Review Film Performance Comparison - VLT over 20% up to 25%

All the films, except for the Johnson Nightscape 25 and Solar Gard Night Sky 20, are neutral shaded films designed to preserve a natural view out of a window and are constructed using the latest sputter coating or electron beam coating technologies. The Nightscape 25 and Night Sky 20 are dual reflective films designed to reduce internal reflection, particularly at night. All the films are made in the USA and all but one are WERS Energy Rated (See Note 7 below), and similar performance data - all the films block 99% UV and block about 60% of the heat. The other difference between the films is in the external appearance - the Night Vision 25, Daylight Natural 20 and N1020 Neutral are more reflective than the Nightscape 25, Ambiance 25 and Quantum 20 as shown by the Visible light reflected (VLR) albeit, a black reflection rather than silver mirrored reflection.

WHAT TO BUY?

• Best for heat - Dual reflective film: ASWF Sky 20 blocks 70% of the heat but has a highly reflective External VLR of 33% and internal reflectivity of 16%
• Heat and Light Balanced -Neutral film: Smart Films Ambiance 25 blocks 61% of the heat.
• Good heat reduction and low reflection - Neutral film: Solar Gard Quantum 20 is the least reflective (VLR 8%) and blocks 59% of the heat

COMPANY

FILM

ASWF
Nature 20

Smart Films
Ambiance 25

Johnson Window Films
Nightscape NS25

Solar Gard
Night Sky 20

Johnson Window Films
Daylight Natural DN20

Solar Gard
Quantum QSQ 20

MEP Films Llumar
N1020 Neutral

3M
Night Vision 25

WERS rated

Yes

Yes

No

Yes

No

Yes

Yes

Yes

VLT %

24%

24%

28%

20%

22%

22%

24%

24%

VLR %

28%

14%

16%

13%

26%

8%

28%

19%

% TSER (Heat)

65%

61%

51%

57%

61%

59%

63%

61%

SHGC

0.33

0.39

na

0.40

na

0.40

0.35

0.37

% UV blocked

99%

99%

99%

99%

99%

99%

>98%

99%

Film Price $M²

$50.60

$53.90

$55.00

$60.50

$61.60

$75.90

$68

$66

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NOTES: The performance data shown above is taken from data published on each company website and published company literature. The data is presented to assist consumers for comparison purposes only. The data and trademarks remain the property of their owners.

1. WERS – Window Energy Rating Scheme – Film performance data has been independently tested and verified as true (no point in comparing performance if the data for a film has not been confirmed to be true)
2. VLT – Visible Light Transmitted (less than 20% VLT will make a room “feel” darker)
3. VLR - Visible Light Reflectance (a measure of how “shiny” or “mirrored” the window appears – clear glass has a VLR of about 8%. As VLR increased above 8% the window appears more reflective
4. TSER – Total Solar Energy Rejected (indicates the films heat rejecting ability – more is better to reduce heat)
5. SHGC – Solar Heat Gain Coefficient (a value ranging from 1.00 to 0.00 showing the solar heat that is transmitted through the glass – lower is better)
6. UV – Ultra Violet light (the major cause of sun damage and fading – more blocked is better to reduce fading)
7. U value - a measure of how effective a material is as an insulator. The lower the U-value, the better.