In cities with heavy traffic and sea air such as Istanbul, glass facades are typically cleaned once or twice a year and other cladding every one to two years. Buildings on main roads, near construction sites or facing the sea need shorter intervals.
Facade cleaning is not only about appearance. Accumulated soiling acts as an abrasive that shortens the life of the cladding.
What shortens the interval
- Traffic density: oily exhaust deposits bond to glass and panel and are not washed off by rain.
- Sea air: salt accelerates corrosion in metalwork and joints.
- Nearby construction: dust and cement splatter leave permanent staining quickly.
- Trees and birds: resin and droppings cause both staining and erosion.
- Facade orientation: elevations facing the prevailing wind soil faster.
The cost of postponing
On a long-neglected facade the soiling bonds chemically to the surface. Beyond that point cleaning takes longer, needs stronger products, and in some cases leaves a permanent mark on the cladding. With acidic contamination such as pigeon droppings, the cladding itself is damaged.
Regular maintenance is therefore not an expense but a saving that defers the cost of recladding.
A note for building managements
The healthiest approach is to place facade cleaning in the annual budget as a fixed item. Working with the same contractor regularly means the history of the facade is known, problem areas are tracked and small defects are spotted before they grow — so the cleaning doubles as a routine facade inspection.
Frequently asked questions
How often should a glass facade be cleaned?
In cities with heavy traffic and sea air such as Istanbul, typically once or twice a year. Buildings on main roads or facing the sea need shorter intervals.
Is postponing facade cleaning harmful?
Yes. On a neglected facade soiling bonds chemically to the surface, cleaning becomes harder and permanent marking is possible. Acidic contamination such as pigeon droppings damages the cladding itself.