Vertical Sliding Sash Windows
Traditional sash appearance with smooth operation and modern security
Vertical sliding sash windows are ideal for homeowners who want to retain the character of a traditional property while benefiting from modern window performance. Sumner Windows supplies and installs vertical sliding sash windows throughout Kent and the surrounding region.
They are especially popular for Georgian, Victorian and Edwardian properties, as well as cottages and townhouses, recreating the classic up-and-down sliding sash style while offering improved insulation, security and ease of use.
Modern sash windows use reliable spring or balance mechanisms for smooth operation and can include traditional features such as run-through horns, deep bottom rails and authentic glazing bar layouts.
Why choose Vertical Sliding Sash Windows
- Authentic traditional sash appearance
- Smooth, reliable sliding operation
- Improved insulation and security
- Low maintenance — no repainting required
- Sympathetic replacement for old timber sashes
Engineered for performance
- Spring or balance sliding mechanisms
- Run-through horns and deep bottom rails
- Ovolo detailing and glazing bar layouts
- Energy-efficient sealed double glazing
- Tilt-in cleaning options
Configurator
Mix and match colours, hardware and glass to suit your home.
Available finishes
Choose your style
- Traditional double-hung sash
- Single-hung sash
- Triple-light sash
- Bay sliding sash
Glass options
- Standard energy-efficient double glazing
- Slim heritage units for conservation areas
- Acoustic glazing
- Georgian bar options
Furniture & hardware
- Traditional sash fasteners and lifts
- Choice of brass, chrome and satin finishes
- Concealed restrictors
Engineered to protect
Security is built in as standard, with strong frames, modern multi-point locking and quality hardware. PAS24-rated and enhanced-security options are available where required, giving you peace of mind as well as improved comfort and kerb appeal.
Tailored to your home
We help you choose the right frame style, colour, glazing and hardware to suit your property and budget. Dual-colour options are available on many styles, allowing a different finish inside and out.
Property suitability
Especially popular for Georgian, Victorian and Edwardian properties, cottages, townhouses and homes in more traditional streets.
How we fit it
From your first enquiry to the final installation, Sumner Windows looks after the whole process. We start with a free site survey and accurate measurements, help you choose the right style, colour and glazing, then fit your new windows with our own experienced installers. Interiors are protected throughout and all waste is removed, leaving you with a clean, finished result.
Frequently asked
Do modern sash windows still slide like the originals? +
Can you match my existing sash details? +
Are they easy to clean? +
More uPVC Windows
Like the Vertical Sliding Sash Windows? Let's talk.
Free site visits across Kent and London — get in touch to discuss your project.