Application
Architecture and glass
Anti-soiling glass that keeps its optics
The situation
External glazing, curtain wall panels, balustrades and interior glass where soiling, fingerprints and graffiti are the maintenance cost. The glass is usually installed, so the coating has to be either applied in the factory or cured without an oven.
What fails today
- Anti-soiling films that work on a new pane fail once the glass is washed with an alkaline detergent.
- Thick films on glass show interference colour and lose transmission.
- A coating that needs a primer adds a second failure surface on a facade nobody can service.
- Graffiti release that depends on a sacrificial layer wears through and has to be reapplied in place.
Grades for this duty
SF-CB0031
The hard one: 8–9H and an 85–90 % ceramic yield for glass
SF-RC001
Aminosilane-modified, 7–8H, wipes on and cures in air
SF-RC150
Low viscosity, room-temperature cure, 110° contact angle
SF-SC002
Slow cure and a long open time, 7–8H at the end
SF-SC150
Longer open time, the same 107° surface
How to apply it
Glass and glazed ceramic can be coated directly; the film is thin and does not change the optics.
Clean to a water-break-free surface before coating; the material will not level on a contaminated pane.
Cure as the grade requires; on installed glass, a heat-cured grade only works if the panel can come out.
Mask edges and frames: the film is harder than the gasket around it.
How to qualify it
- Contact angle and roll-off angle to ASTM D7334, before and after cleaning cycles.
- Adhesion after water immersion and after an ageing cycle.
- Haze and light transmission before and after coating: a film that changes the optics is the wrong film.
- Cleaning cycles with the detergent the building actually uses.
Bring your substrate and your target; we quote a grade and a cure schedule against it.
Next step