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Energy Efficient Glass

Glass Supply for Windows, Doors and More
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Glass with High Energy Performance

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Energy efficient glass is one of the ways that homeowners can take advantage of to save on their energy costs. Hence, it also helps to keep a room warmer and requires less energy to maintain the optimal temperature.

Our double glazed units are energy efficient through 3 major features.

Pilkington K glass is a type of low emissivity (low-E) coated glass designed to improve energy efficiency. It features a special pyrolytic coating applied during the glass manufacturing process, which helps retain heat while allowing sunlight to pass through. This special coating reduces heat loss by reflecting heat back into the room.

Pilkington K is commonly used in windows to enhance thermal insulation, reduce energy bills, and improve comfort. It is manufactured by the major glazing company called Pilkington.

Thermal or warm edges in glass units refer to the use of thermally efficient spacers between the panes of double windows. Unlike traditional aluminum spacers, these are made from materials like stainless steel, plastic, or foam, which have lower thermal conductivity. By creating a thermal barrier, warm edge technology reduces heat transfer between the panes. As a result, it helps maintain a warmer internal glass surface, enhancing comfort and reducing energy costs.

Argon gas in double glazing units is an inert gas which we fill between the glass panes to enhance insulation. It’s denser than air, reducing heat transfer and improving thermal efficiency. This results in better energy performance, reduced heat loss, and lower energy bills. As a bonus, argon also minimises condensation and noise, making windows more comfortable and efficient for homes and buildings.

Cold Spots Explained

An added advantage of our efficient glass units is the reduction of cold spots. So, what are cold spots? Do you know the moment when you go towards your window in winter and it gets colder as you get closer? That cooler area is referred to as the window cold spot.

Compared to standard double glazing, the distance from the glass to the where a cold spot begins is much shorter with our energy efficient units. This means that more of your room can be warmer and comfortable.

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Low Emissivity Glazing

Pilkington K glass is essentially low emissivity glazing. It plays a major part in reflecting heat in the room to improve energy efficiency. It features a microscopically thin, transparent coating applied to one side of the glass, but it still can allow visible light to pass through.

Low emissivity glass diagram

Fortunately, in Summer it also reflect certain sun rays. The advantage is cooler areas on the other side of the window. Consequently, the reduction of UV rays minimises fading of furniture and fabrics. You certainly get many benefits with installing our energy efficient glass units.

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FAQs

Having efficient glass units certainly makes the energy U value lower. It can earn an A rating for your window when combined with other strong factors.

Yes, our energy efficient glass units can reduce condensation. With our above 3 features, it is designed to enhance thermal insulation. By reducing heat transfer, the inner glass pane stays warmer, decreasing the likelihood of condensation forming on its surface.

Traditional windows are colder, causing moisture from indoor air to condense more easily when it comes into contact with them. Thus, energy efficient windows maintain a higher indoor glass temperature, lowering the risk of condensation, improving comfort, and preventing issues like mould growth and water damage.

Yes, replacing old glass units with the energy efficient version is worth it. These units in the window, featuring low-E coatings, argon gas and warm edge spacers, significantly reduce heat loss, lower energy bills, and improve indoor comfort.

Additionally, they minimise condensation, reduce noise, and protect furnishings from UV damage. Though the initial investment can be a little higher, the long term savings on energy costs and increased property value make it a smart, cost effective upgrade.

There are companies that offer energy saving grants for your windows. The criteria for application is limited and usually applies to those with old single glazed windows or have an EPC rating of D or below.

If you feel that you could benefit from an energy saving grant, you could check your eligibility with the government’s website help. 

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