Whether you're restoring a period property or designing a modern build, flush casement windows offer the perfect balance of elegance, performance, and versatility.
At Mumford & Wood, we craft premium Flush Casement windows from engineered timber, designed for long-lasting performance and tailored to suit both traditional and contemporary architecture.
What Is a Flush Casement Window?
A flush Casement Window is defined by its clean, uniform profile. When closed, the window sash sits flush with the outer frame, creating a smooth, flat surface. This differs from standard Casement windows, where the sash typically overlaps the frame.
The result? A streamlined, minimal aesthetic that works beautifully across a variety of property styles — from classic cottages to sleek, modern extensions.

Standout Features of Flush Casement Windows
- Seamless, Flat Finish: The hallmark of Flush Casement design is its smooth exterior with no projecting sash, offering a refined appearance that complements both heritage and modern homes.
- Exceptional Thermal Performance: With advanced glazing and high-specification seals, these windows provide enhanced insulation, contributing to lower energy bills.
- Elegant Timber Construction: At Mumford & Wood, our Flush Casement windows are manufactured using multi-layered European Redwood, finished with a durable three-coat microporous paint system.
- Discreet, Robust Security: Every unit is fitted with multi-point locking mechanisms as standard, offering peace of mind without compromising on appearance.
Why Choose Flush Casement Windows?
Timeless Design Versatility: Whether your home is Georgian, Edwardian, or a contemporary build, Flush Casement windows offer a universal aesthetic that blends into its setting without distraction.
Low-Maintenance Timber: Thanks to precision engineering and high-quality finishing, our timber Flush Casement windows are designed to withstand the elements with minimal upkeep.
Improved Insulation & Weather Sealing: Tight seals and quality materials reduce draughts and heat loss, particularly valuable in the UK's variable climate.
Tailored to Your Property: Choose from a wide range of colours, stains, glazing styles, and ironmongery options, all made to order to match your project's requirements.

Ideal Applications for Flush Casement Windows
Flush Casement windows are incredibly adaptable and are commonly chosen for:
- Period Properties: They preserve traditional charm while discreetly delivering modern efficiency and security.
- New Builds: Their clean lines and understated elegance make them an ideal fit for contemporary architecture.
- Conservation Areas & Listed Buildings: Our bespoke service includes sympathetic ‘like-for-like’ replacements for heritage and listed homes, combining authenticity with upgraded performance.
Why Mumford & Wood?
Every Flush Casement window from Mumford & Wood is crafted to order using sustainably sourced materials and time-honoured joinery techniques. With a focus on precision, performance, and personalisation, we ensure your windows not only look stunning but also stand the test of time.
Start Your Project With Us
Download the Mumford & Wood brochure to explore our full collection of made-to-measure timber windows and doors, or request a personalised quote from our team. Whether you're enhancing a heritage property or designing your forever home, our Flush Casement windows offer lasting beauty and outstanding performance.


















