Commercial High-Level Glazing in London
High-level glass replacement, glass roof leak repair, heritage glazing and emergency make-safe for London’s commercial buildings and live venues, delivered by our London team without defaulting to scaffold.
Commercial glaziers in London
ARRT Group is a commercial glazing and high-level access contractor with its registered office in Covent Garden. Our London team replaces glass at height, traces and repairs leaking glass roofs and atria, refurbishes curtain walling and makes damaged glazing safe on occupied buildings and live venues across London and the South East. We are commercial glaziers only. Call 020 3780 3001.
Glazing at height on buildings that stay open
Much of London’s commercial glass is difficult to reach: atria over trading floors, glass roofs over public spaces, curtain walling above busy pavements and heritage roofs on listed buildings. The building usually has to stay open while the work is done. We bring glazing and access together in one team, so the same people survey the defect, make it safe and complete the repair, with exclusion zones, protection and photographic records on every visit.
Proven in London: Alexandra Palace
Alexandra Palace is a Grade II listed London landmark and a live events venue. Over more than 10 years the ARRT team has delivered multiple projects there without routine scaffold shutdowns:
- External sealing to the three major glazed roofs
- Over 350 glass units changed, including 194 glass panes on one roof and 112 × 7mm Georgian wired glass panes on another
- 4 replacements on the rose stained-glass window
- Rope access to the heritage roof lantern on the glass dome, and a tracked spider boom lift on protected floors beneath a single glazed Victorian glass roof
Most recently, on 20 October 2026, we carried out an emergency make-safe of three roof ventilation louvres above the Great Hall that had seized open and were letting rainwater in. We were on site within 4 hours of the first call, reached the roof by rope access with no scaffolding, and stopped the leak in a single visit. See the Alexandra Palace hub for the full programme.
Commercial glazing services in London
- High-level glass replacement: failed, cracked and blown units replaced at height
- Glass replacement without scaffolding, by rope access, MEWP or tracked spider lift
- Glass roof leak repair on atria, rooflights, lanterns and sloped glass roofs
- Curtain wall refurbishment and gasket replacement
- Heritage glazing for Grade II glass roofs, domes and roof lanterns
- Rope access glazing for elevations, domes and glass roofs
- Emergency glazing make-safe for broken glass and live leaks
- Planned glazing maintenance and mastic and sealant replacement
Access methods
We choose the access that costs the client least and disrupts the building least. Scaffold is used only when it is genuinely the right answer, and we will explain why if it is.
- Rope access by IRATA-trained technicians, for elevations, domes and glass roofs with a minimal footprint. See rope access.
- MEWPs and tracked spider lifts, operated by IPAF-trained operatives, for atria, internal glazing and protected floors.
- Internal access and towers by PASMA-trained, CSCS-carded site teams.
Water coming in or glass broken?
Call 020 3780 3001. Our make-safe attendance target is within 4 hours of your call, subject to access and location; we will confirm timing for your site on the phone. On site, the first job is to make the area safe and stop further damage, then we agree the permanent repair. Our emergency glazing and glass leak repair pages explain what a make-safe involves.
How a London job runs
- Enquiry. Call 020 3780 3001 or use the short form with your site postcode.
- Survey. A close-quarters inspection with photographs, and the glazing system and access identified.
- Proposal. A written scope with the access method, programme and working hours.
- RAMS and mobilisation. Task-specific risk assessment and method statement, permits and exclusion zones.
- Delivery. Our own supervised team, with a temporary make-safe first where needed.
- Close-out. Before-and-after photographs and a note of anything else we saw at height.
Registered office
- Company: ARRT Group Ltd (Company No. 17091134)
- Address: 71-75 Shelton Street, Covent Garden, London WC2H 9JQ
- Phone: 020 3780 3001
- Email: info@arrtgroup.co.uk
- Hours: Mon–Fri 07:30–18:00, plus out-of-hours by arrangement
Our Midlands team works from Radcliffe-on-Trent, Nottingham; see commercial glaziers Nottingham and locations and coverage.
Questions we get asked
Do you have an office in London?
Yes. Our registered office is at 71-75 Shelton Street, Covent Garden, London WC2H 9JQ, and our London team works across Greater London and the South East. One number, 020 3780 3001, reaches the London and Nottingham teams.
Can you replace high-level glass in London without scaffolding?
Often, yes. We use rope access, MEWPs and tracked spider lifts wherever the building allows, and only recommend scaffold when it is genuinely the right answer for the job.
Do you work on listed buildings in London?
Yes. Our team has delivered multiple projects over more than 10 years at Alexandra Palace, a Grade II listed London landmark, including external sealing to the three major glazed roofs and over 350 glass units changed.
What should I do if glass is broken or water is coming in?
Call 020 3780 3001. Our make-safe attendance target is within 4 hours of your call, subject to access and location, and the first job on site is always to make the area safe and stop further damage.
Can the building stay open while you work?
In most cases, yes. We plan exclusion zones, protection and working hours around the building, so offices, shops and venues can keep operating.
Are you insured, and can you provide RAMS?
Yes. Public liability insurance is £10 million. Task-specific risk assessments and method statements are provided before work starts.
Need a make-safe in London?
Call 020 3780 3001 for leaks and broken glass, or send us the building, the defect and a photograph. We will tell you the access method, the likely scope and a realistic programme.