EX - Neutral sputtered dark
EX - Umbra 20
- Category : Solar
- Type : Low reflection
- Shades : Tinted
- % Light transmission : 22%
- % Light reflection - outside : 26%
- % Total solar energy rejected : 66%
Demonstration Video
Action on the infrared spectrum -- umbra 20 EX
IR rejection test under controlled environment
The infrared lamp (75W) heats two steel plates connected to a thermometer, the whole being placed behind a glass plate (4mm).
The adhesive film presented on this page is stuck on the right side.
Actual test duration: 30 min
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Data sheet
| Simple glazing clear glass 4mm | Double glazing clear glass 4/16/4mm | |
|---|---|---|
| Optical property | Low reflection | |
| Shades (out/in) | Tinted | |
| Face of application on glazing | Outside | |
| Adhesive type | HPRA | |
| % Light Transmission | 22 | 21 |
| % Glare reduction | 75 | 75 |
| % Light reflection (out/in) | 26/30 | 30/30 |
| Emissivity value | 0.86 | |
| Winter value U (W/m²°K) | 5.71 | 2.69 |
| Value of solar g factor | 0.34 | 0.24 |
| Shading coefficient | 0.39 | 0.28 |
| % Transmission of solar energy | 20 | 18 |
| % Reflection of solar energy | 24 | 28 |
| % Absorption of solar energy | 56 | 54 |
| % Total solar energy rejected | 66 | 76 |
| % UV Transmission | < 1 | |
| Colour Rendering Index | 99 | 98 |
| Film thickness (µm) | 90 | |
| Limited warranty (years) | 10 | |
Compatibility on glazing
| umbra 20 EX PRT HPRA | |
|---|---|
| - Preapproved | - Recommended study | - Not approved | |
| Single glazing Clear or tinted |
|
| Double glazing Clear or tinted |
|
| Double glazing Clear Low-E #2 |
|
| Double glazing Clear Low-E #3 |
|
umbra 20 EX PRT HPRA
Data sheet
| Type of medium | Glass |
| Application on glazing | Exterior |
| Adhesive type | HPRA |
| Optical property | Low reflective |
| Visibility | Transparent |
| Glare problem | Average |
| Heat problem in summer | Average (+6°C) |
| Thermal insulation in winter | No - Not necessary |
| Solar heat gain in winter | No - Not necessary |
| Limit fading | UV + IR + Light |