We’re excited to introduce our brand-new uPVC Vertical Sliding Window, a product designed to bring together the traditional charm of classic sash windows with the durability, efficiency, and reliability of modern manufacturing. Whether you’re renovating a period home or upgrading a contemporary property, this window offers the ideal balance of heritage aesthetics and cutting-edge performance.
A Fresh Take on a Timeless Design
Traditional sash windows have always had a distinctive appeal, but they can often come with the challenges of high maintenance, draughts, and poor thermal performance. Our new vertical sliding window eliminates those drawbacks while keeping the look that homeowners and developers love.
With a strong uPVC frame, precision-built sliding mechanisms, and a wide choice of glazing options, this window offers the authentic appearance of a classic sash with all the benefits of modern engineering.
Designed for Performance
Impressive Energy Efficiency
The multi-chambered uPVC profile paired with high-performance glazing helps reduce heat loss, maintain indoor warmth, and contribute to lower energy bills. This makes the window suitable for modern standards of insulation without compromising on style.
Smooth and Reliable Sliding Operation
The advanced vertical sliding system ensures smooth, controlled opening and closing of both sashes. It enhances ventilation, allowing warm air to escape at the top while cooler air enters at the bottom, helping maintain a balanced indoor environment.
Low Maintenance and Long-Lasting
Unlike timber sash windows that require ongoing painting and upkeep, our uPVC vertical slider resists rot, swelling, fading, and warping. Routine cleaning is all that’s needed to keep them looking new for years.
Security You Can Rely On
With high-security locks and robust frame construction, the window provides strong protection against forced entry. You get the character of a heritage window without compromising on security standards.
Technical Specifications That Elevate Performance
Our vertical sliding window is built with high-performance features that enhance efficiency, security, and everyday usability. With U-values as low as 1.4 W/m²K, the window delivers excellent thermal insulation, helping maintain a comfortable indoor environment all year round. It comes with 22mm double-glazed Low-E glass as standard, ensuring improved energy efficiency while reducing heat loss. For added protection, top sash security bolts provide extra peace of mind without affecting the classic sash-window appearance. The system is also Kubu-enabled, offering optional smart connectivity so you can monitor your window status from your phone for enhanced security and convenience.

Customisable to Your Home
We understand that every property is different, which is why our vertical sliding windows are fully made to measure. You can choose from:
- A wide selection of colours and woodgrain finishes
- Double or triple glazing
- Decorative glazing options
- Hardware styles to suit both period and modern homes
This customisation ensures you can achieve the exact aesthetic and performance you need, whether you’re matching existing windows or creating a new feature altogether.
Where Vertical Sliding Windows Work Best
Heritage and Period Homes
If you’re restoring or updating a property with original sash windows, this modern vertical slider allows you to preserve the traditional look while upgrading to modern efficiency. The clean lines and classic proportions make it a perfect fit for older homes where architectural character is important.
Modern Builds and Extensions
Vertical sliders are not just for traditional homes. Their sleek, symmetrical design suits modern interiors and contemporary extensions, adding elegance without feeling out of place.
Properties with Limited Exterior Space
Because the sashes move vertically instead of opening outwards, these windows are ideal for homes that face narrow streets, tight garden areas, or neighbouring properties. You get full ventilation without needing extra room outside the frame.
Homes That Need More Light and Fresh Air
The large glass area and ability to open both sashes helps brighten darker rooms and improve airflow. This makes them especially useful in kitchens, bathrooms, and living spaces that benefit from enhanced natural light.
Why Choose Our Vertical Sliding Window
By launching this new product, we’re offering a window solution that:
- Preserves the charm of traditional sash windows
- Delivers modern standards in thermal performance and security
- Requires minimal maintenance
- Fits seamlessly into both period and contemporary homes
- Maximises natural light and ventilation
- Can be fully customised to suit your exact project
This vertical sliding window is more than a product launch, it’s a modern answer to a classic design challenge.
Final Thoughts
Our new uPVC Vertical Sliding Window provides the perfect blend of heritage style and modern performance. Whether you’re refreshing the look of a period property or adding character to a new build, it offers long-lasting quality, versatility, and timeless beauty.
At QUAD, we’re proud to manufacture vertical sliding windows that balance traditional elegance with modern innovation. If you’re looking for a sash-style window that delivers high performance, custom design options, and long-term reliability, our team is here to help bring your project to life. Get in touch today on 01782 340 111 for more information, or become a partner here.