Georgian Architecture: Recreating The Classical 6-Over-6 Grid With Modern Windows

If you own a Georgian property, or simply love the symmetry and elegance of Georgian architecture, you’ll know that getting the windows right is everything. The defining feature of Georgian style windows is that iconic grid of small, evenly proportioned panes, typically arranged in a 6-over-6 pattern. It’s a look that has endured for over 300 years, and for good reason.

But here’s the challenge: recreating that look authentically with modern windows isn’t always straightforward. Traditional timber windows are expensive, require significant upkeep, and aren’t always permitted under conservation area guidelines. That’s where Timberlook wood-effect uPVC windows come in.

What makes Georgian windows so distinctive?

To understand why Georgian style windows are so recognisable, it helps to take a closer look at the architecture itself.

The Georgian era

The Georgian era, broadly spanning 1714 to 1830, produced some of Britain’s most admired townhouses, terraces, and country homes. Georgian architecture is defined by its strict symmetrical design: sash windows arranged in neat rows, tall proportions, and that characteristic grid of smaller panes of glass divided by glazing bars.

Georgian window design

The reason Georgian buildings used smaller glass panes wasn’t purely aesthetic. It came down to glassmaking technology of the time. Glass could only be produced in relatively small sheets. Larger panes of glass simply weren’t achievable, so Georgian window frames were engineered around this limitation, using slim astragal bars and glazing bars to hold individual panes of glass in place.

As glassmaking technology advanced into the Victorian period, larger panes became possible, and the Georgian grid gradually gave way to Victorian windows with fewer glazing bars and larger panes of glass.

The Georgian look, however, remained a benchmark of elegance, and it still is today.

The 6-over-6 grid: a closer look

The 6-over-6 window style, six small panes in the upper sash and six in the lower, is perhaps the most iconic of all Georgian window designs. It creates that perfect balance of light and proportion that Georgian architecture is famous for.

In original Georgian buildings, these were typically sliding sash windows, with the upper and lower halves gliding vertically past one another. The slim glazing bars separating each pane were usually made from timber, carefully crafted to be as narrow as possible to maximise natural light while maintaining the structural integrity of the window.

Today, replicating this look accurately in new windows requires real attention to detail, particularly the quality of the windows, the width of the glazing bars, and how authentically the overall proportions are captured.

Why uPVC is now a practical solution for Georgian homes

For many homeowners with Georgian properties or period properties, the instinct is to stick with traditional timber windows.

However, timber windows come with well-documented drawbacks: they require regular painting, are prone to rot and swelling, and can be costly to repair or replace.

Modern uPVC windows, when designed correctly, offer an excellent alternative. They deliver strong energy efficiency performance, improved security, and require very little maintenance, no painting, no sealing, no warping. For Georgian homes and contemporary homes alike, this is a significant advantage.

How Timberlook recreates the Georgian look

Timberlook’s flush casement windows are specifically designed to replicate the appearance of traditional Georgian windows, including the authentic 6-over-6 grid, without the drawbacks of timber.

Timberweld technology

Unlike standard uPVC windows, which are joined at visible diagonal welds at the corners, Timberlook windows are manufactured using the innovative Timberweld process. This eliminates the tell-tale diagonal weld lines and creates window frames that genuinely look like they’ve been crafted from timber.

Slim glazing bars and authentic astragal bars

Timberlook’s Georgian bar windows use slim glazing bars that closely replicate the proportions of original 18th century timber windows, maintaining the classic 6-over-6 grid with accurate sightlines.

Concealed trickle vents

Background ventilation is a building regulation requirement, but on heritage windows, visible vents can destroy the aesthetic. Timberlook’s concealed trickle vents maintain the heritage look without compromise.

Double glazing units

Despite their period-accurate appearance, Timberlook windows house modern double glazing units, significantly improving thermal performance and contributing to lower energy bills compared to single pane of glass originals.

Flush casement windows as a sash window alternative

Flush casement windows are a great option as a replacement for sash windows in Georgian buildings, and they can feature the full 6-over-6 panel design using Georgian astragal bars and glazing bars.

This is a practical solution that many homeowners and planning officers are increasingly receptive to, particularly where the finished result is faithful to the original window style.

Our Timberlook flush casement windows have been used successfully in conservation areas, satisfying planning requirements while delivering the performance benefits of modern materials.

Conservation areas: what you need to know

If your Georgian property sits within a conservation area, you’ll need to ensure any new windows are in keeping with the character of the area. Article 4 Directions, which remove certain permitted development rights in conservation areas, mean that planning permission may be required before replacing windows.

Timberlook windows are designed to meet all the guidelines outlined in Article 4 conservation area legislation. Their authentic proportions, slim glazing bars, and woodgrain finishes have been approved for use in conservation areas, making them a credible option for even the most sensitive heritage projects.

Customisation options

One of the genuine strengths of Timberlook’s range is the breadth of customisation available. Georgian homes are not one-size-fits-all, and neither are Timberlook’s windows. Options include:

Colour finishes

A wide range of standard colours, dual-colour combinations, and woodgrain effects, including popular choices such as anthracite grey and light oak

Georgian bar configurations

Choose the number and arrangement of glazing bars to suit your property’s specific proportions

Glass options

Including double glazing units as standard, with options to discuss specific performance requirements

Whether you’re restoring a Georgian townhouse, upgrading a period property, or bringing Georgian style to a modern home, there’s a configuration to suit.

Frequently asked questions

What are Georgian style windows?

Georgian style windows are characterised by their symmetrical design and grid of small panes divided by slim glazing bars. The classic 6-over-6 arrangement, featuring six individual panes of glass in both the upper and lower sections, is the most iconic example of this architectural style, originating in the Georgian era of the 18th century.

Are Timberlook windows energy efficient?

Yes. Timberlook windows feature modern double glazing units which significantly improve thermal performance compared to original single pane of glass Georgian windows. This helps reduce heat loss and lower energy bills, a meaningful upgrade for owners of older Georgian homes.

Do Timberlook windows look like real timber?

Timberlook windows are manufactured using the Timberweld process, which eliminates visible weld lines and creates a result that closely mimics traditional timber windows. Combined with authentic mortise and tenon joints and slim glazing bars, they are widely regarded as among the most authentic timber alternatives available.

Can I replace sash windows with Timberlook flush casement windows?

Yes. While Timberlook does not offer sliding sash windows, our flush casement windows can be installed as a replacement and can feature the traditional 6-over-6 grid using Georgian astragal bars.

Get in touch with Timberlook

If you’re considering new windows for a Georgian property, whether it sits in a conservation area or not, Timberlook’s team is ready to help. With a range designed specifically to replicate the classic proportions of Georgian architecture using modern, low-maintenance uPVC, they offer homeowners the peace of mind that comes with both authentic aesthetics and lasting performance.

To find out more or to locate a Timberlook installer in your area:

Fill in the online contact form or call the team on 01253 888 222.