Bespoke Supplier of Elegant UPVC Sash Window | Nexglazing
At NexGlazing, our sash windows blend timeless design with advanced performance. Crafted with two glazed panels known as ‘sashes,’ these windows operate vertically – either as single-hung (one movable sash) or double-hung (both sashes move). For added convenience, our sliding sash windows are also designed to tilt open, making cleaning easy and hassle-free.
Whether you live in a Georgian, Victorian, or Edwardian property, our expert team can help you replicate traditional aesthetics with the benefits of modern double glazing, enhanced energy efficiency, and improved security.
Choose from a wide selection of frame colours, materials, and design features to complement your home’s character. All our sash windows come with insurance-backed guarantees, including up to 10 years on frames, materials, parts, and labour, and up to 15 years on sealed glazed units.
Types of Sash Windows We Offer:
Georgian Sash Windows
Victorian Sash Windows
Edwardian Sash Windows
Benefits of uPVC Sash Window
Sash windows offer elegant aesthetics that suit period and heritage homes, especially Georgian, Victorian, and Edwardian styles.
Modern sash windows come with a tilt-in feature, allowing you to clean the exterior glass safely from inside your home.
Their vertical sliding mechanism makes sash windows ideal for rooms where space is limited—no need for outward or inward opening.
Double-hung sash windows allow you to open both top and bottom sashes, promoting better airflow and natural cooling.
Get a Free Quote Today – Speak to Our upvc Sash Window Specialists!
NexGlazing offers premium glazing solutions that blend style, performance, and durability. Specialising in aluminium, UPVC, and custom glass installations, we transform homes and commercial spaces with precision and care. From the initial design to final installation, our expert team ensures a seamless experience and lasting results.
Materials and Styles of Sash Windows
At NexGlazing, we offer sash windows in both timber and uPVC options — each designed to combine beauty, performance, and durability.
Timber Sash Windows
- Minimal upkeep with no repainting required
- Effective noise insulation and energy efficiency
- More affordable than timber options
- Practical tilt feature for easy cleaning
Aluminium Sash Windows
- Slim Sightlines – Enjoy more natural light with narrower frames.
- Modern Look – Ideal for both contemporary and transitional designs.
- Durability – Highly resistant to rust, warping, and weather damage.
- Low Maintenance – No painting or treating required.
Replacement of Sash Windows
We specialise in replacing windows in period and heritage properties, maintaining the original look while upgrading durability and performance. Plus, our sash windows come with long-term, insurance-backed guarantees for your complete peace of mind — including a 10-year guarantee on frames, parts, and labour, and 10–15 years on sealed glazed units.
Double Glazed Sash Windows by Nexglazing
Preserve the charm of your period home with our double glazed sash windows, crafted with engineered timber for long-lasting performance. These sash windows double glazed wooden options combine style and sustainability, Our double-hung UPVC sash windows are especially popular across London, seamlessly blending into the city’s unique mix of heritage and modern architecture. These windows slide vertically and feature decorative muntins that divide the panes or can be added for visual effect. With the latest spring-balanced mechanisms, our sash windows offer smooth, reliable operation and a clean, classic look.
Choose from a wide selection of colours and finishes to match any home style—from modern renovations to historic restorations. Both upper and lower sashes open for enhanced ventilation, and the tilt-in design makes cleaning effortless. Perfect for rooms facing patios, walkways, or tight exterior spaces, these windows offer ventilation without obstructing outside areas.
FAQ's
Sash windows operate by sliding one or both sashes vertically within the frame. They’re usually counterbalanced by hidden weights or spring-loaded mechanisms, allowing them to open and close smoothly without swinging outward or inward.
The “sash” refers to the movable part of the window that holds the glass panes. In a traditional sash window, this is typically a vertically sliding frame, either single or double (one or both sashes move).
The main difference lies in how they open. Sash windows slide vertically (or sometimes horizontally), while casement windows are hinged and open outward or inward like a door. Casement windows usually offer better ventilation, but sash windows provide a more traditional look and are ideal for period properties.
Yes, you can replace sash windows with casement windows, but it’s important to consider the architectural style of your property. In listed buildings or conservation areas, planning permission may be required to change window styles. Always check local regulations before making the switch.