Can you upgrade my uPVC cylinder to an anti-snap lock?

Yes — we can upgrade your cylinder to an anti-snap, anti-drill TS007 3-star rated cylinder on the same visit as any repair.

Do you repair both uPVC doors and windows?

Yes — we repair both uPVC doors and uPVC windows across London.

uPVC Repairs
Across London

South London based · Doors & windows · No full replacement needed

Multi-point locks seized? Handle dropped? Hinges worn? In most cases we fix the problem component — saving you the cost of a full uPVC door or window replacement.

Call 07300 177738 WhatsApp for a Quote

What We Fix

uPVC Problems We Repair

Most uPVC problems are caused by worn or faulty components — not the frame itself. We replace the part, not the whole door or window.

Multi-Point Lock Mechanism

The most common uPVC door problem. The gearbox or locking strip wears out, meaning the door won't lock or the handle feels stiff. We replace the mechanism on the same visit.

Door & Window Handles

Broken, loose, or seized handles replaced on uPVC doors and windows. We carry a range of standard handle sizes and styles in the van.

Hinges

Dropped or misaligned uPVC door? Usually worn hinges. Replacement butt or flag hinges fitted to bring the door back into alignment and ensure it seals properly.

Cylinders & Locks

Upgrade to an anti-snap, anti-drill cylinder — vital security improvement for uPVC doors. Old cylinders are a common point of attack in forced entry.

Shoot Bolts & Keeps

Shoot bolts (top and bottom locking points) replaced when worn or broken. Door keeps adjusted or replaced to restore a proper locking action.

Rubber Seals & Beading

Perished rubber seals causing draughts or water ingress replaced. Glass beading refitted to restore a watertight and draught-free seal.

uPVC Specialists

Door or Window Repair?

We repair both uPVC doors and uPVC windows. Choose below for specific repair information.

uPVC Door Repairs

Multi-point mechanisms, gearboxes, handles, hinges, and cylinders on uPVC doors.

Learn more →

uPVC Window Repairs

Handles, hinges, sealed units, shoot bolts, and frame repairs on uPVC windows.

Learn more →

Why Choose BLD

London’s uPVC Repair Specialists

Same

day repairs

£0

call-out fee

15+

years London experience

Doors

& windows covered

Repair Not Replace

In most cases the problem is with a single component, not the whole frame. Replacing just the faulty part saves you hundreds compared to full replacement.

Parts Stocked on the Van

We carry gearboxes, handles, hinges, and cylinders for the most common uPVC brands — meaning most repairs need just one visit.

Security Upgrade Available

Old uPVC cylinders are a common entry point in break-ins. We upgrade to anti-snap, anti-drill cylinders as part of any repair visit.

uPVC door and multi-point locking mechanism repair in London

FAQ

uPVC Repair Questions Answered

Yes — a door that won’t lock is almost always a failed multi-point lock mechanism or gearbox. We carry replacement gearboxes and locking strips for the most common uPVC door brands and can usually repair on the same visit.

A multi-point lock gearbox replacement typically takes 30 to 60 minutes on site. The door will be fully functional and re-tested before we leave. A full locking strip replacement may take slightly longer depending on the door length.

A dropping window handle is usually caused by a worn spindle connection or a loose handle spindle. In some cases the espagnolette mechanism inside the frame has worn out. Both are straightforward repairs we can carry out on the same visit.

Yes — cylinder snapping is the most common method of forced entry on uPVC doors. We can upgrade your cylinder to an anti-snap, anti-drill, anti-pick TS007 3-star rated cylinder on the same visit as any repair, or as a standalone job.

Yes — we repair uPVC doors and uPVC windows. For door-specific information see our uPVC Door Repairs page, and for windows see uPVC Window Repairs.

Transparent Pricing

uPVC Repairs — Guide Prices

No call-out fee. We confirm a fixed price over the phone before we start. These are typical guides, not maximums.

Service	From	Typical time

uPVC handle replacement	Call for a quote	20-30 mins
Multi-point gearbox replacement	Call for a quote	60-90 mins
Hinge replacement / adjustment	Call for a quote	30-45 mins
Cylinder swap (anti-snap)	Call for a quote	20-30 mins
Door re-alignment after dropping	Call for a quote	30-45 mins
Sealed unit swap	Call for a quote	30-60 mins

No call-out fee

Fixed price before we start

Same rates day or night

Prices include parts & labour for the most common variants. Unusual locks (high-security commercial cylinders, custom multi-point gearboxes, large shopfront glass) may sit higher — we'll always confirm a fixed price after a quick phone description before we set off.