Bespoke New Sash Windows in a Sheffield Period Home

Bespoke Replacement Sash Windows for a Sheffield Period Home

For the owners of this period property in Sheffield, improving the warmth and comfort of their home was a priority. However, they were equally keen to preserve the traditional appearance and detailing of their timber sash windows.

Ventrolla was appointed to manufacture and install six new pairs of bespoke timber sashes, incorporating heritage double glazing while retaining the existing box frames.

The project covered several rooms across the property, including a study, bedrooms and bathrooms. Each replacement sash was designed to complement the original window openings, combining traditional joinery details with improved thermal performance and draught-proofing.

Six Pairs of Bespoke Sapele Hardwood Sashes

The project involved manufacturing and installing six new pairs of double-glazed sashes in Sapele hardwood, with the existing box frames retained and overhauled.

Each pair was manufactured to complement the property’s traditional architecture, incorporating Lamb’s Tongue mouldings, solid 26mm glazing bars and bespoke sash horns. These details helped maintain the proportions and appearance of the original windows.

The new sashes were finished internally and externally in Teknos Standard White, with polished brass Brighton sash fasteners, sash lifts, restrictors and locking hardware completing the traditional detailing.

By replacing the sashes rather than the complete window assemblies, Ventrolla was able to introduce modern glazing performance while retaining the surrounding timber box frames.

Heritage Double Glazing and Draught-Proofing

All six pairs of replacement sashes incorporated argon-filled heritage double-glazed units with K Glass, improving thermal performance while maintaining the appearance of traditional timber sash windows.

Alongside the glazing upgrades, Ventrolla installed its Perimeter Sealing System (VPSS) throughout, helping to reduce draughts and improve comfort within the home.

The windows also incorporated Ventrolla’s Sash Removal System (SRS), allowing the upper and lower sashes to be removed more easily for future maintenance and decoration.

Together, these features provide the homeowners with the benefits of newly manufactured double-glazed sashes while retaining the character of the existing window openings.

Retaining the Existing Timber Frames

Although all six pairs of sashes were replaced, the project also involved careful work to the existing timber box frames.

Two second-floor windows, located in a bedroom and bathroom, required resin repairs to sections of their timber cills. These targeted repairs addressed localised deterioration while preserving the surrounding joinery.

Each window opening also received an overhaul alongside the installation of the new sashes, ensuring the existing frames were prepared to accommodate the replacements.

This approach allowed Ventrolla to renew the moving sections of the windows while retaining original timber wherever practical.

A Considerate Five-Day Installation

With six pairs of sash windows being replaced across several rooms and floors, the homeowners were particularly appreciative of the care taken during the installation.

The Ventrolla team completed the work over five days, working considerately and efficiently throughout.

The homeowners praised the attention given to cleaning and tidying each room following the work, as well as the time taken to explain the new window systems.

The installers demonstrated how the sashes could be removed for future maintenance and provided guidance on ongoing care and decoration.

“We were very impressed with their clearing up and cleaning in each room after the job and making the whole process as stress free as possible.”

The customer also highlighted the team’s clear explanations and professional approach throughout the installation.

Traditional Appearance, Improved Everyday Comfort

The completed project has introduced six pairs of bespoke heritage double-glazed replacement sashes to this Sheffield property, combining traditional timber detailing with improved thermal performance and draught protection.

With polished brass ironmongery, carefully matched mouldings and targeted repairs to the existing frames, the new sashes complement the property’s original architecture.

The project demonstrates how replacing traditional timber sashes within existing box frames can improve window performance without requiring complete window replacement.

Bespoke Timber Sash Window Replacement in Sheffield

Ventrolla specialises in the restoration, renovation and bespoke replacement of traditional timber sash and casement windows in Sheffield, across South Yorkshire and throughout the UK.

Whether replacing individual sashes within existing frames or manufacturing complete new timber windows, our approach focuses on preserving architectural character while improving comfort, performance and longevity.

For more information about our bespoke timber sash windows and heritage glazing services, visit ventrolla.co.uk or contact our team on 0800 0277 454.