Solar Control

In addition to the reflecting and blocking nature of laminated and tinted laminated glass, Finn Lamex offers a Solar Control PVB lamination foil to absorb sunlight energy and further increase comfort in the cabin. This further reduces energy consumption used by the air conditioner, for example.

Solar Control for comfort

In general, a tinted laminated windscreen is better for the cabin comfort and a Solar Controlled windscreen increases the comfort even more by reducing the light energy coming through the windscreen. This is why a clear glass, although it may seem the obvious choice, may not always be the best option.

“Customers often want clear glass with Solar Control, but even with Solar Control it’s worth using tinted glass. This provides both the benefits of tinted glass, and the light energy absorbing properties of Solar Control lamination foil. The combined benefit of the two is greater.  A tinted glass is only slightly tinted concerning windscreens. A tinted windscreen is almost unnoticeable after installation and appears as clear.”

Aleksi Hannukoski
A comparison of transmission values between different combinations of windscreen glass colour and laminated film.

Reducing solar energy in cabins also protect the long-term health of drivers, as well as their day-to-day work capacity.

UV transmission values across visible wavelengths with different combinations of glass colour and PVB coating. Green glass + Solar Control film provides the best result.

Laminated glass windscreens consist of three layers: an inner-facing layer, an outer-facing layer, and a middle PVB interlayer. A standard, clear PVB interlayer film can be used, which filters most of the ultraviolet (UV) light itself – or it can be enhanced with protective properties to block infrared rays (IR) and the total solar energy transmitted through the windscreen.

S-LEC™ Film, developed by Sekisui and commonly known as Solar Control, provides this solution: a PVB interlayer that blocks solar energy and IR light while maintaining visible light transfer of 70% or above. This results in better heat blocking and reduces the sensation of burning or irritation of the skin, for example.

Better sun protection increases comfort and reduces risk

The light spectrum is made up of UV light, visible rays, and IR, existing on a scale that ranges from 0 to 2500 nanometres (nm). Infrared rays from 1450-1900 nm stimulate the nerves on the skin, and so are responsible for the sensation of heat.

Solar Control Film cuts down on the infrared rays from 1500-2100 nm that result in an uncomfortable feeling on the skin.

Practically, this increases comfort within the vehicle. Both the driver and passengers experience a 5-7 °C reduction in the perceived ambient temperature – and the driver’s risk of suffering harmful skin effects, which accumulate while driving, is also reduced. The same goes for vehicle components like the steering wheel and dashboard, protecting your vehicle investment over time.

Cooling on the move

The Solar Control PVB interlayer also provides a cooling effect while driving, outperforming metal-based coatings in reducing the amount of heat generated inside a vehicle at highway speeds. Solar Control Film absorbs wind to cool accumulated heat in the glass – so the faster the vehicle moves, the greater the cooling effect. This is important on long trips for your bus fleet or motorhome range.

Solar Control film cuts down on the infrared rays from 1500-2100 NM that result in an uncomfortable feeling on the skin.

Solar Control saves energy

Using Solar Control saves about 20% (or 0.11 kWh) of energy consumption by the air conditioning system in 60 minutes of driving. This translates to an increase of 4.6km in driving range. This effect is even greater in buses and motorhomes, making Solar Control a popular choice for electric vehicle manufacturers, for example, to save energy.

Greater connectivity

Metallic windscreen films cause electromagnetic interference (EMI), which negatively impacts the use of internet-connected devices. On the other hand, Solar Control film allows free transmission of electromagnetic waves. This means that the connectivity of cell phones and other internet-connected devices – as well as proximity-based road tolls and parking spaces – used in your drivers’ line of work will be unaffected.

At Finn Lamex, we offer S-LEC Solar Control Film L. The best protection is provided by a combined solution of green or grey-tinted glass with an added Solar Control interlayer, which we offer in all our windscreens.

Are you interested in the increased comfort, connectivity, safety and efficiency of Solar Control? Don’t hesitate to contact us for a customised windscreen solution for your business.

Learn more about Solar Control:

What is Solar Control – and why should you use it in your windscreens?