NZR Windows and Doors delivers fast, expert window and door repairs for commercial properties across London, Kent, Essex, and the South East. From faulty closers and broken glazing to stiff locks, misaligned doors, and worn-out mechanisms — we restore full functionality with minimal disruption.
Our qualified in-house team repairs aluminium, uPVC, timber, and composite systems for offices, schools, care homes, retail stores, industrial units, housing associations, and more. All work is carried out to the highest standards, backed by our trusted guarantee and full insurance cover.
Whether you need a one-off repair, an emergency response, or a scheduled maintenance package — NZR keeps your commercial entrances safe, compliant, and working seamlessly.
🔩 Door Repairs and Adjustments
We repair and realign aluminium, uPVC, composite, and fire-rated doors across schools, shops, offices, and industrial units. Includes hinges, closers, floor springs, pivots, panic bars, and multipoint locking systems.
🧲 Access Control and Locking Systems
Restore function to faulty access control systems, electric strikes, coded locks, and intercom-connected doors. We also replace commercial-grade handles, closers, cylinders, and locking mechanisms.
🪟 Commercial Window Repairs and Mechanisms
We fix jammed, damaged, or faulty windows on shopfronts, curtain walling, offices, and stairwells. Includes friction stays, hinges, handles, restrictors, sashes, glazing beads, and full gear replacements.
🌧️ Weatherproofing and Thermal Seals
We replace worn gaskets, bubble seals, brush strips, and drainage channels to eliminate draughts, leaks, and energy loss — keeping your site compliant, warm, and efficient.
🧰 Ongoing Maintenance and General Repairs
From broken glass panels and stiff doors to frame damage and wear-and-tear issues, we provide ongoing maintenance solutions for schools, offices, property managers, housing associations, and retail clients.
✅ FENSA Registered
Certified for residential and commercial installations
✅ CHAS Accredited
Compliant with industry health and safety standards
✅ IOSH Certified
Trained in site safety and risk management
✅ Fully Insured
Public and employer’s liability covered
✅ 10-Year Guarantee
Included with every installation
✅ DBS and CSCS-Cleared Teams
Approved for schools, homes, and construction sites
✅ Clean, Tidy Workmanship
Trusted by housing associations and developers
✅ Same-Day Emergency Response
Covering London, Kent and surrounding areas
✅ Fast, Competitive Quotes
No delays. No excuses.
NZR Windows and Doors responded quickly to an emergency boarding-up request in Canary Wharf, securing the premises without delay. We also replaced a damaged smoke vent window near one of the station access points — ensuring safety, compliance, and peace of mind in one of London’s busiest commercial zones.
NZR Windows and Doors responded to a 24-hour emergency callout at Caffè Nero, Canary Wharf. A large frameless glass panel was damaged, posing a security risk. We removed the broken unit and fitted solid boarding to secure the shop overnight.
We returned shortly after to supply and install a new glass unit.
We work with schools, developers, landlords, and public-sector clients across London and the South East. Submit your project details below — we’ll respond within one working day.
📍 Based in Swanley, covering London, Kent, Essex & more
📞 24/7 Emergency Line: 07503 379215 📞 Office: 020 8970 7013
Mon | 06:30 – 19:30 | |
Tue | 06:30 – 19:30 | |
Wed | 06:30 – 19:30 | |
Thu | 06:30 – 19:30 | |
Fri | 06:30 – 19:30 | |
Sat | 08:00 – 17:30 | |
Sun | 08:00 – 17:30 |