Neutral sputtered medium
Umbra 40
- Category : Solar
- Type : Not reflective
- Shades : Tinted
- % Light transmission : 39%
- % Light reflection - outside : 18%
- % Total solar energy rejected : 53%
Demonstration Video
Action on the infrared spectrum -- umbra 40 IN
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 | Not reflective | |
| Shades (out/in) | Tinted | |
| Face of application on glazing | Inside | |
| Adhesive type | CDA | |
| % Light Transmission | 39 | 36 |
| % Glare reduction | 57 | 56 |
| % Light reflection (out/in) | 18/15 | 23/16 |
| Emissivity value | 0.88 | |
| Winter value U (W/m²°K) | 6.00 | 2.73 |
| Value of solar g factor | 0.47 | 0.60 |
| Shading coefficient | 0.54 | 0.68 |
| % Transmission of solar energy | 35 | 31 |
| % Reflection of solar energy | 16 | 20 |
| % Absorption of solar energy | 49 | 49 |
| % Total solar energy rejected | 53 | 40 |
| % UV Transmission | < 1 | |
| Colour Rendering Index | 99 | 98 |
| Film thickness (µm) | 50 | |
| Limited warranty (years) | 10 | |
Compatibility on glazing
| umbra 40 IN NRT CDA | |
|---|---|
| - 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 40 IN NRT CDA
Data sheet
| Type of medium | Glass |
| Application on glazing | Interior |
| Adhesive type | CDA |
| Optical property | Not reflective |
| Visibility | Transparent |
| Glare problem | Average |
| Heat problem in summer | Low (+4°C) |
| Thermal insulation in winter | No - Not necessary |
| Solar heat gain in winter | Yes - Keep |
| Limit fading | UV + IR + Light |