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Solar Control Glass: Heat Reflective -Gujarat Guardian Glass

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Solar control glass

Let natural light in, while reflecting the sun's heat

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Excess heat and glare caused by the solar energy from the sun can be a major source of discomfort in some indoor environments, especially those with glass roofs, glazed facades, conservatories or with large areas of glazing. Solar control glass is ideal for helping to maximize natural daylight while reflecting a high proportion of solar radiation away from the glass, contributing to keeping the indoor space bright but cool.

What are the benefits of solar control glass?

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Solar control

Summer months can be very hot, which means keeping the inside of a building comfortable while allowing natural daylight in can be a challenge. The special properties of solar control glass let natural daylight in, while reflecting a high proportion of the sun’s heat. The indoor space remains bright but cooler compared to uncoated glass.

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Thermal insulation

In terms of thermal insulation performance, most of our solar control glass products - those with at least one silver coating, help reflect indoor heat back into the room and form a shield against the cold exterior. Used in double or triple glazing, they help reduce energy costs associated with indoor heating systems.

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Energy saving

The energy efficiency of buildings can be improved as solar control glass helps limit the overheating of interiors through the glazing, therefore helping to reduce demands on air conditioning.

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Glare reduction

Solar control glass can help mitigate glare from the sun and increase the visual comfort of building occupants, particularly if a glazed façade is directly exposed to the sun and with a high window-to-wall ratio.

Our solar control product range:

Guardian float glass

Guardian SunGuard®

Our Guardian SunGuard glass products offer different levels of solar control and light transmission, and various aesthetic options to suit many applications.

Let natural daylight in, while reflecting a high proportion of the sun's heat

Solar reflecting coating

Solar control performance is achieved through the use of a very thin, transparent, and permanent coating that helps limit the solar energy entering inside. It helps control solar gain to various levels depending on the coating while allowing natural daylight in and views on the outside. See more about how glass is coated.

How is solar control measured? Solar Heat Gain or ‘g’ value

The Solar Heat Gain Coefficient (SHGC), which is a measure of a window’s ability to transmit solar energy into a room, is measured in values from 0 to 1. The SHGC is commonly referred to as the g-value, or solar factor. The lower a window’s g-value, the greater its ability to insulate against solar heat build up.

Light to Solar Heat Gain (LSHG) or selectivity

The term “Light to Solar Heat Gain”, or “spectral selectivity” is used to address the amount of light transmission relative to solar energy blockage. Greater spectral selectivity is achieved when more visible light, and less overall solar energy, is transmitted.

Insulated glass unit (IGU)

Solar control is typically used in a double or triple insulating glass unit (IGU), which allows the energy efficiency of the windows to be further improved and helping to make building occupants feel more comfortable. The number 2 surface placement of a solar control coating often facilitates the best solar control performance because it partially reflects away incoming solar energy before it can enter the glazing. Some of our products can also be used for monolithic applications due to the durability of their coating.

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Aesthetics: a variety of colors and levels of reflectivity

Our solar control glass is applied on clear float glass and has a neutral aspect, allowing more natural, truer views through the glass. However, if you wish, solar control glass can also be colored. Our solar control coatings can be applied on tinted glass to further help mitigate glare and solar heat gain. Tinted glass colors can range from blue to grey with different contrasts. Solar control glass can also have different levels of reflectivity to provide transparency or a more reflective, almost mirrored glass effect, as well as a changing appearance during the day, to meet your aesthetic needs.

Specifying solar control glass to help meet project needs

There are many products available to choose from. As well as a wide range of aesthetic options, solar control glass can have various levels of energy performance and light transmission. Depending on the climate and the orientation of the building and its surroundings, carefully selecting the glass in the early stages of the project can help optimize the impact of the glazing on the overall energy performance of the building. Guardian™ Glass for BIM (Building Information Modeling) is an Autodesk Revit application for selecting and specifying Guardian Glass products. The software provides key performance metrics (passive solar heat gain, natural daylight, thermal) for all glass types. 

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Want to know more about glass and its properties?

Guardian™ Glass offers you a wealth of technical notes, tools and online learning to enhance your knowledge about glass and help you specify the most appropriate glass for your project. Discover our BIM resources and specification tools on the Resource Hub!

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Applications and uses of solar control glass

The applications for solar control glass are wide-ranging. From windows, facades and curtain walls to roofs and skylights, in fact, any application where glazing is a physical barrier between the inside and outside of a building, solar control glazing can be considered.

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Curtain walls

A curtain wall is a non-structural outer covering of a building that can be made of glass. Using solar control glass in a curtain wall can help designers control the performance and appearance of the glazing, including solar protection and thermal insulation.

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Roofs and skylights

Overhead glazing such as roof glazing can help reduce the need for artificial lighting, as well as provide a natural source of daylight to help brighten and open up the interior spaces of a building. Solar control glass can help address both solar protection and thermal insulation needs.

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Curved glazing

Solar control glass solutions have been developed that withstand the bending process without affecting the visual appearance of the glass. These solutions open up new design possibilities while still providing the required solar and thermal performance to contribute to the energy efficiency of the building.

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Oversized glazing

Oversized solar control glass provides opportunities for designers to create unique, striking designs. Using large panels of solar control glass can help minimize the use of structural elements, while creating a seamless façade that allows more natural daylight into buildings and provides spectacular views for occupants to enjoy.

Some of our eye-catching projects made possible thanks to Guardian solar control glass

Combining solar control glass with other glass types in an insulated glass unit?

Solar control glass can be combined in an IGU with thermal insulating glass to further improve the thermal insulation performance and help keep temperatures comfortable for the building’s occupants all year round. It can also be combined with laminated glass to provide safety and security features, as well as sound reduction.

Our solar control product solutions : 

Need to compare the performance of our products? Visit our product section to search, compare and filter through our wide range of glass solutions

  • SunGuard® eXtraSelective

    SunGuard® eXtraSelective

    SunGuard® eXtraSelective is our latest commercial range of triple silver solar control glass with world-class selectivity, which means it delivers an optimum ratio of natural light transmission to solar energy control.

    See more
  • SunGuard® SuperNeutral

    SunGuard® SuperNeutral

    SunGuard® SuperNeutral™ is our commercial range of double silver coated glass, ideal for those seeking high-performance with a highly neutral aesthetic. Its superb natural light transmission, solar protection and thermal insulation make it ideal for a wide range of applications.

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  • SunGuard® High Performance

    SunGuard® High Performance

    SunGuard® High Performance glass not only offers high solar control but also design flexibility and good levels of thermal insulation. Request products sample!

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Whether you're drawing skyscrapers, remodeling homes or designing a new project, our team of glass experts is ready to help you find the right glass for your project.