About Window Fitters Ltd

About Window Fitters Ltd: London & Surrey Fenestration Specialists

Professional fenestration installation and commercial glazing subcontracting demand trade-certified installers, strict Building Regulations compliance, and accountable workmanship. Window Fitters Ltd is a specialist glazing installation contractor headquartered in Croydon, serving homeowners, residential building contractors, architects, and Tier-1 and Tier-2 commercial main contractors across Greater London, Surrey, and the South East. We dispatch directly employed fitting teams from our registered Croydon office (139 Wentworth Road, CR0 3HZ) via structured travel-time tiers: Local tier under 15 minutes travel at £540 per day, Extended tier 15 to 45 minutes at £580 per day, and Outer Surrey over 45 minutes with a half-day minimum booking.

Founded in October 2016 and led by Active Director and Head Window Fitter Marian Gheorghe, Window Fitters Ltd bridges the gap between high-volume systems manufacturers and precision on-site delivery. We operate on a dual procurement framework: providing complete Supply and Fit glazing packages and competitive Labour-Only glazier subcontracting services. We install energy-efficient uPVC casement windows, flush sash joinery alternatives, architectural aluminium systems, traditional timber box sash windows, composite entrance doorsets, large-span bifold doors, and commercial structural curtain walling engineered strictly to British Standard BS 8213-4 and UK Building Regulations.

Company History, Leadership and Core Mission Since 2016

Window Fitters Ltd was incorporated on 18 October 2016 (Company Registration No. 10415531) with a singular operational focus: to provide main contractors, developers, and discerning homeowners with transparent, high-precision fenestration installation free from retail sales markups, commission-driven salespeople, and unaccountable sub-tier labour brokers. Under the leadership of Marian Gheorghe, who brings decades of hands-on fenestration engineering and site supervision experience, the company has grown from a specialized residential window fitting unit into a respected South London commercial glazing contractor.

Marian Gheorghe maintains active daily oversight of site operations, technical surveys, structural aperture assessments, and quality compliance. Unlike retail glazing brokers who outsource installation packages to unvetted piece-rate labourers, Window Fitters Ltd utilizes directly employed, CSCS-carded glazier teams. Every project is executed with laser-guided precision, calibrated bridge packers, torque-controlled fixings, and high-modulus perimeter weatherseals, ensuring every window and doorset operates smoothly throughout its design life.

Corporate Registration, Waste Carrier Licensing and Statutory Register

Complete regulatory compliance and transparent corporate administration underpin every contract we deliver. Our official corporate details and statutory registrations in England and Wales are verified below:

Comprehensive Commercial Insurance Protection and 10-Year Guarantee Terms

To provide commercial clients, principal contractors, and homeowners with complete operational security, Window Fitters Ltd maintains extensive insurance coverage underwritten by established UK insurance syndicates:

Full insurance policy schedules, broker verification letters, and warranty certificates are issued with commercial pre-qualification questionnaires (PQQs) and project handover packs. Review our published statutory certificates and warranty terms and inspect our legal documents repository.

Operating Model: 80-90% Commercial Subcontracting & Trade Glazing

Window Fitters Ltd operates primarily as a commercial fenestration subcontractor. Approximately 80% to 90% of our annual operational capacity is dedicated to B2B subcontracting, partnering with Tier-1 and Tier-2 principal contractors, regional residential developers, commercial shopfitters, and trade window fabricators. We execute packages under standard JCT Design and Build (DBSub), JCT Minor Works (MWSub), and JCT Intermediate (ICSub) subcontract conditions, adhering to Housing Grants, Construction and Regeneration Act 1996 payment notice mechanisms and Inspection and Test Plans (ITPs).

The remaining 10% to 20% of our capacity serves private residential homeowners seeking high-specification fenestration at direct trade rates. By eliminating high-pressure salespeople, showroom overheads, and retail marketing margins, we provide domestic clients with trade-direct pricing, wholesale profile access, and precision installation by the same experienced commercial glaziers who fit high-specification multi-storey envelopes.

Workforce Qualifications, Plant Logistics and Technical Tooling

Safe, compliant site operations require properly credentialed operatives and professional plant equipment. All Window Fitters Ltd site operatives are directly managed, hold photographic CSCS cards verified through CSCS Smart Check, and possess relevant plant certifications:

• Site Leadership & Supervision: SSSTS (Site Supervisor Safety Training Scheme) qualified supervisors and First Aid at Work certified personnel on all commercial sites.
• Skilled Fenestration Fitters: Blue CSCS Skilled Worker cardholders with extensive competence across uPVC, architectural aluminium, structural timber, and stick curtain walling. Inspect our CSCS card guide and meet our dedicated window fitting team.
• Access & Plant Tickets: Operatives hold IPAF 3a/3b mobile elevating work platform tickets, PASMA mobile aluminium tower certificates, and CPCS Slinger / Signaller qualifications.
• Heavy Glass Lifting Capabilities: For oversized structural panes, sliding patio doors, and multi-storey curtain walling, we deploy compact Maeda MC285 and Unic URW-095 spider crawler cranes paired with Woods Powr-Grip MRTA611LDC dual-circuit vacuum lifters (load capacity up to 600 kg) under LOLER 1998 and BS 7121 lifting plans.
• Precision On-Site Tooling: Fitted commercial vans are equipped with Hilti and DeWalt cordless power tools, calibrated laser levels, digital angle finders, glazing paddle tools, and setting block kits to ensure accurate squareness and perimeter alignment.

Environmental Sustainability and Responsible Waste Management

Fenestration replacement produces significant volumes of obsolete building materials. As an Environment Agency licensed Upper Tier Waste Carrier (CBDL650268), Window Fitters Ltd is committed to zero unnecessary landfill disposal. Every project follows a structured waste segregation and recycling protocol:

Duty of care waste transfer notes are provided for commercial and residential contracts upon request. Learn more about our site environmental protocols in our green building practices guide.

Statutory Building Regulations Compliance Framework

Every fenestration installation executed by Window Fitters Ltd complies fully with statutory UK Building Regulations across all performance criteria:

• Approved Document L (Conservation of Fuel and Power): Replacement windows achieve a whole-window Uw of 1.4 W/m²K or better (Window Energy Rating Band B minimum); replacement doors achieve Ud 1.4 W/m²K. Review our detailed window U-value guide and energy ratings guide.
• Approved Document F (Ventilation): Maintenance of adequate background ventilation using controllable trickle vents (minimum 8,000 mm² equivalent area in habitable rooms, 4,000 mm² in wet rooms). Read our trickle vents guide.
• Approved Document K (Protection from Falling, Collision and Impact): BS EN 12600 Class 1 safety glass fitted in critical impact zones: doors, side panels within 300 mm, and low-level glazing below 800 mm.
• Approved Document B (Emergency Egress): Egress windows in habitable upper-floor rooms provide an unobstructed openable area of at least 0.33 m², with minimum dimensions of 450 mm in height and width.
• Approved Document Q (Security in Dwellings): New-build and major conversion residential installations incorporate PAS 24:2022 certified multi-point locking hardware and laminated safety glass.
• Building Control Certification: Qualifying works are certified through Local Authority Building Control (LABC) or approved building control inspectors. Consult our comprehensive Building Regulations guide.

Explore our complete service offerings across London and Surrey: inspect standard uPVC casement windows, slimline aluminium windows, traditional sliding sash windows, and panoramic doors including bifold doors and sliding patio doors. Discover our dedicated South West London regional coverage in our South West London door installation hub, read commercial insights in our commercial B2B contracting guide, review customer feedback in our case studies, check detailed pricing in our installation cost guide, and contact our technical surveying team to discuss your upcoming project.

Frequently Asked Questions About Window Fitters Ltd

Find answers to common questions about our founding, direct employment model, statutory insurances, and commercial glazing subcontracting across London and Surrey.