What Is Glazing on Windows?

Glazing on windows might seem like a very technical term. However, in reality, it is really just all about the glass. The term refers to working with glass. Hence, a glazier is someone who works with or installs glass. Simple enough, right?

Which brings us to glazing on windows. Windows, more than doors, need glass. This is because doors are a barrier, while windows are, well, windows. You should be able to look out of them. Also, they should let in sunlight. In short? They need to be clear.

glazing on windows - You can have single, double, or triple glazing on your windows

However, windows are also the single-worst point for letting out heat. This is where double glazing and triple glazing on windows come in. These are two ways of installing the glass in your windows to trap and retain heat inside.

So, what are double and triple glazing? Moreover, does single glazing exist? How are they different from each other?

What Is Single Glazing?

If you break the term into its parts, you can easily figure out what single glazing on windows means. It is literally a single pane of glass. This is how windows were originally made. You had a frame, and it had a single pane of glass fitted in. If you used a clear pane of glass, you got a beautiful view. You also got plenty of sunlight.

However, a single pane of glass is terrible at keeping in the heat. Why is that? Simply because glass can conduct heat. As a result, when you warm your room, the heat rapidly escapes out. In fact, studies show that single glazing on windows can let almost 20% of the heat out.

What does that mean for you? It means that you have to constantly heat up your room to keep it at a steady temperature. This is not good for your heating, as it is constantly working. It is bad for you, because the extended heating makes your heating bills quite high.

Finally, it is not good for the environment. The more energy you consume, the more fossil fuels you burn. As a result, your carbon footprint grows. As you can see, single glazing on windows is quite inefficient at heat retention. Moreover, it’s bad for your wallet and the environment.

What Is Double Glazing?

most homes have double glazing on windows

Double glazing is a process where you install two panes of glass in a window. However, it’s not just two panes you install any way you like. They have a specific configuration. The double glazed sealed unit has two glass panes separated by a gap. This gap is 16mm or less. What does it do? It keeps air from circulating.

Let’s understand why this is important. As we learned earlier, glass conducts heat quite rapidly. However, air is a bad conductor. When you seal a pocket of air between two panes of glass, it acts like insulation. As a result, you reduce the amount of heat lost through conduction.

In some cases, the gap contains a gas like argon. Again, this gas helps insulate the glazing on windows. For even better insulation, you can have a vacuum between the two panes. As a result, you can reduce the heat loss by convection as well.

Convection, if you’re not familiar with the term, is a process of heat transfer. When you boil water in a pan, you heat it from the bottom. The hot water rises to the top and the cold water at the top sinks. This alternating flow is a convection current. It keeps flowing until all the water is at the same temperature.

Similarly, the air in the gap can transfer heat by constantly moving. A vacuum and the small gap in the glazing on windows, with no space for air to move, can help reduce it.

What Is Triple Glazing?

Triple glazing on windows is the same as double glazing, except with three panes of glass. Because of the third pane, and the additional gap between the inner and outer panes, you can further reduce heat loss. Triple glazing is slightly better in retaining the heat than double glazing on windows.

However, the high cost can negate the potential benefits. In fact, the cost benefit is high only if you replace old single glazing on windows, instead of new double glazing.

Should I Replace My Windows?

If you have single glazing on windows in your home, you should probably get it replaced. While the cost may seem exorbitant, you will make considerable savings in the long term. However, if you already have double glazing on windows, it doesn’t make sense for you to remove them.

One reason to replace double glazing on windows is if they are old and not performing as well. In this case, you will improve the performance of your home with double glazing. Another reason can be if the glazing on windows is damaged. You may have a window that has a crack or an impact mark. In such a scenario, you might want to replace the broken window.

However, if your home is a heritage property or in a conservation area, you might have to consult your local building authorities. As per building regulations, you usually aren’t allowed to make changes to the outer appearance of the building. In such a case, you should consider secondary glazing.

double glazing on windows helps improve the performance of your home

Where Can I Find Prices for Glazing My Windows?

If you want double glazing on windows in your home, you can start by comparing prices with us! We can help you find instant prices. What’s more, we can even recommend reliable double glazing companies in your area. To get your personalised glazing on window quotes, try out our online quote generator.

This is a handy tool that takes your requirements and specifications. It uses these to generate a quick quote for glazing on windows for you. You will have this quote emailed to you, so you can refer to it at any time. Alternatively, you can fill up our online contact form.

We have a team of qualified and helpful people. One of them will get in touch with you. They will help you get the prices for double glazing on windows for you. Moreover, they will put you in touch with FENSA or Certass approved local installers. Get a quote now!

Frequently Asked Double Glazing Questions

Frequently Asked Double Glazing Questions

Do UPVC Windows Need Trickle Vents?

Trickle vents are not a requirement, however they do offer additional ventilation without the need for opening your windows so can be a valued add on.

How Long Will It Take To Install My Casement Window?

Because every job is different, it is best your talk to your double glazing installer who will be able to give you an exact timescale.

Are There Other UPVC Casement Window Styles?

Other UPVC casement window styles include the French casement window which is a more traditional take on the standard casement style.

Will I Have A Choice of Casement Window Locks?

A high security lock will be fitted as standard with your new casement window but your double glazing installer will also offer a choice of security upgrades.

What Are Flush Casement Windows?

Flush casement windows are where the unit sits flush to the frame, creating a super sleek look.

Are There Different UPVC Casement Window Sizes?

UPVC casement windows come in a wide range of sizes to suit your property. You can specify your casement window size in our window cost calculator to get a unique window price!

Can I Choose My Casement Window Handles?

Your double glazing installer will offer you a choice casement window handles and casement window hardware options so you can achieve the perfect look.

What is a Casement Window?

A casement window is attached to its frame by one or more hinges. A casement window is hinged at the side allowing them to open extremely wide. These windows can double up as emergency exits and are perfect for hard to reach places within the home, with many home owners installing these windows behind their kitchen sinks.

Where Can I Get A Tilt and Turn Windows Price?

You can get a tilt and turn windows price using our window cost calculator which will give you a free and unique quote within a matter of minutes.

How Does The Tilt and Turn Window Mechanism Work?

The tilt and turn window can be ‘tilted’ inwards due to its unique turning action which allows the window to be easily accessed from both inside and out. All it takes is a swift turn of the handle.

How Much Do French casement windows cost?

The cost of French casement windows will vary depending on installer but you can get an average casement windows cost using our free online quoting engine

How do UPVC Sash Windows Work?

UPVC vertical sliding sash windows are built to either slide vertically downwards or upwards. This opening function makes the UPVC sash window much easier to use compared to traditional wooden windows where the only choice is double hung and single hand.

Are UPVC Sash Windows Easy To Use?

UPVC sash windows are very easy to use. Their spiral balance mechanism allows for smooth operation so you can open and close your windows with ease. UPVC sash windows are also incredibly low maintenance and require very little cleaning.

Why Should I Choose a UPVC Sash Window?

UPVC sash windows are incredibly attractive and make a stunning addition to any property and are relatively low maintenance thank to their UPVC design. You can enjoy a traditional aesthetic for many years to come thanks to their long standing properties.

Replacement Sash Windows In A Conservation Area

If your home is a listed property or within a conservation area then you will need to seek planning permission.

Bay or Bow Window?

Simply put, it really depends! Bay windows offer often much welcome and useful extra storage space to the frontage of homes. On the other hand, bow windows provide a curved shape alternative in terms of look compared to bay windows. They are both beautiful options and can add much character and charm to the right property.

Can Bay Windows Look Modern?

Bay windows can easily be either modern or traditional depending on the combination of glass and / or coloured uPVC profiles now available. Subsequently, its easy for these windows to seamlessly blend in with contemporary or old properties.

Can Double Glazed Windows Reduce My Heating Bills?

When you install double glazing in your home or commercial property, it is likely that the extra heat retention will lessen the need to use central heating systems. In turn, this could mean you see a drop in heating bills. If you are concerned about your energy bills, it is easy to compare business energy or home energy online.

What Makes Flush Sash Windows Different?

Flush sash casement windows are specifically designed to imitate the appearance of traditional wooden timber windows by appearing to have the same sashes that finish 'flush' with the outside face of the window.

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 sash window restoration cost?

The cost of sash window restoration will depend on the survey result. Standard draught proofed sash windows (without sill replacement) usually starts at about £500 per window. The time taken will also depend on the survey result.

Can I install double glazing into my original sash windows?

This will depend upon what type of window you have. Replacing existing moving sashes with new, double glazed replicas might to be possible.

How much does it cost to replace a sash window?

The cost of replacing a sash window will depend on many factors including: style, size, material and glazing. A wooden sash window will cost significantly more than a uPVC sash window. A wooden sash window can cost up to £1000. Wooden windows are more expensive to manufacture so expect to pay that bit more. uPVC sash windows can be designed to mimic wood and are much cheaper in price. The starting price for a standard uPVC sash window is on average £525.

Double Glazing Prices