Premium Manufacturing & Installation for Developers and Architects
Sash Windows London specialises in heritage and listed properties, supporting clients across the capital for more than 20 years. Our experienced team provides expert guidance at every stage of your project, whether you’re an architect or contractor.
Our Timber Windows & Doors
All of our timber windows and doors are crafted in our UK workshop using state-of-the-art technology and meticulous attention to detail. We offer a comprehensive range of products, including timber sash windows, timber casement windows, and a full selection of timber external doors.
From technical advice and CAD design to project planning, manufacturing, and installation, we deliver a complete end-to-end service. As a FENSA-registered company, all installations come with a 10-year insurance-backed warranty provided by Installsure.
Our Services
01 Commercial and residential
02 Surveying and CAD
03 Technical support
04 Project management
05 Supply only or supply and fix option
06 Health and safety certification
07 Cornwall-based factory
08 10-year insurance-backed warranty on installations
09 Constructionline accredited
Our Products
Perfect for period properties, our timber sash windows are crafted from high-quality, sustainably sourced timber. These windows offer excellent durability, energy efficiency, and sound insulation.
For a high-performance window that preserves your home’s historic charm while offering modern glazing benefits, our timber sash windows are the ideal choice. They combine traditional aesthetics with contemporary performance seamlessly.
Enhance your home with our timber casement windows, which are perfect for modern and period properties. These versatile, stylish windows offer advanced energy efficiency, reducing draughts and heating costs while dampening exterior noise. Available in various configurations, including lipped and flush-fit designs, they blend traditional aesthetics with modern double-glazing benefits.
With multi-point locking systems and shoot bolts, they ensure top-tier security. Ideal for heritage sites and conservation areas, our timber casement windows combine timeless charm with cutting-edge performance.
Add light to any space with our French door collection. Available in timber, uPVC, or aluminium heritage styles, they’re ideal for garden access, Juliet balconies, or period property refurbishments. Flush and lipped profiles available to suit both conservation and contemporary needs.
Built for character-rich homes, our timber entrance doors come in Classic, Heritage and Creative styles. Each door is bespoke and can be matched to your property’s original features or designed as a statement piece. Ideal for Georgian, Victorian or Edwardian homes.
Peace of Mind Assured With Our Range of Warranties
We understand the essentials of high-quality Timber, designing our range for long-term use, whether installed in a traditional countryside property or a modern urban home.
By combining a classic design with the latest in security and energy efficiency, we can provide a durable, high-strength product every time. We believe in underlining this commitment to quality with several clear warranties.
30-year guarantee on timber
10-year guarantee on Paint finish
5-year warranty on ironmongery & seals
10 years on Workmanship
10 years on Glazing
Why Choose Us?
Sash Windows London specialises in providing excellent timber windows & doors for a variety of properties. We’ve built a sterling reputation over nearly two decades, thanks to our bespoke products, lasting product performance, and our friendly team.
Excellent Service
We’re proud to hold a fantastic reputation with our customers, holding a 4.7 average on Trustpilot. As a family-run company, we understand the importance of being friendly, helpful, and upfront every time. We hold a string of accreditations, from British Safety Council, FENSA, and more.
Bespoke Products
Especially when dealing with older properties, it’s crucial to provide windows & doors that are built to meet precise dimensions. Each of our timber products is made-to-measure in the UK, ensuring a great look and snug fit regardless of your property.
Fantastic Quality
We aim for nothing less than exceptional quality in every window we produce, backed up by a range of warranties on frames, glazing, and ironmongery. Our timber windows & doors are designed to fit the aesthetics of a traditional property while offering high-end insulation, security, and durability.
