Bespoke bay window with three timber sashes, enriching period charm, energy efficiency, and acoustic insulation.


Full installation of custom timber sash windows and polished chrome fittings throughout a converted Victorian townhouse in South West London.
Featured Ranges in Our Clapham Installation
The bay window at the front of the property featured a three-part design, with each window custom-crafted to match the property’s period detailing. This bespoke design maintained the original proportions of the bay while providing the benefits of modern performance.
Finished in RAL 9016 (standard white), the bay window maintained a timeless appearance that complemented the building’s facade. Polished chrome ironmongery, including sash fasteners and lift hooks, added a contemporary yet classic touch, ensuring the fittings were both durable and aesthetically aligned with the overall design.
In addition to the bay window, three single timber sash windows were installed throughout the flat. Each window was fully customisable, allowing for seamless integration with the property’s period aesthetic. Secure locking mechanisms were installed for added peace of mind, ensuring a balance of elegance and security.

Timber Sash Windows Installed in Clapham
This project in Clapham, South West London, involved converting a Victorian townhouse into a modern flat, requiring a bespoke window installation that retained the property’s period elements. We installed a bay window with three timber sash windows and three additional single sash windows, all designed to match the original architectural features—an ideal solution for homeowners seeking sash windows in Clapham.
Project Details & Challenges
A major project component was replacing the bay window at the front of the property with three new timber sash windows, and installing three additional single sash windows throughout the flat. The windows needed to match the original design in terms of size, proportions, and decorative elements while offering modern benefits such as better insulation and draught-proofing.
One of the primary challenges was fitting the new sash windows into the existing bay window frame without compromising its structure. Ensuring consistency across the bay window and single sash windows was essential to maintain a uniform look throughout the property.
The Properties in Clapham, South West London
Clapham is known for its diverse architectural styles, ranging from grand Victorian and Edwardian townhouses to charming Georgian terraces and modern developments. Many streets in Clapham feature period properties with distinctive features such as sash and casement windows, decorative brickwork, and traditional bay windows.
Victorian townhouses, often characterised by large bay windows and ornate detailing, are common in areas like Clapham Old Town and Abbeville Village, while Georgian homes with their symmetrical facades and elegant proportions can also be found throughout. Converted flats within historic buildings are also a staple of the area.
The demand for timber sash windows and bespoke window installations remains high in Clapham. The blend of old and new makes Clapham a sought-after location for families, professionals, and those looking to invest in properties that combine history with contemporary living.
Energy Efficient Benefits
We prioritise sustainability and energy efficiency in every installation. The timber sash windows installed in this Clapham flat conversion were crafted from FSC-certified timber, ensuring the wood was sourced from responsibly managed forests that prevent illegal logging and deforestation.
Timber’s natural insulating properties help reduce heat transfer, keeping homes warmer in winter and cooler in summer. This supports a reduction in heating bills and promotes more sustainable living.
The windows were also fitted with panes made by Saint-Gobain Glass, named as one of the greenest companies in the UK by the Sunday Times.
Why Clapham Homes Choose Sash Windows London
We have extensive experience in full sash window replacements and bespoke installations across Clapham and South West London, making us a trusted choice for homeowners restoring or upgrading period properties. Our team combines traditional joinery techniques with modern glazing technology to deliver timber sash windows that offer exceptional durability, energy efficiency, and timeless appeal.
Our commitment to quality craftsmanship is evident in every project, from replicating intricate period details to ensuring a seamless fit. We pay close attention to every element, from timber finishes to ironmongery. We also prioritise personalised service, guiding you through each stage – from initial consultation to completion.
And as a FENSA-certified company, we guarantee compliance with the latest building regulations, giving you peace of mind that your windows meet high performance and safety standards.
Update Your Victorian Sash Windows

If you’re a homeowner in Clapham or South West London looking for high-quality wooden windows, our team of experts and designers is here to help. We specialise in bespoke sash window replacements and full installations, combining period charm with modern energy efficiency. Get in touch today for a free, no-obligation consultation.