How often should curtain wall maintenance be scheduled?
Curtain wall maintenance should be scheduled at intervals based on the building’s exposure, usage, system age, manufacturer guidance and any previous inspection findings. Additional checks may be appropriate after severe weather, building works or reported faults, so developing a planned schedule helps identify deterioration before it becomes more disruptive or costly.
A documented curtain wall maintenance review should normally be arranged at least annually, with the frequency adjusted where the building’s condition, occupancy or risk profile requires closer attention. The schedule should distinguish between routine observations, planned maintenance and more detailed inspections, rather than treating every visit as the same type of assessment.
For many commercial properties, an annual review provides a practical opportunity to assess visible elements and identify changes before they develop into more disruptive defects. This review should consider the condition of glazing, frames, seals, gaskets, caps, pressure plates, flashings, drainage paths and accessible fixings. It should also record signs such as cracked or misted glass, failed seals, corrosion, staining, movement, loose components or water ingress.
More frequent checks may be appropriate where the curtain wall is exposed to heavy traffic, pollution, strong weather, high internal humidity or demanding operational conditions. Buildings with public access, sensitive internal areas or a history of recurring leaks may also need a closer maintenance regime. In these circumstances, the schedule should be based on the consequences of failure as well as the physical condition of the system.
A detailed inspection should be considered when a routine review identifies deterioration that cannot be assessed safely or accurately from ground level. This may involve examining hard-to-reach areas, checking drainage and seals more closely, reviewing isolated leaks and determining whether movement or damage is affecting the wider curtain wall assembly. The appropriate scope depends on the system design and the findings recorded during earlier visits.
Maintenance should also be brought forward when there is evidence of a developing defect. Water ingress, draughts, condensation between panes, damaged glass, staining around joints, unusual movement or a change in the appearance of seals should not be left until the next planned visit. Prompt investigation can help establish whether the issue is localised or indicates a broader problem with the curtain wall.
The schedule should be reviewed after alterations to the building or nearby works that could affect the façade. Changes to internal layouts, ventilation, heating, external access equipment or adjacent construction can alter how the curtain wall performs and may justify an additional inspection. Any recommendations from earlier maintenance should also be used to refine the timing and scope of future work.
Each visit should produce a clear record showing the areas examined, defects found, photographs where useful, immediate risks and recommended actions. This creates a maintenance history that allows building managers to monitor recurring issues, plan budgets and demonstrate that concerns have been considered responsibly. Findings should be prioritised according to safety, water penetration, potential damage to the building and the likelihood of further deterioration.
There is no single interval that is suitable for every curtain wall. A risk-based programme, reviewed against the condition of the installation and the requirements of current building and safety regulations, is more appropriate than relying solely on a fixed calendar date. Glass Plus UK can assess the condition of commercial curtain walling and advise on a proportionate maintenance or repair programme.
A curtain wall maintenance schedule should have a clearly identified person responsible for arranging inspections and following up recommendations. This may be a facilities manager, property manager or building owner, depending on the organisation’s responsibilities.
Assigning ownership helps prevent planned reviews from being overlooked when staff, tenants or contractors change. It also ensures that unresolved items are carried forward and that the next inspection is arranged with the relevant building information available.
