PRODUCT · HEAT SHIELD COATING
Heat out. Light in.
Transparent nano-glass coating that blocks solar heat and UV while keeping the light — cutting the energy bill.
- ~90% UV blocked
- ~70% NIR rejection
- 85.1% visible light
- 10+ years
WHAT IT IS
Invisible solar protection for existing glass.
HardoLass HSC is a nano-glass coating applied directly onto existing glazing, with no building work and no change to the look of the building.
It blocks ~90% of UV radiation and ~70% of near infrared (NIR) while keeping 85.1% of visible light: more thermal comfort and lower air-conditioning costs, with the same brightness.
TECHNICAL DATA
Data sheet
| Dry thickness | 1–6 µm |
|---|---|
| Consumption | 20–40 mL/m² |
| Visible light transmission | 85.1% (τV 83.1%) |
| Solar transmission | 70.5% (τe 65.99% · ~34% of solar energy not transmitted) |
| UV blocked | ~90% (τUV 9.87%) |
| Infrared (NIR) rejection | ~70% |
| Heat transfer coefficient | 6.0 W/m²K |
| Durability | 10+ years |
| Drying | 24 h in summer · 2–3 days in winter |
| Tested to | UNE EN 410 |
ENERGY EFFICIENCY
Estimated savings in a modelled building
In a ~2,300 m² glazed building in a high solar radiation area of southern Spain, estimated savings range from ~410,000 to 650,000 kWh/year, ~€98,000–160,000/year and 160–250 t CO₂/year (conservative–realistic scenarios). In testing, a reduction of up to 7 °C was measured in the thermal load of the glass.
Indicative estimates; they depend on the building, the glazing and its use.
SECTORS
Where it delivers most
Buildings & glass façades
Hospitality & hospitals
Rail & transport
How much could your building save?
Request a study with the data of your glazed surface.