These Georgian sash windows recreate the elegant multi-pane look of eighteenth-century townhouses. A full grid of astragal bars divides both sashes into small, evenly balanced panes — the defining feature of genuine Georgian box sash windows. Built on a traditional weights system and made to order in the UK, prices start from £649+VAT.

The classic Georgian bar grid

Unlike a plain sash or a single glazing bar, this window carries astragal bars running both horizontally and vertically across each sash, creating the familiar six-over-six style associated with Georgian architecture. The grid keeps its proportions whatever size the window is made to, so a whole façade reads consistently. It is the natural choice for Georgian-style properties, conservation areas and streets where planners expect a faithful period appearance.

A genuine box sash on weights

Behind the frame, cast counterweights balance each sash so both glide smoothly and rest at any height — the same mechanism used when these houses were first built, which is why surveyors and conservation officers favour it. Browse the full range of timber sash windows on weights, and choose engineered pine, meranti or oak, glazed to a U-value of 1.4 W/m²K in line with Building Regulations.

• Full Georgian astragal bar grid for an authentic multi-pane period look.
• Traditional box sash on weights — the original, conservation-friendly mechanism.
• Energy-saving glass with a U-value of 1.4 W/m²K, certified to Building Regulations.
• Warm Edge Spacer Technology to improve insulation and reduce condensation.
• Decorative horns and a flush-to-frame hardwood sill for accurate detailing.
• Choice of engineered pine, meranti or oak timber.
• Finished in any RAL or Farrow & Ball colour with a 7-step painting process.
• Fully draught-sealed with a complete set of standard ironmongery.

Frequently asked questions

What makes a sash window Georgian?

The grid of astragal glazing bars. A Georgian sash is divided into multiple small panes — typically six per sash — rather than a single sheet of glass. This window reproduces that layout with slim timber bars over modern sealed glazing, so the period look comes with current thermal performance.

Should I choose weights or springs for a Georgian sash?

Weights are the historically correct choice, ideal where authenticity matters most. If your wall depth is limited or you prefer a slimmer frame, we also make a Georgian sash window on hidden springs with the same astragal grid.

Are these suitable for listed buildings and conservation areas?

The weighted box sash mechanism and timber astragal bars make this window well suited to sensitive settings. See our guidance on replacing windows in listed buildings, and always confirm requirements with your local authority.

How much do Georgian sash windows cost?

This Georgian box sash window on weights starts from £649+VAT. The final price depends on size, timber choice, glazing and colour — request a quote and we will price your exact specification.