Flush Sash uPVC Windows
Timber-style flush appearance with modern energy efficiency and security
Flush sash uPVC windows are a beautiful choice for homeowners who want the character of traditional timber windows with the low-maintenance benefits of modern uPVC. Sumner Windows supplies and installs flush sash uPVC windows across Kent and the surrounding region.
The flush sash design means the opening sash sits neatly within the outer frame, creating a flatter and more elegant appearance. This gives the window a premium look that is especially popular for cottages, older homes and conservation-style projects.
Flush sash windows also work extremely well on modern homes when specified in Anthracite Grey, Black or aluminium-look finishes, while still offering the insulation and value of uPVC.
Why choose Flush Sash uPVC Windows
- Elegant flush, timber-style appearance
- Premium look for period and modern homes
- Reduced draughts and improved thermal efficiency
- No repainting, sanding or regular treatment
- Available in heritage and contemporary colours
Engineered for performance
- Sash sits flush within the outer frame
- Suited to cottages, period homes and conservation areas
- Realistic timber-effect foil finishes
- Energy-efficient sealed double glazing
- Optional Georgian/astragal bars
Configurator
Mix and match colours, hardware and glass to suit your home.
Available finishes
Choose your style
- Flush side-hung casement
- Flush top-hung casement
- Fixed flush light
- Cottage multi-light
Glass options
- Standard energy-efficient double glazing
- Slim units for a heritage look
- Acoustic glazing
- Obscured glass for privacy
Furniture & hardware
- Multi-point locking
- Heritage monkey-tail and cottage handle options
- Trickle vents where required
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 cottages, older homes, conservation-style projects and properties where standard uPVC windows may look too bulky — and equally at home on contemporary properties.
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
What is a flush sash window? +
Are flush sash windows suitable for conservation areas? +
Do they work on modern homes too? +
More uPVC Windows
Like the Flush Sash uPVC Windows? Let's talk.
Free site visits across Kent and London — get in touch to discuss your project.