For FM providers, managing agents and supply chain teams

    Your Glazing and Door Subcontractor Across London

    Reactive door and glass repairs, planned maintenance and 24/7 make-safe for FM providers and managing agents, with the compliance paperwork your supply chain team needs and a photo report on every job.

    24/7 Emergency – 07503 379 215
    • CHAS Gold · Constructionline Gold
    • £10m public, employer & PI cover
    • Photo report on every job
    • 24/7 emergency line

    Trusted by Brands, FM Teams and Public Sector Clients

    Commercial glazing, door repairs and maintenance for retail, offices, education, healthcare and managed buildings across London.

    • Canary Wharf Group
    • Costa Coffee
    • Gail's Artisan Bakery
    • NHS Approved Contractor
    • Dartford Borough Council
    • Sharp Corporation
    • Anytime Fitness
    • Panavision
    • Pizza Express
    • Caffè Nero
    • Big Motoring World
    • Mears Group
    • WTW (Willis Towers Watson)
    • XBP Europe

    Not sure what you need?

    What's happening with your door or glass?

    Pick the one that fits and we'll tell you the quickest way to get it sorted.

    What Your Supply Chain Team Gets

    Built around how FM helpdesks raise, track and close jobs.

    • Pre-Qualified

      CHAS Gold and Constructionline Gold accredited, with £10m public, employer and professional indemnity cover.

    • Paperwork Ready

      Insurance certificates, accreditation details and site-specific RAMS supplied for onboarding and before works start.

    • Photo Reports

      Before and after photos, fault found, parts used and recommendations on every job, ready to attach to your ticket.

    • Parts on the Van

      AXIM, Dorma, GEZE and Alpro floor springs, pivots and closers carried, so most door faults are fixed first visit.

    • 1–2 Hour Emergency Response

      Engineer on site within 1–2 hours across London, 24/7, for make-safe, boarding and emergency glazing.

    • London and the South East

      Offices, retail, schools, healthcare and managed residential across London, Kent, Essex and Surrey from our Swanley base.

    Proof

    Work for Offices, Multi-Site Retail and Managed Buildings

    The kind of tickets FM helpdesks raise every day, photographed on site by our engineers.

    Broadridge Financial Solutions

    Arthur Street, City of London

    Both floor springs replaced and maglock aligned

    The brief
    A double glass entrance in a City office was failing to close and hold, affecting security on the floor.
    What we did
    We set up a barriered zone, removed both glass leaves, replaced the two floor springs, reinstalled the doors and aligned the maglock.
    The result
    Both leaves now close and hold correctly and the maglock engages first time.
    View full project

    More projects (18)

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    Response levels

    How We Prioritise Your Jobs

    Every job is logged with a priority so the right engineer and parts go first time. Emergencies in London get an engineer on site within 1–2 hours, 24/7. Contract response times for other priorities are agreed with you during onboarding.

    PriorityOur response
    Priority 1 · EmergencyBuilding can't be secured, broken glass, safety riskEngineer on site within 1–2 hours across London, 24/7, to make safe and secure
    Priority 2 · UrgentDoor won't lock, close or open properlySame-day attendance where possible
    Priority 3 · RoutineFaults that aren't a security or safety riskBooked in at an agreed time, with the right parts identified first
    Planned maintenanceScheduled servicing of doors, closers and windowsQuarterly, six-monthly or annual visits on an agreed schedule

    What We Cover for FM Contracts

    • Reactive Door Repairs

      Floor springs, pivots, top arms, transom closers, locks, maglocks and panic hardware on aluminium and glass doors.

    • Glass Replacement

      Broken, cracked and misted units in doors, shopfronts, windows, balustrades and curtain walling.

    • Emergency Make-Safe

      24/7 boarding, temporary glazing and securing of entrances after damage or break-ins.

    • Planned Maintenance

      Scheduled servicing of entrance doors, closers, floor springs and windows, with condition reports and remedial quotes.

    • Windows & Restrictors

      Hinges, friction stays, handles and window restrictors repaired or replaced across occupied buildings.

    • Installations

      New entrance doors, shopfronts, curtain walling and commercial windows when repair isn't viable.

    Documents Available for Onboarding

    • CHAS Gold certificate
    • Constructionline Gold membership
    • £10m public, employer and PI insurance certificates
    • Site-specific RAMS and method statements
    • Company number 03917768 · VAT GB 689 6943 49
    • Photo report template and sample job reports
    • Signed client reference letters (local authority, school, contractors)

    Professional. Certified. No excuses.

    • FENSA Registered
    • CHAS Gold Accredited
    • Constructionline Gold
    • DBS-Cleared Teams
    • Fully Insured£10m public, employer and PI cover

    Supply chain enquiry

    Request Our Supplier Pack

    Tell us your company, the sites or region and what you need. We'll send our accreditation and insurance details and arrange a call.

    1What do you need?
    2Your details

    Your enquiry goes to our commercial team – we'll respond the same working day. Urgent repairs: call 07503 379 215.

    We only use these details to respond to your enquiry. See our privacy policy.

    Reviews

    Rated 4.9 on Google

    From 32 reviews by businesses and homeowners across London and Kent.

    • Door repair

      “Super super company, cannot thank Zach and the team enough, we are a 24 hour Gym and had a security issue with our door and alarm system which needed a complete replacement door frame, door and new magnetic lock alarm system, the price was very reasonable, the work was carried out to a phenomenally high standard, the work was clean, tidy and exceptional. The service was top notch and the clean up afterwards was showroom quality, efficient service and very personable and would highly highly recommend these guys. There simply is not enough words or superlatives to say how great these guys and look no further”

      AATF AlpertonGoogle review
    • Shop door repair

      “Amazing service and professionalism from Zach and the team. He was able to fix our shop door the same day we called. Thank you!”

      AAlexandru VladGoogle review
    • Emergency repair

      “I had an unexpected emergency where my door was damaged, I called NZR windows and doors they were around within an hour and completed the repairs at a great price. I would highly recommend.”

      EEva HilderGoogle review

    Signed client references

    What Our Commercial Clients Put in Writing

    Taken word for word from reference letters written by a local authority, a school and the contractors we work for. Full letters available on request.

    Request the full letters
    “This work was carried out very professionally and to a very high standard. I have now used NZR on numerous occasions and have no hesitation in recommending this contractor to other internal departments and external organisations.”

    The Council has since used NZR for further glazing works and commissioned us to write a specification for large acoustic windows and commercial doors.

    Corporate Building SurveyorLocal authority, Property ServicesFleetdown Community Centre atrium, won through the Council's tender process
    “Always delivered to a high standard, including during unsociable hours. Excellent, especially responsive for emergency works in high-security areas.”

    Emergency glass replacement, boarding up, responsive repairs and glazing replacements, often out of hours.

    DirectorMechanical & electrical contractorJubilee Place walkways and restaurant, Canary Wharf, 2023 to 2025
    “From our very first enquiry, NZR Windows & Doors has proven to be an invaluable partner. I wouldn't hesitate to recommend NZR windows & Doors to anyone looking for reliable, high-quality reactive and planned maintenance repairs.”

    Emergency glazing repairs, glass replacements, reactive maintenance and full door and frame replacements, with fast response times.

    Building ManagerConstruction contractorVarious Costa Coffee sites across London and the South East, 2024 to present
    “The works were completed on time and to a good standard, ensuring the school was ready for the start of the new academic year. Throughout the project, NZR demonstrated a professional and proactive approach.”
    School Business ManagerSEN school, West London22 external aluminium door sets replaced, summer holidays 2026

    FM Supply Chain FAQs

    Do you work as a subcontractor to FM providers?

    Yes. We carry out reactive door and glazing repairs, planned maintenance and make-safe work for FM teams, managing agents and main contractors, on a per-job or contract basis.

    What accreditations do you hold?

    CHAS Gold and Constructionline Gold, with £10m public liability, employer's liability and professional indemnity cover. Certificates are included in our supplier pack.

    Can you work to our helpdesk and PO process?

    Yes. We can take jobs by email or through your system, quote against your PO numbers and send a photo report with each completed job so the ticket can be closed.

    What response times do you work to?

    Emergencies (a site that can't be secured, broken glass or a safety risk) get an engineer on site within 1–2 hours across London, 24/7. Urgent faults are attended the same day where possible, and routine and planned work is booked to your agreed schedule.

    Which areas do you cover?

    London and the South East, including Kent, Essex and Surrey, from our base in Swanley, Kent.

    Can you send RAMS before attending?

    Yes. Site-specific RAMS and method statements are provided before works start, including for occupied buildings and out-of-hours working.