Why Is Double Glazing Glass Important?

Double glazing glass is a very important aspect of the performance of your double glazing. This is why it is important to understand what the glass can help you accomplish. You may think that glass is glass is glass. However, choosing the right kind of glass can help you get the most out of it. Moreover, you get to choose what features you want in your home and double glazing.

double glazing glass affects the performance of your home

What Are the Different Types of Double Glazing Glass?

There are many different kinds of double glazing glass. Each has its own speciality. However, you can take a core functionality and add on others to it. It depends on what you want to be the most important feature.

Annealed or Float Glass

Annealed or float glass is your basic double glazing glass. This is the cheapest option, and does not have any additional properties. It is quite strong and difficult to break, especially when used in double glazed fittings. However, when it does break, it breaks into dangerous shards. These can cause serious injuries.

Toughened or Tempered Glass

This type of glass is about 3 to 4 times tougher than float glass. Moreover, if it breaks, it shatters into crystals rather than shards. These cubes or ‘dice’ are much less dangerous than the jagged shards. This is you toughen it. First, you heat the glass to a high temperature, around 700°C. Then, you cool it by blasting it with cold air on both sides.

As a result, the outer layers of the glass cool down much more rapidly that its core. They contract and solidify, giving the sheet a much higher strength than normal. The catch is, because of its safety features and specialised manufacturing process, this is more expensive than float glass.

Laminated Glass (for safety and security)

Laminated glass adds a layer of security to your double glazing. You take two or more layers of glass. Then, you fuse them together with cast resin or PVB (polyvinyl butyal) laminate. The PVB option is much more secure, and the most commonly used. The way it works is if the glass ever breaks, it remains stuck to the laminate.

As a result, there are no dangerous shards. Moreover, if someone was trying to break in, the glass obstruction still holds its shape.

Coated Glass

Coated glass is ideal for those who want natural light, but would prefer to have it controlled. The glass has a metallic or tinted coating. As a result, it lets in sunlight after filtering it. This way, you get illumination without the glare or excess radiation. This not only protects your upholstery and carpets from fading, but also helps prevents skin damage from ultraviolet radiation.

tinted or coated double glazing glass keeps out excess radiation

Self-Cleaning Glass

Self-cleaning glass works in two ways, due to two treatments. First, a layer of titanium dioxide on the outside helps break down dirt. It does this with the help of solar radiation and the moisture around it. When solar radiation strikes the treated surface, it reacts with moisture to form hydroxyl radicals. These radicals take large particles of dirt and break them down.

The second is a hydrophilic treatment. As a result of this, any water droplets that fall on the glass tend to stick and spread. This washes off the broken down dirt. It also prevents water stains on this double glazing glass.

Noise Reduction Glass (Acoustic Glass)

Noise reduction glass is great if you live in an area that is very noisy. It could be due to a busy road or proximity to an airport. While ordinary double glazing glass can reduce sound by up to 75%, acoustic glass does even better. This glass has acoustic inter-layers of PVB. These absorb sound so that very little of it makes its way inside. To make it even more effective, you can use layers of different thickness.

Fire Protection Glass

If double glazing glass breaks during a fire, it can allow the blaze to spread. Moreover, it can cause additional injury with shrapnel. Fire protection glass is the ideal solution. This glass can withstand high temperatures, and you can decide how much time you need. You can get fire protection glass that holds of fire for 30, 60, 90, 120, and even 180 minutes!

Bullet-Resistant or Explosion Resistant Glass

These are two types of specialised double glazing glass. They are stronger and more durable, and built to withstand bigger impacts and shock-waves. These, and anti-vandalism and manual-attack-resistant glass, are heat treated and laminated. You should opt for these if you live in a high-risk area.

Decoration Glass

Decorative double glazing glass comes in many different colours, textures, and designs. These may be created by silvering, acid-etching, tinting, or even ceramic paints. Such glass is useful for adding visual interest, but is not ideal for areas where you would want visibility.

decorative double glazing glass adds visual interest

What Are the Different Features I Can Get With Double Glazing Glass?

Like we said earlier, double glazing glass can give you one or more features that you may desire. For example, you might want heat performance as well as easy to clean glass. Alternatively, you might desire less glare and less noise, but also strength. Whatever combination you want, you will probably find it. Double glazing glass can be exceedingly versatile and high-functioning.

Here are some of the features you can get with specialised double glazing glass.

Heat Performance

insulated double glazing glass gives you better thermal efficiency

Heat performance is an important aspect of double glazing. In fact, it is so essential that Building Regulations have specifications for it. As per the regulations, any new double glazing needs to adhere to guidelines for energy efficiency. Windows Energy Ratings measure the performance of your double glazing on a scale of A to G. In this scale, A is the highest performance rating. A low-E window will have low U-values and high g-value.

Low-E, or low emission glass is treated to maximise your heating. It lets in solar (or passive) heat, but reflects the interior heat back. As a result, it prevents a great deal of heat from escaping.

The thermal performance of your double glazing glass is measured by its U-value and solar heat gain coefficient (g value). U-value is the measure of how much heat the double glazing glass transfers out. If you get glass with a low U-value, it will let out less heat.

The solar heat gain coefficient measures how much solar heat your double glazing allows in. A high solar value, or g-value, means your double glazing transmits more solar heat inside.

One way to achieve low-E double glazing glass is by building up microscopic layers coating. A technology known as sputtering is performed in a vacuum. This builds a coating that is extremely thin yet very resistant. In fact, this treatment gives you clearer glass than any other thermal insulation process. Moreover, it gives you better thermal retention than any other process as well.

The best part is, you can get thermally efficient glass in various combinations. This includes toughened, laminated or noise-proof. You can even have decorative or self-cleaning glass.

Noise Performance

If you live in a city, or a built up area, you must face the problem of too much noise. There may be too much traffic going past because you live near a busy road. You may have a school or playground near you where children might be too loud. Even worse, your home may be close to a flight path or a train line. In such a case, you would want your double glazing glass to effectively and efficiently block out noise.

Acoustic glass is highly effective at keeping out such sounds. What’s more, you can use this double glazing glass on conservatory roofs as well. As a result, you get a clear roof that is not excessively loud when it rains. Additionally, you can use it as a noise-proof partition. This is ideal for quiet meeting rooms in a busy office. It also helps you create a tranquil den in your own home.

You can control the levels of noise protection with the thickness of the layers of this bonded double glazing glass. As sound travels through the layers and inter-layers, it keeps getting absorbed. The number of layers as well as their individual thickness help create a calmer space inside for you.

Easy Maintenance

Heat Loss

Let’s face it. It can be quite time-consuming to maintain the double glazing in your home. The doors and windows need to be cleared of debris. Moreover, cleaning the glass is a chore. This is why self-cleaning glass is so handy. The titanium dioxide coating on its surface reacts with moisture in the presence of solar radiation. This reaction creates hydroxyl radicals.

These radicals then bind with dirt particles and break them apart. These disintegrated particles get blown off or washed with rain. As a result, you don’t have dirt accumulating on your double glazing glass.

Moreover, another treatment makes this glass exceedingly hydrophilic. Hydrophilic is a fancy way of saying water-loving. As a result, when a drop of water lands on the surface of this glass, it does not clump. The drop spreads out over the surface of the glass. This means that even a small amount of water effectively spreads all over the pane. Consequently, it washes off any dirt particles that are still on the surface.

Additionally, you don’t have drops of water sitting on the double glazing glass. This way, you are less likely to get stains due to deposits. Your double glazing glass remains clean and dirt-free with little to no intervention from you. Even if it does get dirty once in a while, you can clean it with just a wet rag.

Protective Glass

Your double glazing glass can protect you from a range of safety issues. This category of protective glass is called safety glass. It keeps you safe from lacerations and injuries even if you crash into it. Since it is toughened, it is much more difficult to break than ordinary glass. If it does shatter, it breaks into crystal-like ‘dice’ instead of jagged shards. Alternatively, it is bonded with a film that does not allow it to scatter.

Toughened glass is a regulatory requirement for windows that are less than 80cm from the floor. It is also required for windows or panels that are less than 30cm from a door. Moreover, double glazing glass needs to meet the BS 6206 standards to qualify as safety glass. That is, it should be able to resist an impact with an object weighing at least 45kg. Even if it breaks, it should break safely.

Laminated glass, on the other hand, not only protects you from shards but also cleaning said shards! This bonded glass has one of more layers of PVB. As a result, even if the glass breaks, it remains stuck to the inter-layer. It’s like a sticky tape that holds the broken bits in position. As a result, intruders can’t simply break the glass to enter.

Fire-Proof, Anti-Ballistic, and Explosion Pressure Resistant Glass

Your double glazing glass can also protect you from fire. This glass is strong enough to resist impact. As a result, it serves as a barrier against smoke and noxious gases, as well as flames. It also protects you from radiated heat and high surface temperatures. Moreover, it keeps the fire from spreading for a pre-determined period of time.

Finally, you have double glazing glass that protects you and your double glazing from malicious intents. This type of glass is able to resist attempts of vandalism or aggression. You also have bullet-resistant glass that needs to meet the BS EN 1063 standards to get that qualification. Similarly, you have the option of explosion pressure resistant glass.

Both these types of safety double glazing glass can be used if you live in a dangerous area. The latter is especially useful if you are in an area where accidental or criminal explosions are likely to happen.

Where Can I Get Double Glazing Glass For My Needs?

Nearly all double glazing suppliers and installers offer at least some specialised double glazing glass. You can contact your local approved double glazing companies for more information. Alternatively, you can get in touch with us. We have a team of qualified and helpful experts.

Simply fill out our online form with your contact information and requirements. Someone will get back with answers to all your queries. We’d also be happy to recommend trusted local double glazing glass suppliers.

Frequently Asked Double Glazing Questions

Frequently Asked Double Glazing Questions

Should I replace my old sash windows?

Sash windows are a key feature for many traditional period buildings. Sash windows were traditionally built using timber, which is fairly high maintenance and has a tendency toward rotting and warping. Over time, these windows can become draughty and insecure. uPVC sash windows are a great way to experience the benefits of modern double glazing, without sacrificing the aesthetic of your home. uPVC sash windows will not rot or warp and require little maintenance. They are also thermally efficient, which means that your home will not require as much heating.

How much does it cost to double glaze a 3 bed house?

On average a double glazed window will cost between £350 and £400, with a uPVC door typically costing £600. This means that double glazing a 3 bedroom semi can cost between £3500 and £5000.

How much does it cost to install a window?

The prices given in our pricing tables, our online quotes and our costing calculators reflect the price of the window itself as well as the cost of installation. For example, a 500mm x 500mm casement window will cost between £150 and £175 including the cost of installation.

Is Double Glazing Easy to Break?

No, double glazing is not easy to break which means your home will be more secure. When attempting to smash double glazing often what happens is that the first pane of glass and the second will remain intact. This is due to the argon gas working as a shock absorber. This will mean the smash is very loud but unsuccessful on the first attempt.

Is Double Glazing Worth It?

Double glazing helps make your home more energy efficient as it prevents the loss of heat. During the summer, it helps to keep the heat out of your home. It provides your home with sound insulation which is perfect for houses that are in busy areas and streets. Double glazing also makes your home safer and more secure.

How Long Does Double Glazing Last?

It is important to note that the argon gas that separates the panes of gas, giving double glazing its energy efficiency will eventually leak out overtime. Double glazing has an average life span of about 20 years, however, this can vary depending on materials used and the installation.

How Do I Know If My Double Glazing Needs Replaced?

Double glazing will need replaced after a while due to the nature of the design – the gas that separates the two window panes slowly leaks out over time meaning the energy efficiency of your window is compromised. If your double glazing allows cold spots; water to seep through the frame; has cracks or chips in the window or has a build-up of condensation between the two panes of glass (misted windows), you should probably look into getting your double glazing replaced or repaired.

Should I Double Glaze My Windows?

Double glazing works to make your house more energy efficient saving you money on your heating bills. Double glazing also provides sound insulation which is perfect if your house is situated near busy roads and noisy areas. Double glazed windows are also tougher and harder to break than single glazing windows making your house more safe and secure.

What Can Cause Double Glazing To Crack?

Double glazing can crack for what appears to be no particular reason at all. A sealed window unit faces constant pressure either side of the glass, however, most of the time double glazing is strong enough to deal with this. Winter can be one of the worst time for cracked glass as the difference of temperature on either side of the glass stressing it to the point it can crack.

Is uPVC Flammable?

No, uPVC isn’t flammable and is actually a fire retardant.

How Do I Know If My Double Glazing Needs Repaired?

There are four tell-tale signs that your double glazed windows need repair or replaced: There are chips and cracks in the panes of glass; there is condensation (misted windows) between the two panes of glass; the window allows cold air through; water begins to seep through the frame. If your double glazing does any of these things, you may need to get your double glazing repaired or replaced.

Does Double Glazing Block Sound?

Double Glazing not only provides heat insulation but it also provides sound insulation too. Double glazing is perfect for houses in busy areas and streets.

What Does Double Glazing Do?

Double glazing makes your house more energy efficient, keeping heating in and keeping the cold out during winter months. During summer months, it helps keep the hot air out, keeping your house cooler. It also works to insulate sounds from busy areas and roads, leaving your house more peaceful and quieter.

Is double glazing easy to break?

Double glazing is a strong option for windows compared to single glazing. The frames are durable and there are high security locking options. As double glazing is made from glass it is possible to break however you will have to exert quite a bit of force to do this. This is practically impossible to do without making a noise.

Is double glazing expensive?

Double glazing can be an affordable addition for many homeowners. The price you pay can depend on the quality of the windows and the energy ratings. Other factors are the style of the windows, the colour of the frames and the type of glass. Why not get an online double glazing quote to get an idea of the price.

What is the average cost to double glaze a house?

The average cost to double glaze a house will depend on the size of your house and the number of windows. To double glaze a flat or apartment it will probably cost around £2,000. The average cost to double glaze a house is usually between £4,500 to £7,500. If you collect a number of double glazing quotes you will be able to compare companies and prices.

How much is double glazing per window?

Double glazing prices per window can vary from around £150 to £600 depending on the specification. The window style, type of glass, frame colour and handles are all contributing factors. To find out the true double glazing price per window it is a good idea to get a number of quotes to compare.

If I Use Double Glazing on the Web Who Will Fit My Double Glazing?

Double Glazing on the Web have a fully accredited network of local installers. Once you have created your free online quote we will put you in touch with up to three reputable local suppliers. Each of these suppliers will offer you a free no obligation quote and who you choose is completely up to you.

Are Double Glazed Windows Good For The Environment?

Once of the best ways of making your home more energy efficient is insulation. Double glazed windows act as another layer of insulation, helping to prevent the loss of valuable heat.

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