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					                          Just Checkin’ LLC
                                Respond. Check. Report

                                Office: (949) 484-9069
                               1024 Bayside Drive, #399
                               Newport Beach, Ca 92660


Location:La Quinta, CA
Project: Window Film Discovery


Dear John Smith,
       Having researched the window film manufactures and the window films they
currently have on the market there are a few that I can suggest with the characteristics
that you require. The first manufacture is 3M and they have two series of window films
that fit the characteristics you are looking for: 1) Ceramic Series, 2) Prestige Series. The
second manufacture is Huper Optik and they have 2 series of window films that fit the
characteristics you are looking for: 1) Nano-Ceramic Series, 2) Select series. The third
manufacture is LLumar and they have 2 series of window films that fit the characteristics
you are looking for: 1) Neutral Series, 2) Dual Reflective Series.




       The best way to make a decision on what window film to choose is to look at
Total Solar Energy Rejected and Solar Heat Gain Coefficient. Here is a little more
information on the subject:


Total Solar Energy Rejected: is the percentage of incident solar energy rejected by a
glazing system which is equal to solar reflectance plus the part of solar absorption which
is re-radiated outward.


Solar Heat Gain Coefficient: The Solar Heat Gain Coefficient (SHGC) measures how
well a window blocks heat from sunlight. The SHGC is the fraction of the heat from the
sun that enters through a window. SHGC is expressed as a number between 0 and 1. The
lower a window's SHGC, the less solar heat it transmits.
                                   Huper Optik Huper Optik       3M             3M          LLumar Huper Optik Huper Optik
             Specs                 Select DREI Ceramic 30     Prestige 40    Ceramic 30    DR35SRC Ceramic 40 Select SECH
                                                                                              DF
Visible Light Transmission                35%          30%            39%           36%         36%        42%         59%
Visible Light Reflectance                 12%          11%            N/A           N/A          N/A        9%          8%
VIsible Light Reflected Interior          N/A          N/A             7%           15%         13%        N/A         N/A
Visible Light Reflected Exterior          N/A          N/A             7%           17%         19%        N/A         N/A
Shading Coefficient                       0.35         0.43           N/A           0.47         0.52      0.52        0.54
Solar Heat Gain Coefficient                0.3         0.37            0.4          0.41         0.44      0.45        0.46
Infrared Light Rejection                  98%          86%            97%           84%          N/A       80%         83%
UV Light Rejection                     99.90%        99.9%          99.9%           99%         99%      99.9%      99.90%
Total Solar Energy Rejected               70%          63%            60%           59%         56%        56%         54%
Glare Reduction                           61%          62%            55%           60%         60%        53%         34%
Total Solar Transmission                  17%          20%            N/A           N/A          N/A       29%         35%
Solar Heat Reduction                      N/A          N/A            N/A           50%         48%        N/A         N/A
U Value                                   N/A          N/A            0.99          1.02         0.93      N/A         N/A
On Angle                                  N/A          N/A            66%           N/A          N/A       N/A         N/A
Luminous Efficacy                         N/A          N/A               1          N/A          N/A       N/A         N/A
                                  LLumar     Huper Optik  3M         3M       Huper Optik
              Specs              N1040SRCD Ceramic 50 Prestige 70 Ceramic 50 Ceramic 60
                                     F
Visible Light Transmission              40%          52%      60%        53%         60%
Visible Light Reflectance               N/A          10%       N/A       N/A          9%
VIsible Light Reflected Interior        15%          N/A        9%       10%         N/A
Visible Light Reflected Exterior        18%          N/A        9%       12%         N/A
Shading Coefficient                     0.59         0.58      N/A       0.61        0.67
Solar Heat Gain Coefficient              0.5          0.5       0.5      0.53        0.58
Infrared Light Rejection                N/A          69%      97%        68%         60%
UV Light Rejection                      99%        99.9%   99.90%        99%       99.9%
Total Solar Energy Rejected             50%          50%      50%        47%         43%
Glare Reduction                         56%          45%      22%        40%         34%
Total Solar Transmission                N/A          38%       N/A       N/A         43%
Solar Heat Reduction                    41%          N/A       N/A       35%         N/A
U Value                                    1         N/A      0.99       1.03        N/A
On Angle                                N/A          N/A      59%        N/A         N/A
Luminous Efficacy                       N/A          N/A        1.4      N/A         N/A
Here are the Top 3 choices using Solar Heat Gain Coefficient as the determining factor:
   1. Huper Optik Select DREI        .3 Solar Heat Gain Coefficient
   2. Huper Optik Ceramic 30         .37 Solar Heat Gain Coefficient
   3. 3M Prestige 40                 .4 Solar Heat Gain Coefficient


Here are the Top 3 choices using Total Solar Heat Rejection as the determining factor:
   1. Huper Optik Select DREI        70% Total Solar Heat Rejection
   2. Huper Optik Ceramic 30         63% Total Solar Heat Rejection
   3. 3M Prestige 40         55% Total Solar Heat Rejection


3M Window Films
Ceramic Series Benefits:
   •   Natural Tone
   •   High heat rejection
   •   Low reflectivity
   •   Extends life of furnishings
   •   Non Metal technology eliminates corrosion
   •   Reduces glare
   •   Increases personal safety by minimizing flying glass


Prestige Series Benefits:
   •   Substantial Heat rejection provides energy savings
   •   Increased on angle heat rejection provides additional performance benefits
   •   Low reflection
   •   No metals
   •   Extends life of furnishings
   •   3m manufactures warranty
   •   Reduces glare
   •   Increases personal safety by minimizing flying glass
Huper Optik Window Films
Nano Ceramic Series Benefits:
   •   Cutting edge technology with maximum Heat Rejection
   •   Avoids demetalization or discoloration
   •   Increases comfort-cooler interior
   •   Reduces glare and fading to interior furnishings
   •   Saves energy
   •   Protects to sun related skin problems SPF>200
   •   Improves glass shatter resistance
   •   Enhances overall aesthetics with a soft neutral shade
Select Series Benefits:
   •   Avoids discoloration
   •   Increases comfort
   •   Reduces glare and fading of interior furnishings
   •   Saves energy
   •   Protects against sun related skin problems
   •   Improved glass shattering resistance


LLumar
Neutral Series Benefits:
   •   Reduces excessive heat gain for improved comfort
   •   Cuts glare to reduce eyestrain
   •   Rejects 99% of Ultraviolet radiation reducing fading of furnishings
   •   Durable scratch resistance coating for easy cleaning
   •   Reduction of hot spots increases HVAC efficiency and lowers energy costs
   •   Neutral color provides unobtrusive appearance
Dual Reflective Series:
   •   Reduces excessive heat gain for improved comfort
   •   Cuts glare to reduce eyestrain
   •   Rejects 99% of Ultraviolet radiation reducing fading of furnishings
   •   Durable scratch resistance coating for easy cleaning
   •   Reduction of hot spots increases HVAC efficiency and lowers energy costs
   •   Improves building aesthetics with a warm neutral appearance
Dealers:
Campbell Window Film
   •   3m
   •   Location: Huntington Beach, CA
   •   Phone: 800-580-9997
   •   Web: campbellfilm.com
Solar Art
   •   Huper Optik
   •   Location: Laguna Hills, CA
   •   Phone: 949-830-1897
   •   Web: solarart.com
Mikes Tint Shop
   •   LLumar
   •   Orange, CA
   •   Phone: 714-997-8468
   •   Web: mikestintshop.com
Window Film Information:
Window Film and Thermal Fracture
If window film is going to have any bearing on glass breakage, it will occur within the
first 2 seasonal cycles (or 2 years from installation date). If the glass has come through
the 2-year 'cycle' without cracking then another reason must be considered (e.g. structural
settling, impact, tension stress, existing but out of sight cracks or edge weak points).


Check the crack formation...


You can determine whether the glass edge was damaged prior to breakage to aid in
discussing the problem.


First, thermal stress fractures can be identified by the fact that, at their origin, they
propagate at 90-degree angles to the glass edge and to the two glass surfaces.
In addition, the fracture line always runs straight from the edge for 1-2 inches before
beginning to propagate across the window or dividing into two or more fracture lines.
Unfortunately, unless the broken pane of glass is removed from the window, you will not
be able to see the edge of the glass. However, the other details given above can help you
determine if the breakage is possibly thermal stress related.
In addition to the above characteristics, thermal stress fractures always originate along
the middle 1/2 to 3/4 of a side, away from the corners. Thermal stress fractures always
originate from the glass edge, never in a radial pattern as with breakage caused by impact
from an object. Therefore, if you find broken panes as shown here in Figures 2 and 3, the
fractures are not caused by thermal stress.
Only fractures that have all three previously discussed characteristics of thermal breaks
should be investigated further. Again, these characteristics are:


Fracture begins on the middle 1/2 to 3/4 of pane edge, not near a corner.
Fracture is at a 90-degree angle to edge of glass, straight out from frame (and to both
surfaces of glass, but this can only be identified by removing glass from window).
Fracture runs at a 90-degree angle from the glass edge for 1-2 inches before propagating
further or branching.
If a fracture has the above three fingerprints and is probably caused by thermal stress, the
fracture involved should be looked at further to determine if the glass had been weakened
by edge defects prior to film installation.
If the glass pane is substantially weakened by edge defects, a true thermal stress fracture
will only meander partially across the window. If the edge defect only partially weakens
the glass then a single fracture will completely cross the window. However, if the glass is
of good quality with no edge defects, and is broken by thermal stress, see the attached
image. In each of these circumstances, the fracture origin can start on any edge of the
pane, but away from corners.


In the first two diagrams in the following posts glass breakage occurred, but only because
the glass was damaged. Depending on the degree of edge damage, the glass could have
fractured from any window retrofit causing an increase in glass temperature (adding close
fitting blinds or curtains for instance). Only in the third diagram do you see where a pane
of glass has broken from application of a solar control film that absorbs more heat than
good quality glass can withstand.


More times than not homeowners are not informed of close fitting window dressings
impact in aiding thermal stress... when film is applied, drapes and blinds should remain
open during sunshine hours to reduce a radiator effect from being produced. This happens
because there is reduced air circulation immediately adjacent to the film/glass surface,
which would keep the glass surface cooler.


Thermal stress on annealed glass can occur with temperature differentials of 40 degrees
F. between pane center and pane edge.


Thermal stress break pattern "less than normal strength" annealed glass


...Thermal stress break pattern "much less than normal strength" annealed glass


...Thermal stress break pattern "normal strength" annealed glass


found this EDGE DEFECT on the last FLAT job I did. found it as I was cleaning the
glass, I stopped and took pictures for evidence. notified the owner of the defect and he
said TINT IT ANYWAYS.


this is the kind of hidden stuff we deal with as tinters. glass shops want to blame us for
their crappy installs if the glass breaks. bad thing is sometimes these defects are behind
the gasket where you can’t see them. cheep glass and faulty glass install are behind the
majority of this stuff this was a brand new building.


Wow, thanks for the info. My cracks actually happened during the first summer after
installation. On one window, there is a clear two inch 90 degree line before it curves. The
other two windows have multiple cracks all from the same place (they have been getting
worse as this dispute has been going on for a year). The windows are a quality brand in a
very expensive house (over $2mil).


The windows do not open and have been in place for over nine years, they withstood a
vicious hailstorm that almost tore off our roof and siding, so, I think they are good
windows (Marvin). We never got a warranty card, only a bill. We were told they were
guaranteed. We were never told the guarantee would not be sufficient to cover the cost of
the windows due to their size. Is there a professional organization I could contact for a
list of standards? Thanks.


The other two windows have multiple cracks all from the same place (they have been
getting worse as this dispute has been going on for a year).


These smack of poor glass edge quality since thermal stress cracks will display a single
1-2 inch long crack, exactly perpendicular to the edge, before meandering off in other
directions.


The film adds thermal stress, yes, but if the glass edge is poor quality cut it will crack
from the weak point, installed film or not... film adding heat absorption only brings out
the edge flaw issue more quickly than if the glass were left untinted.


If it's been 2 years since the install, chances of additional pane breakage decrease over
time. You may have been much better off with the next lighter in the film in the series.


Yes indeed... and many who are now aware of this incident are placing their bets...


Clients been on a merry-go-round for a year... chances are pretty good it won't stop until
he ponies up from his own resources. Sad, but I have seen this before and not with just
one film name...
Many film makers cover glass breakage on a limited basis (usually $500 per window)...
only a minority of film manu's are involved in dealer interactions concerning specific and
careful use of film that is to be installed on different glass size shapes and densities...




One that I know of actually has film to glass recommendation charts available to every
purchaser of their product, as well as an extensive technical service department that can
augment this chart with verbal telecom confirmation for any project greater than 2500 sq
ft (and certainly for those who are unsure of any given situation).


Maybe the other bidder on your project had this available to him or her... I do not know.


Good installing contractors do inspect the glass, however, cannot see the mistakes made
by the glazer when the glass or window was installed. Those that do would certainly
point out any defects that present a challenge to them installing film and some go to the
extent of reducing risk through encouraging the client to compromise on performance for
a safer install... or ask that the window in question be repaired before going forward with
the install.


Is this dual pane or single pane, does the glass have any shadowing on its surface anytime
during the day, close fitting window dressing suffocating the glass surface from cooling
through air movement, compass direction (East being the most vulnerable), altitude
above sea level... all are considerations important to film selection.


One thing I have learned about window film is that one cannot always deliver what the
consumer expects in performance without risk or compromise of sort.


I am unaware of any other manu's with cases in litigation over glass breakage issues.


I do hope the best for all involved in your scenario... and would most certainly have the
window glass edge inspected through frame removal. It is essential to know the film is
not always the culprit, though glass and window makers will speak to the contrary.
- Information above from http://www.tintdude.com/thermal-fracture.html
Heat and Temperature –What is the Difference?
When we measure temperature we are measuring the intensity of molecular motion. If
you were to measure the temperature of the flame created by a lighter versus the flames
of a forest fire they would be similar, however, the forest fire would generate much more
heat than the lighter. Heat is a unit of energy. So even though the temperature of the
flames are the same the far greater volume of mass of a forest burning will result in much
more energy (heat) being produced.




The energy that makes up the solar spectrum is divided into three areas, Ultraviolet
Radiation, Visible Light, and Infrared. Their intensities vary depending on their
wavelength size and each one accounts for varying percentages of heat as indicated in the
following diagram. (Note: See Updated Understanding of Energy Distribution.)




As you can see 53% of the sun’s energy comes to us in the Infrared Spectrum, 44% from
the Visible Light Spectrum, and 3% from the Ultra Violet Spectrum. All of these three
areas make up what is known as the Solar Spectrum and their combined energy is what
we are referring too when we use the term “Total Solar Energy.” Window Films act as a
filter reducing varying percentages of each part of the Solar Spectrum. Darker films will
filter out more visible light resulting in energy reduction whereas lighter films have to
filter out more infrared in order to reject large amounts of energy. Films can be designed
to work on either one part of the Solar Spectrum or all three. Clearly then when we read
the specification called “Total Solar Energy Rejection”, we can now see that it is not
referring to temperature reduction percentage, but rather, it is the percentage of incident
solar energy rejected. The Total Solar Energy (TSER) specification along with another
specification that is commonly used in the glass industry called the “Solar Heat Gain
Coefficient” (SHGC) are two excellent ways for a consumer to compare the performance
of one window film to another.
Window films alone cannot lower the temperature of a room but they can reduce the rate
that energy enters a room which helps reduce the load placed air conditioning systems.
The greater the glass area, the greater the impact window film can have on heat transfer
into or out of a room. This makes window films an essential component to creating a
more energy efficient building or home.
* http://windowfilmonline.wordpress.com/2008/07/01/total-solar-energy-
%E2%80%93what-you-need-to-understand/

				
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