and forend width — fitting the wrong case means the faceplate will not sit flush and the bolt throw will not align with the keep. We carry a range of common sizes on the van, which means most replacements can be completed on the first visit without ordering parts.

For a full door lock replacement London, we always check whether the existing multipoint mechanism can be rebuilt with new components or whether the entire shootbolt strip needs to come out. On older patio sliders, the gearbox housing is sometimes no longer made, and a compatible modern replacement must be identified. This is where experience matters: our team has worked on the full range of uPVC systems fitted across south-east London over the past two decades, including those on the larger housing developments that expanded along the Thames Estuary corridor into Abbey Wood during the late 1990s and 2000s. If you are unsure whether your lock is repairable or needs full replacement, call 020 3757 6072 — we answer 24/7 and can often give a preliminary assessment over the phone before we travel out.

A failed patio or French door lock can leave you locked out London-style: standing in your own garden with no way back into the house, or inside with a door that will not secure properly overnight. Both situations warrant an immediate response. As a 24 hour locksmith London service, we dispatch a technician as soon as we receive your call and are usually with you in about 30 minutes. When you call, we will ask you to confirm your address and, where relevant, verify your connection to the property — this is a standard step we take to protect every resident in the area, not an inconvenience. Before the technician begins any work, you will receive a confirmed, fixed price so there are no surprises on completion.

Damage-free entry is our first approach wherever the lock condition and door type allow. On uPVC patio and French doors, it is often possible to regain access without drilling or forcing the frame, which matters both for the door's integrity and for insurance purposes. If the lock or cylinder is beyond saving, we will explain clearly what needs replacing and why, then carry out the lock change London-side on the same visit using parts suited to the door. We do not leave a job with the door in a worse state of security than we found it.

The phrase 'French door knob lock' comes up regularly in searches, but on most modern uPVC French doors in the UK a knob is not the right fitting — lever handles are standard, and the lever lock set underneath needs to match the multipoint gearbox or the separate mortise lock case at the meeting stile. Understanding how to lock French doors with lever handles correctly is worth a moment of explanation: on a typical uPVC French door, lifting or pressing the lever engages the multipoint bolts, but the door is not truly locked until the cylinder is turned with a key. Many break-ins on French doors happen because residents lift the handle and consider the door secure without completing the cylinder turn. A simple habit change eliminates the risk. Where the door has an older-style mortise lock rather than a multipoint strip, a mortise lock for French doors with a 5 lever mechanism is the minimum standard most home insurers expect. Our technicians will confirm what your policy requires if you are unsure.

The question of which lock to specify is also relevant for landlords and letting agents in Abbey Wood who manage properties with patio or French door access — a lock change London property managers request often needs to meet a specific insurance or tenancy requirement. We can advise on appropriate options, fit them in a single visit, and provide a receipt detailing the work completed. Pricing for any job depends on the type of lock mechanism involved, the parts required, the time of day, and travel distance — all of this is confirmed in a fixed up-front quote before we start. Call 020 3757 6072 to discuss your specific door and get a clear figure before committing to anything.

Abbey Wood Locksmith offers the following specific services for patio sliders and French doors across the SE2 postcode district and surrounding areas: uPVC patio door multipoint gearbox replacement; hook bolt realignment and adjustment; patio door keep repositioning and reinforcement; patio door handle and spindle replacement; euro cylinder upgrade to anti-snap specification on patio doors; euro cylinder upgrade on French doors; French door mortise lock fitting and replacement; 5 lever rebated mortice lock for French doors installation; French door lever lock set replacement; French door meeting stile keep adjustment; French door hinge realignment to restore locking geometry; shootbolt rod replacement on uPVC French doors; mushroom cam replacement on multipoint systems; patio door track cleaning and lock function restoration; damaged cylinder extraction without door removal where possible; anti-pick cylinder fitting on French and patio doors; anti-drill cylinder fitting; TS007 3-star cylinder supply and fitting; damaged lock case extraction following attempted break-in; frame repair and keep replacement after forced entry; multipoint lock strip replacement on patio sliders; French door multipoint mechanism replacement; nightlatch fitting to French door as secondary security measure; door furniture replacement including handles and escutcheons; and security survey of patio and French door arrangements including advice on additional bolts or hinge bolts. Every service listed is available on a 24/7 basis, carried out by trained, insured technicians who travel to your address — there is no workshop to visit and no need to remove any hardware yourself.