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ORAGUARD® HelioSilver 20 Ext.
Reflective Solar Protection Film

ORAGUARD® HelioSilver 20 ext is an aluminum-sputtered, highly reflective solar control film designed for exterior installation. By reflecting a very high percentage of solar radiation, it minimizes heat gain inside buildings and significantly reduces the heating of the glass. The mirror-like finish also provides effective glare protection and privacy during the day. Ideal for glass surfaces exposed to intense sunlight in office, residential, and commercial buildings.
  • Maximum energy efficiency – Significantly reduces cooling energy requirements in air-conditioned buildings through high total solar energy rejection (TSER)
  • Reliable UV protection – Blocks over 99% of UV rays to help prevent interior trim and furnishings from fading
  • Minimal Absorption – The films’ low heat absorption minimizes thermal stress on the glazing and increases its durability

Product information

Technical properties

Resistance

Durability 10 Year(s) Outdoor use, provided it is properly installed, maintained, and used | Vertical application
6 Year(s) Outdoor use, provided it is properly installed, maintained, and used | Horizontal Application
Shelf Life 3 Year(s) In original packaging, at 20 °C and 50% relative humidity
Temperature resistance Minimum temperature: -40 °C
Maximum temperature: 85 °C

Adhesive properties

Adhesive Permanent
Processing
Suitable substrate Glass
Application temperature Minimum temperature: 10 °C
Maximum temperature: 30 °C
Proposed application technology Wet application
Product Construction
Liner PET film, single-side silicone coated
Front material Thickness front material: 0.0625 mm
Front material: PET film

General

Thickness 62.5 um Average value; (excluding liner and adhesive)
Dimensions
Format Roll
Standard width 914 mm
1219 mm
1524 mm
1829 mm
Standard length 30.5 m
Technical specifications of the solar control film in accordance with EN 410:2011¹
ORAGUARD® HelioSilver 20 EXT Single glazing 4 mm clear glass Double glazing 4/12/4 mm clear glass
No Film With HelioSilver 20 EXT No Film With HelioSilver 20 EXT
Visible Light Transmitted [%] 91 26 83 24
Visible Light Reflected interior [%] 8 45 15 –
Visible Light Reflected exterior [%] 8 48 15 48
UV Block (280-380 nm) [%] 28 99 42 99
Total Solar Energy Reflected² [%] 8 50 14 50
Total Solar Energy Transmitted² [%] 87 19 77 17
Total Solar Energy Absorbed² [%] 5 31 10 33
Glare Reduction [%] 0 0.71 0 0.71
Shading Coefficient [-] 1.00 0.3 1.00 0.22
Infrared energy rejection (IRER)⁴ (780-2500 nm) [%] 13 – 22 –
G-Value (SHGC)⁵ [-] 0.88 0.26 0.80 0.19
Total Solar Energy Rejection (TSER)²˒⁸ [%] 12 74 20 81
Color Rendering Index⁷ [-] 99 88 99 87

1 Performance values were determined based on measurements conducted at Fraunhofer ISE, accredited ccording to ISO 17025:2015. Optical properties were calculated according to EN 410:2011 using the Optics 6.0 software from LBNL. All values are based on application to 1 mm clear glass and may be subject to minor variations due to standard manufacturing tolerances.

2 Calculated from transmission, reflection and absorption

3 Korrigierte Emissivität gemäß EN 12898:2019

4 Nach ISO 9050:2003

5 Solar Heat Gain Coefficient

7 In Transmission gemäß EN 410:2011

8 TSER (Total Solar Energy Rejection), basierend auf dem g-Wert gemäß EN 410:2011

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Technical documents

 

Our safety data sheets / product information consider the state of the SVHC list of 2026-02-04.

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