Review Film Performance Comparison - External Solar Neutral

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The three neutral grey external films are made in the USA, are WERS Energy Rated, and allow 13% to 24% of the visible light to pass through the films, block 99% UV and block between 63% and 73% of the heat.

WHAT TO BUY?

Best Buy: Solar Gard Sentinel Plus Stainless Steel 15 OSW has the highest heat performance (73% of the heat blocked) and a VLR of 40%.

  

COMPANY/FILM

Johnson Window Films

DN20 EXTERNAL

Solar Gard

Sentinel Plus St/Steel 25 OSW

Solar Gard

Sentinel Plus St/Steel 15 OSW

  

WERS rated

Yes

Yes

Yes

  

VLT %

22%

24%

13%

  

VLR %

26%

28%

40%

  

% TSER (Heat)

63%

63%

73%

  

SHGC

0.46

0.42

0.31

  

% UV blocked

99%

99%

99%

  

Film Price $M2

$61.60

$71.50

$71.50

  

On-Line Job costing - measure your own windows -Save 15% sales commission

  
 

You pay

$52.36

You pay

$60.78

You pay

$60.78

  
 

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 – Sikar 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.