Solar control glazing: everything you need to know

What is solar control glazing ?

Solar control glazing is a type of technical glazing that regulates solar energy thanks to
a thin layer of metal oxides applied to one side of the glass.
With its ability to reflect up to 80% of solar radiation, this innovative double glazing
significantly reduces solar gain while ensuring bright and pleasant spaces.
With exceptional light transmission and enhanced thermal insulation,
our solar control glazing is perfectly suited to the needs of modern buildings,
whether residential or commercial.
This technology enables :

In summer: Limit heat gain, thereby reducing the need for air conditioning.
In winter: Maximise the greenhouse effect to retain heat inside.

VIT SUN PERFORM glazing acts as a smart solution, transforming your windows and bay windows into true allies for thermal and energy comfort.

Contrôle solaire - Mobile

What are the advantages of solar control glazing ?

Solar control glazing is an ideal solution for combining thermal comfort and energy efficiency in your spaces. Designed to limit the effects of heat while maximising natural light, it allows you to enjoy a pleasant interior in all seasons. Discover the main advantages of this technology below.
Effective solar control
Reduction in heat gain of up to 84%.
Bright comfort
Abundant natural light without glare.
Optimal thermal insulation
Reduction of heat loss in winter.
Energy saving
Less air conditioning and heating required.
Modern aesthetics
Glass in various shades with subtle reflections.

How to choose the right sunscreen ?

Depending on the building’s orientation and the needs of its occupants, solar control may vary from one glazing to another.

Selectivity of solar control glazing :
a key criterion for indoor comfort

Selectivity (Se) is the ratio between light transmission (LT) and the solar factor (g).
It is used to assess a glazing’s ability to let natural light through while limiting heat gain.
When selectivity is greater than two, the glazing lets in more than twice as much light as heat.
The solar factor (g) is the ratio between solar gain (Sg) and heat gain (Hg).

VIT Sun Perform 71/39

Selectivity : 1,82.
This means that this glazing lets in 1.82 times more light than heat.

Combined with a 16 mm argon gas gap, VIT Sun Perform 71/39 glazing offers comfort
in both summer and winter (known as “four seasons”). It offers a light transmission/solar factor ratio of 1.84 depending on the application (facades/skylights) and exposure, while providing high thermal insulation.

 

Glazing Light transmittance External reflection Solar factor Ug value (air) Ug value (argon)
4 PERFORM
71/39 – 16 -4
72% 13% 39% 1.3
W/m²·K
1.0
W/m²·K

VIT Sun Perform 66/33

Selectivity : 2.
This means that this glazing lets in twice as much light as
heat.

Combined with a 16 mm argon layer, Sun Perform 66/33 is similar to VIT Sun Perform
71/39, but offers better solar control with only slightly lower light transmission.
In fact, the light transmission/solar factor ratio is equal to 2 for these glazing types.

 

Glazing Light transmittance External reflection Solar factor Ug value (air) Ug value (argon)
6 PERFORM
66/33 – 16 -4
66% 16% 36% 1.3
W/m²·K
1.0
W/m²·K

VIT Sun Perform 60/28

Selectivity : 2,14.
Glazing lets in 2.14 times more light than heat.

Combined with a 16 mm argon gas gap, this glazing offers a very high level of thermal insulation. It is the most selective product in our range, with a light transmission/solar factor ratio of 2.14.

 

Glazing Light transmittance External reflection Solar factor Ug value (air) Ug value (argon)
6 PERFORM
60/28 – 16 -4
60% 12% 28% 1.3
W/m²·K
1.0
W/m²·K

VIT Sun Perform 50/30

Selectivity : 1,67.
Glazing lets in 1.67 times more light than heat.

Combined with a 16 mm argon layer, Sun Perform 50/30 provides effective solar control
without darkening the interior of the building too much. Its more neutral appearance
sets it apart from Sun Perform 60/28. In addition, it can be tempered to 6 mm, which
helps to address thermal break issues, particularly in roofing.
Its light transmission/solar factor ratio is 1.85.

 

Glazing Light transmittance External reflection Solar factor Ug value (air) Ug value (argon)
6 PERFORM
50/30 – 16 -4
50% 19% 27% 1.4
W/m²·K
1.0
W/m²·K

VIT Sun Perform 30/16

Selectivity : 1,88.
The glazing lets in 1.88 times more light than heat.

Combined with a 16 mm argon layer, Sun Perform with a selectivity of 30/16 is the most efficient product in the range, with a solar factor of only 16% (in other words: 84% of solar energy remains outside the building), it is also the least luminous. It is therefore reserved for facades that are extremely exposed to the sun, or more often for roof glazing, as zenithal exposure allows the use of less luminous products. Its light transmission/solar factor ratio is 1.87.

 

Glazing Light transmittance External reflection Solar factor Ug value (argon)
6 PERFORM 30/16
16 Argon – 4
30% 25% 18% 1.0
W/m²·K

Applications of solar control glazing

Facades

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Windows
& doors

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Veranda

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Glass roof

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Compatibility

Acoustic
Burglar-proof
Anti-glare
Self-cleaning
Heated
Fire-resistant
Flame-retardant
Opacifying
Bulletproof
Reflective
Blackout blind
Integrated blind
Low-emissivity
Sandblasted glazing

Optimise your comfort all year round
with solar control glazing

Reduce the impact of UV rays and manage heat efficiently,
while enjoying natural light.

FAQ : your questions about solar control glazing

Can solar control glazing be used in residential buildings ?

Yes, VIT SUN PERFORM glazing is perfectly suited to detached houses, conservatories and bay windows.

Are these glazing systems compatible with other technologies ?

Absolutely. They can be integrated into double or triple glazing for enhanced thermal and acoustic insulation.

Which model should you choose for a glass roof ?

For highly exposed roofs, VIT Sun Perform 30/16 is the most suitable thanks to its
very low solar factor.

How should these windows be maintained ?

Normal cleaning with non-abrasive detergents is sufficient. Avoid acidic or chlorine-based products.

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