How Thick is Double Glazing?

thick double glazing

Double glazing provides many benefits to the home. These include but aren’t limited to improved thermal insulation, noise reduction and increased security. Double glazing achieves this by providing the home with windows and doors that are exceptionally thicker than their single glazing counterparts.

The innovation came around in the 1980s when uPVC also hit the scene and became the standard across British homes. Here at Double Glazing on the Web, we want our customers to become experts on the nature of thick double glazing so that they know what they’re purchasing when they’re making home renovations. So today, we wanted to focus on how thick double glazing is and how that helps the home.

The Facts

  1. A single glass pane is usually around 4mm thick.
  2. Double glazing then provides two panes of glass for a total of 8mm
  3. The gap between the glass is usually between 6mm to 20mm
  4. 12mm is the most common space between the two panes of glass
  5. Thickness of the whole installation is, on average, 24mm thick
  6. This can be customized to suit your specific needs from most companies.

What does the gap between the glass do?

thick double glazing

The gap between the glass panels, otherwise known as the air pocket, is most often filled with a thermally insulating gas, usually argon, to keep the home insulated. When cold air from the outside comes into contact with the outer pane of glass, it is important to separate that pane from the interior pane.

By separating the two panes with a layer of insulating gas, the thermal energy is slowed from leaking out of the house. It doesn’t stop it completely from leaving home. However, it drastically reduces how much heat is lost. This keeps the home warm throughout the year on less energy, saving you money and keeping your carbon footprint down.

Comparison with Triple Glazing

While thick double glazing is the maximum commonplace sort of glazing, triple glazing is also available. Triple glazing features 3 panes of glass, with air wallet filled with insulating gasoline. This greater layer of glass and insulation affords even better thermal insulation and noise discount in comparison to thick double glazing. However, triple glazing is extra high-priced and won’t be vital for all homes.

Safety and Security

The thick double glazing also contributes to stronger safety and safety. The two panes of glass make it extra difficult for intruders to break through, supplying an additional layer of protection for your private home. Additionally, thicker glass is much less in all likelihood to shatter within the event of an impact, decreasing the danger of harm.

Sound Insulation

Thick Double glazing additionally plays a essential role in decreasing noise pollution and improving sound insulation. The air gap between the two panes of glass facilitates to take in sound waves, minimizing the amount of out of doors noise that enters your private home. This is particularly beneficial in case you stay in a hectic area or near a first-rate avenue.

Energy Efficiency Ratings

The thick double glazing can impact a home’s energy performance score. Windows with thicker glass and large air gaps have a tendency to have higher thermal insulation residences, which could result in higher strength efficiency ratings. When deciding on double glazing, look for home windows with a high electricity performance score to maximize power savings and reduce your carbon footprint.

Installation Process

The thick double glazing can affect the installation manner. Thicker glass and larger air gaps may additionally require a higher body and extra aid throughout set up. However, a expert installer could be able to check your specific necessities and ensure that your double glazing is set up efficiently and safely.

Maintenance and Durability

Thick Double glazing contributes to its durability and low protection requirements. The robust production of double glazing manner that it’s miles much less possibly to warp, crack, or become worse over time in comparison to unmarried glazing. Regular cleansing and low lubrication of transferring components are commonly all that is required to hold your thick double glazing in appropriate condition.

Building Regulations

In the UK, there are unique constructing guidelines that relate to the thickness and strength performance of double glazing in residential residences. These policies are designed to make certain that homes are strength-efficient and environmentally friendly. When installing thick double glazing, ensure that your chosen product complies with all relevant constructing regulations.

Can I customise My thick Double Glazing windows?

Yes, you absolutely can! The glass itself is usually 4mm thick, but you can request to have one pane thicker than the other or have both thicker than the average. Having thicker glass will increase all of the benefits of thick double glazing.

You can also choose to have the gap increased between the two panes of glass which similarly improves the performance of the windows in all areas. This particularly helps with thermal insulation as it allows more thermally insulating gas to be placed in the installation. However, this comes with a price increase that can be explained to you by your installer if you ask them.

What do we do here at Double Glazing on the Web

Our goal is to make sure that our customers are fully aware of the best prices on the market for their double glazing installations. With us, you can be assured that our industry expertise and connections will provide you with the most competitive selection of costs from various installers.

We also want to make sure that our customers are experts on thick double glazing so that they know what they’re buying and can ask the right questions to the right people when the time comes.

If you’re interested, please feel free to use our

and start your next home improvement project with Double Glazing on the Web!


In the end, the thickness of double glazing plays an important position in determining its overall performance and the benefits it provides to your private home. By experiencing the numerous components and customization options to be had, you can make an informed selection whilst upgrading your home windows. Thick Double glazing gives improved thermal insulation, noise discount, multiplied safety and safety, and better energy efficiency. While triple glazing may additionally provide even extra advantages, it comes at a higher cost and may not be essential for all houses. 

When putting in double glazing, make certain that you select a reputable installer who adheres to all relevant constructing guidelines. With proper upkeep, your thick double glazing will offer lasting sturdiness and performance for years yet to come. At Double Glazing on the Web, we are devoted to assisting our clients make knowledgeable decisions and discover the satisfactory double glazing answers for their houses.


How does the thickness of double glazing compare to unmarried glazing? 

Double glazing is extensively thicker than unmarried glazing, with a total thickness of around 24mm on average, in comparison to simply 4mm for a single pane of glass. This extended thickness permits for advanced thermal insulation, noise discount, and more suitable safety and protection.

Can I mix healthy different thicknesses of glass in my double glazing? 

Yes, you may choose to have one pane of glass thicker than the other for your thick double glazing. This customization can be beneficial when you have particular necessities for thermal insulation, noise discount, or protection. Your installer could be able to suggest an exceptional configuration to your desires.

How does the air gap between the panes of glass in double glazing paintings? 

The air gap between the 2 panes of glass in double glazing is usually filled with an insulating fuel, including argon. This gas helps to sluggish down the switch of thermal electricity, maintaining your own home warmer inside the iciness and cooler inside the summertime. The greatest thickness of the air gap is around 12mm, but this could be customised based totally on your precise requirements.

Will thicker double glazing make my home windows extra tough to open and near? 

Thicker double glazing may additionally require a more robust frame and hardware to support the accelerated weight of the glass. However, an expert installer will make certain that your home windows are properly balanced and altered, so you have to no longer revel in any difficulty in beginning and last them.

How often do I need to update my double glazing? 

Double glazing is designed to last for decades, with a standard lifespan of 20-30 years. However, the actual lifespan of your double glazing will rely upon factors inclusive of the grandeur of the installation, the substances used, and the extent of renovation. Regular cleansing and occasional lubrication of transferring parts can help to increase the lifestyles of your double glazing. If you notice any signs of damage or deterioration, such as condensation among the panes of glass, it is time to not forget an alternative.

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