Control and solar protection film for glazing
Reduction of solar heat gain - Improvement of thermal comfort
Control of excessive solar heat gain to avoid overheating
Applying a solar control and protection film to glass walls helps control excessive solar heat gain in summer for better control of ambient temperatures and reduced air conditioning costs.
The solar film applied to the glass stops the heat before it enters the room and without « radiator effect » by radiation of heat within the building. Designed to achieve the best performances in terms of rejection of total solar energy, solar films for glazing retain maximum brightness while preserving the panorama.
Solar control and protection films act primarily on infrared radiation (the main cause of heat). This selectivity of the electromagnetic spectrum considerably improves the performance of the glass. Thus, a solar control and protection film allows the control of excessive solar heat gain in order to reduce the use of air conditioning systems for substantial energy savings.
With far superior performance to other solar protection systems,
the application of a solar control film is the most economical choice
to control excessive solar heat gain through glass walls.
Find solar control and protection films for glazing
Understand the heat
Heat is a phenomenon mainly related to three types of wavelengths namely infrared (IR), visible light and ultraviolet (UV). Although it is a high-energy radiation, UV does not really generate heat.
The challenge in designing solar control films is to be able to act selectively on the different wavelengths in order to obtain the best performance. Thus, the priority is the filtration of IR whose wavelengths are those that provide the most heat.
To this end, the Lumen solar film range provides high filtration of infrared rays while preserving high light transmission in order to maintain maximum brightness within a room.
For highly exposed glazing with excessive solar heat input, light filtration in addition to IR allows a significant reduction in temperature with a corresponding reduction in brightness. This is implemented by the Ilios solar film range
Selective spectrum filtration technologies provide good solar protection while preserving the entry of natural light through the glazing.
But light also brings heat, so the choice of a solar film remains above all a compromise.
Reduction of excessive solar heat gain in summer
Solar g-factor
Accumulation of solar energy transmitted through the glazing equipped with film, with the solar energy absorbed and then re-emitted towards the interior of the building.
The lower the value, the better the athermal value of the glazing equipped with a film.
Solar control and protection films are designed to effectively reduce excessive solar energy gain through glass walls while maintaining visibility to the outside and maximum light input.
These solar protection systems act at the glazing level, therefore before heat enters the room. Other interior-mounted blackout systems such as slatted blinds or Venetian blinds give the illusion of stopping the heat at T0min, but from T+30min they radiate the heat they accumulate towards the inside of the room, causing heating within the building.
By their design, solar control and protection films applied to glazing do not generate a radiator effect in order to control the ambient temperature and avoid overheating.
Comparison of solar g factor values on 4 types of solar protection films for glazing compared to 4mm or 4/16/4 clear glass.
This graph shows that a protective or solar control film offers a real gain in the fight against excessive heat gain through glazing. In addition, a clear non-reflective film such as lumen 70 EX allows a significant reduction in temperature while maintaining maximum brightness.
Reduction of solar heating
Shading coefficient
Measurement of the ratio between the transmission of solar energy passing through glazing equipped with a film and the transmission of solar energy passing through clear glazing without film.
The lower the coefficient value, the better the shading value of the glazing equipped with a film.
A glass wall lit by the sun lets a very large amount of energy pass through. This solar energy heats the ambient air of a room but also causes a very significant rise in temperature of objects especially when directly hit by the sun's rays. Heat is a harmful element to the proper functioning of electrical devices or machines containing electronic components.
The use of solar control and protection films is a very effective way to protect machines against solar heat. Window films protect against a rise in temperature by direct action of the sun but also prevent a significant increase in the ambient temperature.
A decrease in heat does not necessarily mean a decrease in brightness. As the graph below shows, professional quality clear solar control window films are quite capable of effectively reducing heat.
Comparative graph of the reduction in heating on 4 types of solar protection films for windows compared to 4mm or 4/16/4 clear glass.
The increase in temperature of objects can be controlled by action on infrared radiation. Thus clear solar control films are able to effectively reduce heating for better control of the ambient temperature or the protection of heat-sensitive machines.
Glare reduction
Glare
Amount of light transmitted by the glazing/film system relative to the tolerance threshold of the human eye.
The higher the value, the greater the glare reduction.
Excessive brightness in offices or at home is one of the main factors of visual fatigue. Glare for several hours causes exhaustion that leads to careless mistakes and the efforts of the eyes to reduce the discomfort cause significant headaches at the end of the day.
Whether metallized or not, solar control and protection films are designed to polarize light. This phenomenon reduces glare and improves the sharpness of the view through the glazing equipped with a solar film. In cases where the brightness is much too high, a film with a percentage of visible light transmission adapted to the context is selected to solve the problem.
Comparison of glare reduction values on 4 types of solar protection films for windows compared to a clear glass 4mm or 4/16/4.
This graph shows that solar films for windows provide a real gain in reducing glare. In addition, the lumen 70 EX film which is a clear reference still allows a 25% reduction in glare thus offering better visual comfort without excessive loss of brightness.
Understanding Fading
An integral part of the electromagnetic spectrum, ultraviolet rays are high-energy rays which, in high doses, degrade organic molecules and certain synthetic compounds.
Every day we are exposed to UV-A and UV-B rays in cloudy or clear weather. These rays mainly contribute to the discoloration of objects, the aging of leather, the fading of fabrics or other tapestries. Although they are in the majority, ultraviolet rays are helped by heat and light in the premature aging of objects.
UV reduction greater than 99%, infrared rejection and light filtration; Solar protection films for windows are perfectly suited to reduce the risks of discoloration or premature aging of objects.
Window films specifically anti-UV
UV Derma Vigil
Equipped with only an anti-ultraviolet coating, this window film filters more than 99.99% of UV rays.
Clear, untinted and non-reflective, this film will become virtually invisible once applied to glazing.
Absorber IR 90
Based on nano-ceramic technology, this type of window film has the ability to absorb part of the IR in addition to filtering the UV.
Clear, untinted and non-reflective, this adhesive window film will remain discreet for maximum protection against the effects of fading.
The use of this type of anti-UV films is recommended for people prone to skin disorders related to ultraviolet radiation. In the professional context, offices, shopping centers, national education establishments, administrations, homes or simply in a vehicle, these anti-UV films help many people in their daily lives.
Particular case
Renovation of « Antelio » type solar glazing
Antelio glass is a glazing with total solar energy rejection properties. Unfortunately, exposed to bad weather, the metallization deteriorates over the years and the materials oxidize. Antelio glazing then becomes dull and black marks appear on the outer face of the glazing. The solar energy rejection performance decreases and the aesthetics of the building deteriorates.
The replacement of Antelio glazing can be considered but the cost would reach a level that is far too high. In addition, the work would disrupt the activities of the company or the residents of the building for several weeks.
A possible option for the renovation of Antelio glass is the application of solar protection film for glazing. Thus, the Antelio glazing equipped with a film will achieve solar performance equivalent to or even superior to its original state but it will also regain a more aesthetic appearance.
The application of a solar control and protection film offers installation costs much lower than replacing glazing and the impact on activities within a building will be very low.
