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REGULAR SOLAR CONTROL WINDOW FILMS.

 All of us like plenty of light – but not too much! That's why we use sunglasses and install solar films on clear glass. And here is information WHY WE HAVE TO DO IT!

But - there are also some problems which are born regarding that.

GLARE

The problem: Too much sunlight hurts our eyes and makes it difficult to read, use our computers, or work in comfort.  Glare is either too much or intrusive light; glare is present as either direct glare or contrast glare.
Direct glare is simply too much light.  Contrast glare is where one part of the vision area is much brighter than another.  One important fact must be remembered: glare is light – it is impossible to alter glare without altering the light entering through the glazing.

 

The solution: Glare can be easily solved using modern, high performance, high durability window film.  These micro-thin, high technology products provide a wide range of options with a variety of properties to meet your particular needs.

Direct glare reduction with window film

There are hundreds of window films that reduce direct glare, from a ‘mirror’ finish to a more subtle appearance such as grey, bronze, copper, silver and neutral.  A good guide to deciding the type of window film you need is the Glare Reduction values that window film manufacturers provide for all their products.  Glare Reduction is simply the reduction in direct glare or the percentage reduction in visible light.  Use these solutions:

Problem	Glare Reduction solution
Glare from computer screen	90 % +
Severe eyestrain / headaches, impossible to read or write	90 % +
Painful eyestrain / headaches, difficulty in reading or writing	80 % +
Uncomfortable eyestrain, some difficulty in reading / writing	60 % +
Slightly uncomfortable	30 % +
Comfortable	No glare reduction needed

 

The most popular films provide a Glare Reduction of 60 % or more.  Some even offer Glare Reduction of more than 90 %.  And you need not worry about the film being too dark – one of the most popular types of film for glare reduction has a visible light transmission of 15 %, but sufficient visible light enters through the glazing to satisfy people inside the building – otherwise they would not buy these products.  Furthermore, the range of window film products available is so wide that you will be able find a product that balances out your need to reduce glare against your need for visible light.

Contrast glare reduction with window film

There are many window films available to reduce contrast glare, from an ‘acid etched’ finish to white, black, patterned and decorative effects.
All of these films work by diffusing the light, softening the edges of windows and shadows so that the change from very bright to less bright is gradual; the human eye is able to more easily adapt to the change from bright to darker.
Simply use the film that gives the appearance you want.

FADE

The problem: We love the sunlight, its colours, its warmth.  We take pride in the things we have worked hard for: our homes and the objects in them.  But the sun can damage furniture, carpets, works of art, paintwork, and wall coverings.

The solution: Whilst fading or damage can almost always be significantly reduced, it can never be stopped completely – ageing and colour changes of materials are facts of life. However, one particularly effective method of reducing fading / damage is to use modern, high performance, high durability window film. These micro-thin, high technology products provide a wide range of options with a variety of properties to meet your particular needs.

Causes of Fading

Solar energy consists of 3 % Ultra Violet (UV) light, 44 % Visible Light and 53 % Infra Red (IR) energy.  As a guideline, the different parts of solar energy contribute to fade as shown in Figure 1.

Although UV is only 3 % of solar energy reaching the earth, at 40 % it is the biggest cause of fade and damage; therefore it is most important to reduce UV to low levels.  But to obtain the best fade reduction possible, both visible light and Infra Red should also be reduced.

Fade reduction with window film

Many home owners desire solar/fade protection while maintaining natural light.  As a result, window film manufacturers can offer products that appear completely clear with > 99 % UV rejection.  Alternatively, products are available with an almost imperceptible tint that reject > 99 % UV and have much lower infra-red (heat-near IR) transmission.

Any window film for fade reduction should therefore have performance of:

 

• Less than 1 % UV transmission, preferably less than 0,1 % UV transmission
• As low visible light transmission as is acceptable for your home
• Less than 90 % direct solar transmission, preferably less than 75 % direct solar transmission (lower than 75 % is better still)

Finally, it is important to ensure that the selected film will continue to offer protection from fading and damage over a number of years.  Ensure that the selected film will filter UV to less than 1 % (preferably less than 0,1 %) for many years; normally this means that UV absorbers will be deep dyed into at least one layer of polyester film within the window film structure.  All good quality window film manufacturers offer suitable products.

 

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