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Astragal Bars vs Georgian Bars - Differences & How They Work


Astragal Bars vs Georgian Bars – Differences & How They Work

Myles Robinson
Written by Myles Robinson
Updated on 21st February 2024
Posted on 25th January 2024

Charming Astragal and Georgian Window Bars

Georgian Bars fitted into Windows

You might be looking to get window bars installed in your home, and you're unsure what the ins and outs of them are. Well, we are here to give you the tips you need to make the decision.

When deciding on the right window bar design for your property, understanding the differences between astragal bars and Georgian bars is essential. This article will delve into the distinctions between the two, offering a clear comparison in terms of appearance, functionality, and installation.

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Whether you’re aiming to maintain the traditional charm of your home or enhance its aesthetic with a touch of history, knowing the nuances of astragal bars vs Georgian bars will guide you towards a well-informed decision for your window styling needs.

Georgian Bar Windows or Astragal Bars - Overview

  • Astragal bars are fitted both internally and externally to a single pane of glass to give the effect of multiple panes, whereas Georgian bars are integrated within the window unit between layers of glazing, offering a seamless look.
  • While Astragal bars add to the security of a window due to their bonding to the glass, Georgian bars have the advantage of less maintenance and better protection from the elements as they are sealed within the double-glazed unit.
  • Both styles of bars maintain the energy efficiency and noise reduction benefits of modern uPVC windows, but their aesthetic, security contributions, costs, and maintenance requirements differ, affecting homeowner preference and choice.

Astragal Bars and Georgian Bars

You can't really decide which window bars are better if you don't know the difference, right? So here, we will go through the key distinctions between them.

Astragal and Georgian bars are more than just decorative elements. They can significantly enhance the appearance, security, and privacy of a property.

Designed to mimic the appearance of traditional Georgian-style windows, these bars transform the look of a single glass pane into the effect of multiple small panes of glass.

While both Astragal and Georgian bars serve the same purpose of enhancing the overall appearance of homes, their design and application differ.

Astragal bars are fitted to a single pane of glass internally and externally, while Georgian bars are integrated within the window unit. We will discuss this further for a better understanding.

Astragal Bars

Astragal bars serve as a bridge between traditional architecture and modern window constructions. They are fitted to a single pane of glass, both internally and externally, giving the effect of multiple panes of glass on a single piece.

This design element enhances the style of period-era windows, offering a higher level of security and a greater sense of privacy.

The use of Astragal bars in double-glazed windows provides the following benefits:

  • They provide the traditional look of separate panes
  • They offer the benefits of modern window technology
  • They are fixed to the window’s glazing on both sides, which ensures that the bars don’t compromise the window’s integrity while serving their aesthetic purpose.

Georgian Bars

On the other hand, Georgian bars are designed to add a classic, traditional charm to a window’s appearance. Unlike Astragal bars, Georgian bars are integrated within the interior of the window unit, making them a part of the window’s structure.

They are placed between layers of glazing to achieve the look of the traditional Georgian style without individual panes.

The integration of Georgian bars within the Georgian bar windows unit offers a more integrated look compared to Astragal bars.

This design not only enhances the visual appeal of the windows but also ensures that the bars don’t interfere with the window’s functionality.

Comparing Astragal Bars and Georgian Bars

Now that you know how Astragal and Georgian bars work, let’s delve deeper into their differences. Both types of bars offer different appearances and levels of security due to their unique placement and design.

Georgian bars sit between the panes of glass, creating a smooth external surface, while Astragal bars are applied to the surface of the glass, giving windows a traditional, multi-pane appearance.

Apart from their aesthetic differences, Astragal and Georgian bars also vary in their security benefits. Astragal bars offer added physical security because they are bonded to the glass.

However, Georgian bars, being sealed within the window unit, require less maintenance as they are protected from environmental factors.

In addition to your window bars, you can add security window film to your windows, which can increase the level of protection even more.

These aspects will be discussed in the sections that follow.

Appearance and Design

Astragal bars are a modern imitation of traditional glazing bars used historically in period sash windows to hold small panes of glass. They provide the appearance of individual windowpanes on a single piece of glass, giving your windows a traditional and multi-panelled appearance.

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On the contrary, Georgian bars offer a more integrated look as they are sealed within the interior of the traditional Georgian windows unit. They serve a purely decorative purpose, adding a traditional Georgian aesthetic to your windows, reminiscent of the Georgian period.

Astragal bars, on the other hand, are affixed both internally and externally to the window pane, creating a more authentic replication of traditional multi-pane windows with glass panes.

Functionality and Security

In terms of functionality and security, both Astragal and Georgian bars have quite a bit to offer. They reinforce the window structure, making it more challenging for potential intruders to force entry.

This enhancement in security does not compromise the natural light flowing into your property, as both styles of bars add an element of privacy by subdividing large glass areas.

Keep in mind that, whereas in the past, window bars held multiple small panes of glass and contributed to the window’s structure, modern Astragal and Georgian bars primarily serve for aesthetic enhancement rather than providing structural support.

Modern uPVC windows with either Astragal or Georgian bars provide the same energy-saving benefits as those without bars by maintaining warm air inside and keeping cold air outside.

Cost and Maintenance

When considering cost and maintenance, Georgian bars generally have an advantage. They are typically more cost-effective than Astragal bars due to the use of fewer materials and less labour for installation. Moreover, Georgian bars, being sealed within the double-glazed unit, require less maintenance and are protected from the weather, leading to improved durability and less wear over time.

On the other hand, Astragal bars, fitted on both the interior and exterior, are more susceptible to the elements and thus may need more frequent repainting and maintenance.

However, modern window techniques alleviate the need for frequent replacement of Astragal bars, and they can be tailored using a variety of materials to suit different styles and preferences.

Choosing Georgian Bars or Astragal Bars

Now, here comes the big choice: astragal bars or Georgian bars? To help you out a bit, we'll say which window bars are best depending on your own situation.

Choosing between Georgian and Astragal bars is not a simple decision. It goes beyond just the aesthetic appeal and involves considering your property’s style, desired aesthetic impact, and personal preference. Georgian bars fit well with both traditional and contemporary home styles, offering flexibility in aligning with the property’s architecture.

Astragal Bars in Windows

On the other hand, Astragal bars imitate the style of traditional wooden windows, making them a suitable option for maintaining a classic architectural look with modern materials.

Georgian and Astragal bars can enhance the overall aesthetic and kerb appeal of a home, adding an element of elegance. However, keep in mind that Astragal bars are commonly chosen for period properties to achieve a truly traditional appearance.

Ultimately, homeowners choose between Georgian and Astragal bars based on personal preference while considering their property’s style and desired aesthetic impact.

Modern Homes and New Builds

Contemporary homes can incorporate both Astragal and Georgian bars, which complement modern architectural styles. The Rose Collection, for instance, offers uPVC sash windows that come with the option of astragal or Georgian bars, providing design choice adaptability for contemporary properties.

Both Astragal and Georgian bars are available with finishes that mimic a realistic timber look, enhancing modern homes without necessitating the maintenance associated with actual timber frames.

Window bars are very common with bay windows to amplify the clean look, but can obviously add to the overall cost of bay windows, so take this into consideration.

That said, the decision to opt for Astragal or Georgian bars in a modern home is largely influenced by individual taste and aesthetic preferences.

Personal Preference and Budget Considerations

Every homeowner has a unique style preference, which plays a big role when choosing between Astragal and Georgian bars. Some may prefer the authenticity of traditional window styles offered by Astragal bars, while others may lean towards the integrated look of Georgian bars.

Modern uPVC windows with Astragal or Georgian bars offer a wide selection of colours and added accessories, allowing customisation to fit personal preferences and budgets. Therefore, it’s important to consider your style preferences and budget constraints while making the choice.

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Impact of Astragal and Georgian Bars on Window Performance

As nice as Georgian and astragal bars might be to look at, they may seem like a bit of a waste of money if they don't have any practical benefits.

Luckily, the integration of Astragal and Georgian bars offers several benefits:

  • It does not compromise the functionality of windows
  • It can be integrated with current window technologies
  • It ensures an aesthetic appeal
  • It does not compromise on energy efficiency and security levels.

We will further discuss the impact of these bars on various aspects of window performance.

Energy Efficiency

One might wonder if the addition of Astragal or Georgian bars impacts the energy efficiency of windows. Rest assured, neither Georgian nor Astragal bars will have a negative impact on the energy efficiency of uPVC windows.

Georgian bars are designed to be placed inside the sealed double glazing unit, between layers of glazing, which enables a traditional appearance without compromising energy efficiency.

Similarly, modern uPVC windows, when equipped with either Astragal or Georgian bars, offer double glazing as standard, ensuring the energy efficiency of the window remains intact. This can be improved even more with the addition of insulation window film. With the addition of Georgian glazing bars, the aesthetic appeal of these windows is further enhanced.

Noise Reduction

Astragal and Georgian bars don’t just add visual appeal but also play a role in the sound insulation properties of windows. Windows featuring either Georgian or Astragal bars are highly effective in noise reduction, thereby contributing to a quieter environment within the home.

The incorporation of Astragal and Georgian bars in window design results in quieter interior spaces, making them ideal for homes in noisy areas or for individuals seeking a calmer living space.

Durability and Longevity

In terms of durability and longevity, there’s a significant difference between windows with Georgian bars and those with Astragal bars. Windows with Georgian bars require the entire pane to be replaced in the event of glass breakage, while Astragal bars may allow for the replacement of smaller, individual panes.

On the brighter side, Astragal and Georgian bars are designed to flex with the window unit, which accommodates toe and heeling without impacting their effectiveness. This feature contributes to the durability of the window.

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Installation and Retrofitting Window Bars

When it comes to installing new windows or retrofitting existing ones, homeowners can choose between Astragal or Georgian bars. The choice should consider factors like:

  • Historical accuracy
  • Personal preference
  • Budget
  • The integrity of existing windows

The installation and retrofitting processes of these bars will be discussed in the following sections.

New Window Bar Installations

For new casement windows installation, homeowners can create bespoke windows by choosing between authentic Astragal bars or internal Georgian bar alternatives.

The installation process involves attaching the bars to the window’s surface and may include a range of components such as edge clips, centre clips, Georgian bars, and optionally end caps and cruciform covers.

However, if noise reduction is a priority for you, there’s an option to choose acoustic glass during installation. This offers enhanced noise reduction compared to standard glazing options.

Retrofitting Bars on Existing Windows

For those looking to update the style of their existing windows without replacing them entirely, retrofitting is a cost-effective solution.

Georgian bars can be added to existing windows to modernise their style while ensuring they match the window sashes. Astragal bars can also be retrofitted to existing windows to mimic the traditional multi-pane look.

During window re-glazing, Astragal and Georgian bars can be removed and reapplied, preserving their position and the window’s appearance. Furthermore, existing UPVC windows, including those with Astragal bars, can be refurbished with a new coat of paint from UPVC spraying services to enhance their visual appeal.

Astragal Bars v Georgian Bars for Windows - Our Verdict

With our expert guide coming to an end, you will hopefully understand that both Astragal and Georgian bars have their unique charm and benefits. Whether you’re looking for an authentic replication of traditional multi-pane windows or a more integrated look, both offer substantial aesthetic and security benefits.

Ultimately, the choice between Georgian and Astragal bars comes down to personal preference, the style of the property, and budget considerations. Regardless of the choice you make, you can be confident that these bars will add a touch of elegance and enhanced security to your home.


What are Georgian bars?

Georgian bars are bars fitted to windows to give them a Georgian style, creating a grid pattern typical of Georgian period windows. They can be applied to the inside or outside of a window pane.

Are Georgian bar windows more expensive?

2 Windows with Astragal Bars

Yes, Georgian bar windows can be more expensive than standard windows due to factors such as the type of material, size, style, and complexity of the grid pattern.

However, they offer several benefits that can make them a worthwhile investment.

Can you remove Georgian bars from double glazing?

No, you cannot remove the Georgian bars from double glazing because they are sealed within the window unit to achieve the traditional Georgian design.

Can you add astragal bars to existing windows?

Yes, you can enhance the aesthetics of your windows by adding astragal bars using adhesive tape, along with other trims and profiles, to achieve a traditional and visually pleasing design.

Do Astragal and Georgian bars affect the energy efficiency of windows?

No, Astragal and Georgian bars do not impact the energy efficiency of uPVC windows.

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Written by
Myles Robinson
Myles Robinson Managing Director
Posted on: 25th January 2024
Topic: Advice

Myles is one of our esteemed directors at Value Doors, dedicated to sourcing and fitting the best composite doors and windows. His mission is to offer our customers exceptional deals on energy-efficient composite doors, focusing on reducing costs while making sure the most advanced technology is readily available for installation. This commitment is what motivates Myles in the door industry.

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