Heritage Sash Window Replacement for a Listed Home in Walcott, London

Heritage Sash Window Replacement for a Listed Home in Conservation Area, Walcott, London

For the owners of this listed property, upgrading their traditional sash windows was about more than improving warmth and comfort. It was equally important that any new windows complemented the architectural character of their home and remained sympathetic to its protected setting.

The homeowners chose Ventrolla to manufacture and install new bespoke timber sash windows incorporating heritage double glazing, combining traditional joinery details with improved thermal performance.

With the property situated within a conservation area, the project required a considered approach to the design, materials and finish of each window, ensuring the replacements remained in keeping with the building’s historic appearance.

Eight Pairs of Bespoke Timber Sash Windows

Ventrolla was appointed to manufacture and install eight new pairs of sash windows in Sapele hardwood, incorporating heritage double-glazed units throughout.

Rather than opting for standard replacement windows, each pair of sashes was made to suit the property’s existing window openings and traditional appearance. The designs featured multiple panes with solid 26mm glazing bars, Lamb’s Tongue mouldings and bespoke sash horns, retaining the distinctive detailing associated with traditional timber sash windows.

The work also included an overhaul of the existing window frames, with replacement timber cills where required to address deterioration and provide a sound foundation for the new sashes.

Each window was finished in Magnolia, carefully colour-matched to a sample provided by the homeowner, ensuring a consistent appearance across the property. Polished brass Brighton sash catches, sash lifts and restrictors completed the traditional detailing.

Improving Performance While Preserving Character

Alongside the new timber sashes, Ventrolla incorporated heritage double glazing to improve the performance of the windows without significantly altering their traditional appearance. The majority of the new sashes featured argon-filled heritage double-glazed units with K Glass, while satin glazing was specified for one window to provide additional privacy.

Each window was also fitted with Ventrolla’s award-winning Perimeter Sealing System (VPSS), helping to reduce draughts and improve comfort throughout the property.

Ventrolla’s Sash Removal System (SRS) was incorporated to make future maintenance more straightforward, allowing the sashes to be removed without disturbing the surrounding window structure.

Together, these upgrades provided the homeowners with improved thermal performance and easier ongoing maintenance, while retaining the proportions, glazing patterns and traditional detailing appropriate to the listed property.

A Result That Feels at Home

The completed installation has given the property eight pairs of beautifully detailed timber sash windows, combining the appearance of traditional joinery with the benefits of modern heritage glazing.

The homeowners were particularly pleased with how naturally the new windows complement the character of their home, as well as the care and professionalism shown by the Ventrolla team throughout the project.

From the initial organisation and communication through to the installation itself, the customer described the experience as fantastic from start to finish.

“A fantastic experience from start to finish with Ventrolla. We had Heritage glazed sash windows installed and couldn’t be happier with the results. The windows look beautiful and perfectly suit the character of the house.”

The customer also praised the team’s excellent workmanship and professionalism, highlighting the positive experience of working with Ventrolla throughout the project.

Specialist Timber Windows for Listed Buildings

Upgrading windows in a listed property requires careful consideration of both their historic appearance and everyday performance.

Ventrolla specialises in the restoration, renovation and bespoke replacement of traditional timber sash and casement windows, working with homeowners to identify solutions appropriate to their property’s age, character and conservation requirements.

Whether restoring original joinery or manufacturing new heritage double-glazed sashes, our approach prioritises retaining architectural character while improving comfort, performance and longevity.

For more information about our heritage window services, visit ventrolla.co.uk or contact our team on 0800 0277 454.