Sash · Casement · Solid, duplex or applied bars
Georgian Style Windows in Timber
Georgian windows divide the glass into small, upright panes with timber glazing bars — the defining look of 18th- and early 19th-century British architecture. We make timber Georgian windows to your measurements: sliding sashes and flush casements with solid, duplex or applied bars, double glazed as standard and part of our range of bespoke timber windows.
From £649+VAT
Solid, duplex or applied bars
Double glazed as standard
Pine, meranti or oak
~20 working day lead time
5-year warranty
The basics
What Are Georgian Windows?
Georgian windows are windows divided into a grid of small panes by glazing bars, usually in portrait proportion — taller than they are wide. The style dates from the Georgian period, when glass could only be made in small sheets, and it has remained the default look for period British homes ever since.
The double-hung sliding sash was the standard British window from about 1700 until the First World War, so most Georgian windows are sashes. Today the same bar layouts are used on casements, new builds and extensions, wherever the classic proportions suit the building.
Glazing bars
Georgian Glazing Bars: Solid, Duplex and Applied
How the glazing bars are made decides how authentic a Georgian window looks up close, how it performs thermally and whether a conservation officer will accept it. We make all three types.
| Bar type | Construction | Thermal performance | Appearance | Cost | Best for |
|---|---|---|---|---|---|
| Solid through-bars | Bars run the full depth of the sash; each pane has its own slim 14–20mm sealed unit | ≈1.6–1.8 W/m²K | Most authentic — real depth and shadow lines | Highest: £100–200 more per window than applied | Listed buildings and conservation areas |
| Duplex bars | Bars on both glass faces plus a matching spacer bar inside one standard 24mm unit | As plain double glazing (1.4 W/m²K) | Convincing from inside and out | Between applied and solid | Most homeowners — our most popular option |
| Applied bars | Bars bonded to the glass face of one large 24mm unit | As plain double glazing (1.4 W/m²K) | Convincing from 10 metres; flat join up close | Lowest | New builds, rear and less prominent elevations |
Solid bars are the original method: the bar is part of the sash, so when sunlight hits at an angle you see genuine depth. On principal elevations of listed buildings and in conservation areas they are almost always required — there’s no point saving £150 a window if it gets your application refused.
Duplex bars are the compromise: something visible between the glass layers makes the panes look separate from both sides, while the single 24mm unit keeps the thermal performance of a plain double-glazed window. Applied bars cost least and perform best thermally, with fewer cold bridges, and a damaged bar can be replaced without reglazing. Always check with your conservation officer before ordering — what one council accepts, another may not.
Patterns
Georgian Bar Patterns and Proportions
The classic Georgian pattern is six-over-six: six panes in each sash, three across and two high, on windows roughly 900–1200mm wide. Each pane ends up in portrait proportion, which is the hallmark of good Georgian design.
As a rule of thumb, panes should be about 1.5 times as tall as they are wide. Narrower windows suit two-over-two or three-over-three; wider openings may take eight-over-eight. If a proposed pattern produces square or landscape panes, the window will look wrong — we’ll flag it before manufacture, not after.
Lighter layouts work too. Half-Georgian designs put bars in the top sash only, and a single cross bar gives four panes for a simpler, cottage look. Every extra bar adds timber and visual weight; Georgian architecture favoured slender frames, narrow bars and as much glass as possible, so resist overcomplicating the pattern.
Sash windows
Georgian Sash Windows
If your property dates from the 18th or 19th century, or nods to it architecturally, a Georgian sash is almost certainly the right window. We make Georgian sash windows in two versions.
The Georgian sash on weights uses traditional cord-and-weight operation, with counterweights hidden in the box frame — the authentic choice for period properties — from £649+VAT. The Georgian sash on hidden springs uses concealed spiral spring balances for a slimmer frame profile, from £699+VAT. Each sash is balanced for its own weight including the glazing, which matters because double-glazed units are much heavier than the single glass these windows originally carried.
Casement windows
Georgian Casement Windows
Georgian casements are less historically common than sashes but perfectly suited to cottage-style properties, rear extensions, orangeries and openings where a sliding sash isn’t practical. Our flush casements sit flat within the frame when closed, giving the same clean face line as a sash.
Options include a flush single casement with a cross glazing bar from £449+VAT, a flush double casement from £599+VAT and the Georgian triple flush casement from £799+VAT, each with your choice of bar pattern.
Contemporary homes
Modern Georgian Windows
Modern Georgian windows keep the grid of glazing bars but pair it with contemporary performance and finishes. The usual recipe is duplex or applied bars over a full 24mm double-glazed unit, achieving 1.4 W/m²K, on a hidden-spring sash or a flush casement for a slimmer, cleaner frame.
Colour does the rest. Every frame is factory finished in your choice of RAL or Farrow & Ball colours, from heritage whites such as Pointing or Wimborne White to darker tones that give the grid a sharper, more modern outline. Simpler patterns — a single cross bar, or bars in the top sash only — suit new builds that want Georgian character without the full six-over-six.
Glazing
Double Glazed Georgian Windows
We double glaze Georgian windows routinely, and the method depends on the bar type. Solid through-bars use slim 14mm or 20mm sealed units in each pane, achieving around 1.6–1.8 W/m²K: not quite a full unit, but dramatically better than the single glazing they replace and acceptable to conservation officers. Duplex and applied bars sit over one standard 24mm unit at 1.4 W/m²K.
For noise-sensitive or low-energy projects, triple glazing and acoustic glass are also available. More detail in our guides to double glazed wooden windows and energy-efficient timber windows.
Choosing the timber
Best Timber for Georgian Windows
Georgian windows are almost always painted, so the timber underneath doesn’t show — which is why most of our Georgian orders are engineered pine. It gives the same painted result as oak at a fraction of the cost.
Choose hardwood or solid oak when a conservation officer specifies it on a listed building, when you want the longest possible service life, or in the rarer case that the frames will be stained rather than painted.
Our Best-Selling Timber Windows:
Georgian Windows — Frequently Asked Questions
What makes a window Georgian?
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A Georgian window divides the glass into small panes with glazing bars, usually in a regular grid of portrait-shaped panes — six-over-six is the classic sash layout. The style comes from 18th- and early 19th-century Britain, when glass was made in small sheets, and is most often seen on sliding sash windows.
What is the difference between solid, duplex and applied Georgian bars?
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Solid bars run through the sash, with a separate slim sealed unit per pane — the most authentic option. Duplex bars sit on both glass faces with a spacer bar inside one 24mm unit. Applied bars are bonded to the surface of one unit. Applied is cheapest; solid is usually required for listed buildings.
Can Georgian windows be double glazed?
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Yes. With solid bars each pane gets its own slim 14–20mm sealed unit, reaching around 1.6–1.8 W/m²K. With duplex or applied bars the window uses one standard 24mm unit at 1.4 W/m²K, the same as plain double glazing. Triple and acoustic glazing are also available.
What are the correct proportions for Georgian windows?
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Aim for portrait panes roughly 1.5 times as tall as they are wide. Six-over-six suits windows about 900–1200mm wide; narrower windows suit two-over-two or three-over-three, and wider ones eight-over-eight. Send us your dimensions and we’ll suggest the pattern that looks right.
Are Georgian bars allowed on a listed building?
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Usually, but the bar type matters. On principal elevations of listed buildings and in conservation areas, solid through-bars are almost always required; applied bars may be accepted on rear elevations. Always check with your conservation officer. Our guide to listed building windows explains the consent process.
How much do Georgian windows cost?
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Georgian sash windows on weights start from £649+VAT in engineered pine with applied bars and double glazing, and on hidden springs from £699+VAT; the Georgian triple flush casement starts from £799+VAT. Solid bars add £100–200 per window and oak costs about 2.5× pine. See our timber window prices guide.
Get a Quote for Georgian Windows
Send your window sizes, bar type and pattern — not sure about proportions? Send the dimensions and we’ll suggest the layout that looks right. Detailed quote within 48 hours, plus profile drawings for conservation applications.
