Window Fitters Ltd employs 100% directly hired, CSCS-carded window fitters, door installers, and glazing fitters based in Croydon, serving London and Surrey. Our teams carry £5,000,000 Commercial Public Liability Insurance and £10,000,000 Employers' Liability Insurance, operating under CDM 2015 RAMS with zero reliance on unvetted sub-contractors.
100% Directly Employed Glazing Teams Across London & Surrey
Every window fitter, door installer, and glazing fitter on our payroll is directly employed by Window Fitters Ltd. We do not use agency workers, temporary labour, or unvetted sub-contractors. This 100% direct employment guarantee means we control the training, safety compliance, and quality standards of every operative who works on your property.
Our directly employed model removes the risks associated with hiring unknown tradespeople through agencies. You deal with one company. One team. One point of accountability. If anything needs correcting after the installation, we send the same fitters who completed the original work.
Our Croydon-Based Fitting Workforce
Window Fitters Ltd operates from our registered office at 139 Wentworth Road, Croydon, CR0 3HZ. Our fitting teams deploy daily across Greater London, Surrey, and surrounding areas within a 40-mile radius. Director Marian Gheorghe has over 15 years of hands-on fenestration experience and directly supervises all installation crews on active sites.
Our workforce structure includes:
- Lead Fitters: Senior glaziers with 10+ years of trade experience. Each lead fitter manages a 2 to 4 person crew and handles technical decisions on site, such as lintel assessments, fixing strategies, and weatherproofing methods.
- Glazing Operatives: Fully trained installers skilled in frame positioning, glass handling, mechanical fixing, foam insulation, and perimeter sealing. Every operative holds a valid CSCS card.
- Site Supervisors: For commercial and multi-unit projects, our dedicated site supervisors coordinate logistics, manage RAMS documentation, and report progress to the main contractor.
CSCS Card Accreditation: What It Means
The Construction Skills Certification Scheme (CSCS) card proves that a construction worker has the right training and qualifications for their role on site. Holding a valid CSCS card is a requirement for entry to virtually all UK construction sites.
Our window fitters and door installers hold the following CSCS card levels:
- Blue Skilled Worker Card: For trained glaziers who have completed a recognised NVQ Level 2 or Level 3 in fenestration installation.
- Gold Advanced Craft Card: For senior fitters with NVQ Level 3 and supervisory experience.
- Black Manager Card: Held by site supervisors with NVQ Level 4 or above in construction management.
Every CSCS cardholder must also pass the CITB Health, Safety and Environment Test. This test covers working at height, manual handling, asbestos awareness, electrical safety, and fire prevention.
CDM 2015 Site Governance & Safety Standards
All installation work by our window fitters follows the Construction (Design and Management) Regulations 2015 (CDM 2015). CDM 2015 places legal duties on clients, designers, and contractors to manage health and safety risks during construction projects.
Before starting any work, we complete the following:
- Risk Assessment: A written document identifying all hazards on the specific job site, including working at height, manual handling of heavy glass units, use of power tools, and proximity to live traffic or pedestrians.
- Method Statement: A step-by-step procedure for completing the installation safely. This covers scaffold access, glass handling routes, waste disposal, and emergency procedures.
- Site Induction: All operatives complete a site-specific safety induction before starting work. On commercial sites, this is coordinated with the principal contractor.
Learn more about our safety documentation on our RAMS document guide and safety measures pages.
Direct Employment vs Agency Labour: Why It Matters
Many glazing companies use temporary agency workers or self-employed sub-contractors to fill their fitting teams. This creates real risks for property owners and main contractors:
| Factor | Agency / Sub-Contractor Labour | Window Fitters Ltd (Direct Employment) |
|---|---|---|
| Accountability | Worker may never return to fix snagging issues | Same fitter returns for any remedial work |
| Training | Variable skill levels, unknown training history | All operatives trained in-house to our standards |
| Insurance | May rely on personal insurance with low limits | £5,000,000 Commercial Public Liability & £10,000,000 Employers' Liability Insurance |
| Site Safety | Inconsistent safety compliance | Full CDM 2015 RAMS on every project |
| CSCS Cards | May not be verified | 100% verified CSCS cardholders |
Window Fitting Skills & Profile Systems
Our window fitters are skilled in installing every major profile system available in the UK market:
- uPVC Casement Windows: Deceuninck 2500, Liniar Sculptured, Rehau T70C, and Profile 22 Optima systems
- Vertical Sliding Sash Windows: Spectus and Quickslide heritage uPVC profiles, plus traditional timber sash restoration
- Aluminium Windows: Slimline thermally broken profiles from AluK, Reynaers, Schueco, and Smart Systems
- Triple-Glazed Windows: High-performance alu-clad and timber systems for Passivhaus-grade builds
Door Installation Expertise
Our door installers handle every type of residential and commercial doorset:
- Composite entrance doors with PAS 24 locking
- Aluminium bifold doors with stainless steel roller tracks
- Sliding patio doors and French doors
- FD30 and FD60 fire doorsets with intumescent seals and certified closers
- Low-threshold Part M accessible doors
Trade Tools, Lifting Machinery & Vehicle Fleet
To deliver precision fitting without compromising glass integrity or site safety, our window fitters and door installers are equipped with professional-grade trade tools and heavy handling machinery:
- Battery-Powered Vacuum Glass Lifters: Dual-circuit suction cups rated for glass panels up to 250kg, allowing safe mechanical maneuverability of heavy double and triple-glazed units.
- Laser-Guided Alignment Systems: Rotating laser levels for multi-storey frame positioning and opening verification within a ±1mm tolerance.
- Dedicated Fleet Vehicles: Custom glass-rack equipped vans fitted with internal glass transport channels, securing units during transit against vibration and edge chips.
- Dust Extraction & Surface Protection: HEPA-filtered dust extraction units and heavy-duty floor protection runners used on every residential installation.
On-Site Quality Assurance & Final Inspection Protocols
Before leaving any residential or commercial site, our lead window fitters complete a comprehensive 12-point quality assurance audit. This includes checking perimeter mastic seal continuity, testing multi-point door latching alignment, auditing trickle vent airflow operation, measuring frame diagonal squareness, and verifying safety glass etched markings under Document K (BS EN 12150). The client or site agent signs off on the completed inspection checklist before final handover.
Local Presence Across London Boroughs & Surrey Towns
Our installation teams operate across all 32 London boroughs and the entire Surrey commuter belt. We maintain fast mobilisation times across key local service zones including:
- Croydon & South London: Croydon, Purley, Coulsdon, Shirley, Addington, Norbury, Thornton Heath, Mitcham, Streatham, Wimbledon
- Sutton & Bromley: Sutton, Cheam, Carshalton, Wallington, Bromley, Orpington, Beckenham, Chislehurst
- Surrey Commuter Belt: Reigate, Redhill, Epsom, Ewell, Banstead, Leatherhead, Dorking, Guildford, Woking, Weybridge
- Greater London Commercial Hubs: City of London, Canary Wharf, Southwark, Lambeth, Westminster, Kensington & Chelsea, Hammersmith
Building Control Coordination & Regulatory Compliance
All installation work by our window fitters complies with UK Building Regulations. We verify thermal performance under Document L, safety glazing under Document K (BS EN 12150), ventilation under Document F, and security under Document Q.
We coordinate directly with Local Authority Building Control (LABC) or approved private inspectors to arrange site verification and issue legal Building Control Completion Certificates for your property records. Read more on our building control inspections page.
Commercial Subcontracting for Main Contractors
For B2B main contractors and commercial developers, we provide flexible subcontract fitting under standard JCT terms. Our directly employed glazing fitters integrate with your site programme and report to your principal contractor. Every commercial project is backed by £5,000,000 public liability insurance and full CDM 2015 RAMS documentation.
Contact our commercial team to discuss labour-only glazier rates or supply-and-fit packages.
Frequently Asked Questions: Window Fitters & Installers
Are your window fitters and door installers directly employed?
Yes. 100% of our window fitters and door installers are directly employed by Window Fitters Ltd. We never use unvetted temporary agency labour. This guarantees consistent workmanship, full accountability, and the same fitters returning for any remedial work.
What credentials do your glazing fitters hold?
All team members hold valid CSCS cards (Blue, Gold, or Black level), pass the CITB Health, Safety and Environment Test, and carry full £5,000,000 public liability insurance. Senior fitters hold NVQ Level 3 in fenestration installation.
Do you provide RAMS documentation for commercial sites?
Yes. We prepare site-specific Risk Assessments and Method Statements (RAMS) under CDM 2015 for every commercial project. These are submitted to the principal contractor before our glazing fitters start work on site.
What areas do your window fitters cover?
We operate from Croydon and cover London, Surrey, and surrounding areas within a 40-mile radius. Our teams regularly work in Bromley, Sutton, Mitcham, Purley, Shirley, and the wider Surrey commuter belt.
Written & Technically Reviewed by Marian Gheorghe
Active Director & Head Window Fitter, Window Fitters Ltd
Marian brings over 15 years of hands-on fenestration, fire door certification, and commercial facade installation experience across Greater London and Surrey. He directly supervises all Window Fitters Ltd installation crews and ensures every window fitter and door installer meets strict trade standards and UK Building Regulations.
Author & Technical Reviewer: Marian Gheorghe
Head Installer & CEO, Window Fitters Ltd
Marian Gheorghe is the Active Director and Team Leader Installer at Window Fitters Ltd. With over 15 years of hands-on experience, he oversees technical safety and UK Building Regulations compliance for all residential and commercial glazing contracts.
Book a free site survey. No obligation, no pressure.
Window Fitters Ltd installs windows, doors, fire doors, and commercial glass facades across London and Surrey. Croydon head office, 40-mile service radius, 100% directly employed CSCS-carded fitters.
Our estimators respond within 24 business hours with a fixed-price quotation.
Verified Google & MyBuilder Reviews
"Stunning Sash Windows in Croydon"
"Marian and his team replaced our old Victorian sash windows. They were clean, fast, and the double glazing has completely blocked out the street noise. Highly recommended!"
"Excellent Bifold Doors in Bromley"
"Installed beautiful grey aluminium bifold doors for our new kitchen extension. Smooth gliding mechanism and great insulation. The best quote we got in Kent."
"Perfect Front Door Upgrade in Sutton"
"Very happy with our new composite door installation. Excellent lock security and high-quality GRP slab finish. Fast half-day fitting and no mess left behind."