Window Repair Services in London
Misted units, broken hinges, faulty handles, draughty seals and timber rot — repaired without replacing the whole window.
World Mazza Enterprise provides professional window repairs across London for uPVC, aluminium, timber and sash windows. We replace misted-up sealed units, repair broken hinges, handles, locks and friction stays, refurbish sash cords, repair rotten timber and draught-proof leaking frames — without replacing the entire window. Most repairs completed within a week, with a written workmanship guarantee.
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Concise, expert answers for the most-asked questions.
What is it?
Window repair covers replacement of misted double-glazed units, broken hinges, handles, locks, sash cords, brush seals and rotten timber sections — keeping the existing window frame rather than full replacement.
Cost in London
In London: misted sealed unit £95–£220, hinges £55–£95, handle £45–£75, espagnolette lock £85–£165, sash cord £85–£145, emergency board-up from £140.
Best for
Best for London homeowners with failed double glazing or broken hardware, landlords needing fast HMO-compliant repairs, and conservation properties wanting sympathetic traditional sash repair.
Our Services
Misted Double Glazing
Failed sealed units replaced like-for-like — no need to replace the frame. Energy-rating maintained or upgraded.
Hinges, Handles & Locks
Friction stays, espagnolette locks, handles and shoot-bolts replaced — including obsolete and discontinued patterns.
Sash Window Repair
Broken sash cords, weighted balances, parting beads and staff beads repaired by traditional joinery methods.
Draught-Proofing
Leaky brush seals, gaskets and weatherstripping replaced — cut drafts and noise without replacing the window.
Timber Rot Repair
Localised rot cut out and replaced with treated timber splices — full window kept, cost slashed vs replacement.
Emergency Make-Safe
Smashed glass, burglary damage and storm damage made safe and weather-tight within 24 hours.
Who We Work With
Homeowners
Fast diagnosis, fixed quote, repair scheduled within the week.
Landlords
HMO-compliant repairs with documented before/after photos and itemised invoicing.
Letting & Managing Agents
Multi-property scheduling with consolidated invoicing for portfolios.
Conservation Properties
Traditional sash and timber window repairs sympathetic to listed-building requirements.
Why Choose Us
Repair First, Replace Last
Honest assessment — repair if it makes economic sense; recommend replacement only if it does not.
£1m public liability insurance
£1m public liability insurance on every job.
Same-Week Bookings
Most window repairs scheduled within 5 working days. Emergency make-safe within 24 hours.
Obsolete Parts Sourced
Specialist hardware library — including discontinued hinges, handles and friction stays.
Energy-Rated Glass
Replacement sealed units are A-rated as standard — improves your energy bills, not just appearance.
Workmanship Guarantee
12-month written workmanship guarantee, plus full manufacturer warranty on hardware and sealed units.
How Our Window Repair Service Works
Assess, quote, schedule, repair, guarantee.
- 1
Free Assessment
We visit, diagnose the actual fault, and provide an honest repair-or-replace recommendation.
- 2
Fixed-Price Quote
Written, itemised quote covering parts and labour. No surprises on the day.
- 3
Schedule Within the Week
Most repairs booked within 5 working days. Emergency make-safe within 24 hours.
- 4
Repair on the Day
New sealed units, hinges, locks, seals or sash cords installed properly with the correct manufacturer parts.
- 5
Sign-Off & Guarantee
Before/after photos, signed completion certificate and 12-month written workmanship guarantee.
Pricing Guide
Indicative starting prices. Final quotes are confirmed after we assess the work.
| Service | Guide Price |
|---|---|
| Replace one misted sealed unit | £95 – £220 |
| Replace window hinges (per window) | £55 – £95 |
| Replace window handle | £45 – £75 |
| Replace espagnolette lock mechanism | £85 – £165 |
| Sash cord repair (per sash) | £85 – £145 |
| Emergency board-up (call-out) | From £140 |
* Indicative pricing only. Every project is individually quoted.
Areas We Cover
What our customers say
Rated 4.2 out of 5 from 11 Google reviews
- General
“Easy to book, quick turnaround on quote, contract clearly defined work to be carried out. Would recommend”
Rachael O
Google review - General
“The team were professional and polite. They were transparent, and kept me informed throughout the entire process. The work was completed to a high standard, and I would happily recommend this company.”
Lenia Vassall
Google review
Frequently Asked Questions
Frequently Asked Questions
Need a Window Repaired in London?
Free assessment, fixed-price quote, repair scheduled within the week. Emergency make-safe within 24 hours.