The glazing work is the straightforward half. Removing a failed unit from an atrium roof and fitting a new one is a trade skill, well understood, with established methods.
The difficult half is that the atrium is in use. There are people below, a building that can’t close, and a roof that needs working on from underneath or from above with no floor anywhere near it. Most of what makes atrium glazing specialist is the answer to that, not the glass.
Getting there at all
Four access methods cover nearly every atrium, and the building usually picks for you.
A building maintenance unit is the designed answer, where one exists: a cradle running on tracks, installed with the building. When it’s there and has been tested recently it’s almost always the right choice. The catch is how many have been left to seize, or were taken out during a refurbishment and never replaced.
Rope access suits tall atria with structure to rig from and no room for a machine on the floor. It’s fast to mobilise, it needs very little floor space, and the footprint below is small. It requires anchor points that someone has verified will take the load, which on a building without designed anchors means a structural assessment first.
Mobile elevating platforms are simple where the floor can take them. Scissor lifts and cherry pickers are familiar kit and nobody needs convincing. Floor loading decides it, and lobby slabs over car parks and plant rooms frequently can’t carry a machine at full extension. That’s a structural question, answered by a structural engineer, before anyone books a lift.
Scaffolding or a temporary deck is the heavy option, used when work needs a stable platform for a long period. Slow and expensive to erect, and it takes the floor out of use for the duration, which in a shopping centre or hotel lobby may cost more than the glazing does.
The Work at Height Regulations require the method to work through a hierarchy rather than go straight to fall protection, so the first question on any atrium is whether the work can be done from a permanent installation. Rope and platform come after that.
Rope access, and why it looks worse than it is
People watching a technician descend into an atrium on a rope tend to assume it’s the risky option. It generally isn’t, and the reason is the system rather than the operator.
Technicians working to IRATA procedures work in teams, never alone, with a supervisor on site. Each person is on two independent systems, a working line and a backup, so a single failure doesn’t become a fall. Rescue capability is on site before work starts, which means the team can recover a colleague themselves instead of waiting for anyone.
The equipment gets inspected on a documented schedule and anchor points are proof-loaded or verified before use. What makes a rope job safe is that structure. A platform with one person in it and a harness clipped to the basket is a less redundant arrangement than people assume.
Protecting the people underneath
This is where atrium work differs most from facade work, and it’s the part building owners should ask hardest about.
Glass and tools fall. The controls are physical rather than procedural: exclusion zones marked and barriered on the floor, a protection deck or netting where the zone can’t be kept clear, and a marshal whose only job is stopping people walking in. Not signage. Someone standing there.
Timing does a lot of the work. Hotel atria get worked at night, offices at weekends, retail outside trading hours, hospitals around clinic schedules. It costs more in labour and saves more in disruption, and it removes most of the exclusion zone problem by removing the people.
Dust, noise and smell matter in a space designed to be pleasant. Sealant and solvent odour travels a long way in a tall volume, and an atrium is also usually the acoustic heart of the building.
Then there’s the fire strategy, which people forget. If access equipment blocks an escape route or a smoke vent has to be isolated for the work, the building’s fire arrangements have changed for the duration and need a formal temporary variation. The same applies to any rated internal screen being disturbed, as covered in this piece on fire-rated notice boards and compliance, where certification depends on the assembly rather than its appearance.
What the building owner should ask for
A method statement written for that atrium, with the access method justified rather than asserted. The structural basis for the anchors or the floor loading. The rescue plan, named. Who’s marshalling the floor and when the work happens.
Contractors holding both the glazing trade and the access qualifications in-house, such as Sky Access, remove a handover that otherwise sits in the middle of the job, where the access company’s remit ends and the glazier’s begins.
The test for whether anyone has thought about it properly is the rescue plan. Ask what happens if a technician is injured at height over a live reception area. A clear answer means somebody has walked the job. A vague one means they’re planning to work it out on the day.
