Rope access · 2 working days
Heritage roof glazing works
Specialist high-level glazing maintenance on a traditional metal-framed roof lantern — preservation and weatherproofing, reached by rope access.
Case study
Alexandra Palace, a Grade II listed London landmark — high-level glazing & difficult access
Named commercial high-level glazing and difficult-access works at Alexandra Palace, a Grade II listed London landmark and live events venue — multiple projects over 10 years under the ARRT team, not the limited-company age.
Cited claim — Alexandra Palace high-level works
ARRT Group has delivered multiple projects over 10 years at Alexandra Palace, a live events venue, without routine scaffold shutdowns. Works have included external sealing to single glazed Victorian heritage glass roofs; over 350 glass units changed across the programme — including 194 glass panes replaced on one roof and 112 × 7mm Georgian wired glass panes replaced on another — and 4 replacements on the rose stained-glass window. Rope and spider access methods are documented in the named jobs below. That 10-year figure is works history at the venue — ARRT Group Ltd (Companies House 17091134) is the current commercial vehicle, incorporated 2026-03-13.
The challenge
Alexandra Palace, a Grade II listed London landmark, is a live events venue. Its single glazed Victorian heritage glass roofs are high-level, difficult-access work. Works had to land without scaffold shutdowns that would close public space or derail the programme.
Method
Rope access and powered access were selected so the building could stay open. Under a single glazed Victorian heritage glass roof, spider / powered access reached the barrel-vaulted Georgian wired glass ceiling without a scaffold shutdown. Exclusion, protection and photographic evidence were built into every visit. The same access-led approach covers external roof sealing and glass unit replacement at height across the programme.
Works delivered
- External sealing to three major glazed roofs
- Over 350 glass units changed across the Alexandra Palace programme
- One roof: 194 glass panes replaced
- Another roof: 112 × 7mm Georgian wired glass panes replaced
- 4 replacements on the rose stained-glass window
- Commercial glass replacement at height
- Façade and rope-access cleaning
- Decorating at height
- Commercial roof repairs
Close-out
Photographic records before, during and after every job — the same standard we apply across commercial and FM instructions.
Alexandra Palace glazing — questions answered
What glazing work has ARRT Group done at Alexandra Palace?
Multiple projects over 10 years on the live Grade II venue: external sealing to the three major glazed roofs; over 350 glass units changed, including 194 glass panes replaced on one roof and 112 × 7mm Georgian wired glass panes replaced on another; and 4 replacements on the rose stained-glass window.
How is high-level glazing done while the venue stays open?
Rope access and spider / powered access are selected instead of routine scaffold shutdowns, with exclusion zones, protection and photographic records on every visit. The named jobs show both methods: rope access to the heritage roof lantern on the glass dome, and a tracked spider boom lift on protected floors under a single glazed Victorian heritage glass roof.
What is Georgian wired glass?
Glass with a square steel wire mesh set into the pane, common on older glazed roofs and roof lights. On one roof, ARRT Group replaced 112 × 7mm Georgian wired glass panes.
Do you take on other listed buildings and live venues?
Yes. The same high-level glazing, external roof sealing and glass unit replacement at height is offered for listed buildings, live venues and occupied commercial buildings across London and the South East, with UK-wide programmes. See heritage glazing and atrium & rooflight glazing.
Related capability: high-level fabric on live venues is also supported by our drone building surveys — aerial façade and roof condition photography that feeds the same inspection and access-led repair offer. Listed-building and historic glass at height: heritage glazing London.
Heritage roof lantern (rope access)
single glazed Victorian heritage glass roof spider access
Emergency leak repair & roof vent make safe
Heritage glazing & listed building glass
High-level glass replacement
Façade cleaning
Commercial roof repairs
Rope access
Atrium & rooflight glazing
Drone building surveys
Named jobs
Three named jobs at Alexandra Palace
Alongside the multi-year Alexandra Palace programme (roof sealing, 350+ glass units including 194 panes on one roof and 112 × 7mm Georgian wired panes on another, and rose window works): a two-day heritage roof-lantern rope-access job, a one-day single glazed Victorian heritage glass roof spider-access visit, and a single-visit emergency make safe of the Great Hall roof ventilation louvres.
Spider access · 1 working day
High-level glazed roof access
Tracked spider boom lift under a single glazed Victorian heritage glass roof for safe access to the upper roof structure and internal glazing perimeter, without extensive scaffolding.
Emergency · rope access · 1 visit
Emergency roof vent make safe
Emergency make safe of three roof ventilation louvres above the Great Hall — on site within 4 hours, seized mechanisms freed by rope access, and the leak stopped in a single visit without scaffolding.
Next step
Need a specialist on site?
Send us the building, the defect and a photograph if you have one. We will tell you the access method, the likely scope and a realistic programme.