Patio & French Door Locks
Patio sliders and French doors are a popular feature in Beckenham homes — from the Victorian terraces off Beckenham High Street to the newer builds near Kelsey Park — but their locking mechanisms are often the first thing to fail and the last thing homeowners think about until something goes wrong. Whether the multipoint lock on your uPVC slider has dropped its keep, the gearbox has seized, or one leaf of your French doors no longer shoots its bolts flush into the frame, Beckenham Locksmith is the local team to call. We are a 24/7 mobile service, so a trained and insured technician comes directly to your door — no waiting for a shop appointment, no leaving the property unsecured overnight.
Open 24 hours, 7 days a week · Fully insured
“Understanding exactly what has failed on a patio or French door lock is the difference between a quick repair and an unnecessary full replacement. Our experienced locksmiths carry a wide range of replacement gearboxes, cylinders, keeps, espagnolette rods, and mortice lock sets in the van, meaning most jobs are resolved on the first visit. We confirm an exact up-front price before any work begins, so there are no surprises on the invoice. If you need us urgently, call 020 3757 5562 and we will send someone straight away — we are usually with you in about 30 minutes.
What we do
Available 24/7
Day, night, weekends and bank holidays — a real local locksmith answers and sends a fully-stocked van.
We come straight away
Based in Beckenham, we send a locksmith straight away — we're usually with you in about 30 minutes.
Fully insured
Vetted locksmiths, a clear price on the phone, and no surprise add-ons when we arrive.
Damage-free entry
We pick and bypass locks the right way, so most lockouts are solved without drilling anything.
Frequently asked questions
My uPVC patio door handle lifts but nothing locks — what has failed?
This is almost always the gearbox inside the door slab. The gearbox is the central mechanism that translates the upward handle movement into the activation of the espagnolette rods and locking hooks. When the plastic internals crack or wear through, the handle moves but no tension reaches the rods. In most cases we can replace the gearbox on the first visit using a compatible unit from stock, without replacing the door or the entire handle assembly. It is worth calling us promptly rather than leaving the door unsecured — a patio door that cannot lock is a straightforward entry point.
Can a French door mortise lock be fitted if the doors overlap (rebated)?
Yes, but the lock must be a rebated version. Standard mortice lock cases have a flat faceplate, which will not sit correctly in the stepped rebate where one French door leaf overlaps the other. A 5 lever rebated mortice lock for French doors has a cranked or stepped faceplate that accommodates that overlap and allows the bolt to shoot squarely into the keep on the inactive leaf. Getting the correct specification matters for both security and smooth operation — our locksmiths measure the rebate depth and door thickness before selecting the replacement unit.
How do I lock French doors with lever handles if there is no key barrel fitted?
Some French door lever handle sets are supplied without a key-locking function, relying entirely on the multipoint gearbox and cylinder below. If your handles have no barrel and you want to be able to key-lock at handle level, the handle set needs to be replaced with one that includes an integrated barrel and cam. Alternatively, ensuring the multipoint lock and euro cylinder below are in good working order and correctly used provides effective security on their own. Our technicians can assess your existing handle configuration and advise on the most practical solution for your specific doors.
What factors affect the price of a patio or French door lock repair in Beckenham?
Several things shape the final quote: the type and specification of the replacement part needed (a standard gearbox differs in cost from a high-security anti-snap cylinder or a 5 lever mortice lock set); the complexity of the job, including whether frame adjustments or keep repositioning are required; the time of day, since evening, weekend, and bank holiday call-outs carry a different rate; and travel distance to your postcode. We confirm the exact price on the phone before we come out, so you know precisely what you are agreeing to before any work begins.
Is it possible to open a seized patio or French door lock without damaging the door?
In many cases, yes. Our first approach is always to work damage-free — using the correct tools to manipulate or bypass the specific mechanism without marking the uPVC frame or the door furniture. The outcome depends on how the lock has failed: a snapped cylinder or a completely jammed gearbox may require drilling, but even then our technicians work precisely to minimise the area affected and always refit a new, secure lock before leaving. We will never leave a door open and unsecured.
Do you work on commercial premises as well as homes — for example, a shop with a French door entrance?
Yes. As a commercial door locksmith, we attend offices, retail units, and business premises as well as residential properties across Beckenham and the surrounding area. Commercial French and patio doors sometimes use heavier-duty hardware or specific multipoint systems, and our technicians are experienced across the range. If you manage a commercial property and need a lock repair or replacement outside normal business hours, our 24/7 service means we can attend without disrupting trading. Call 020 3757 5562 and we will confirm availability and pricing before coming out.