Sliding Sash Windows
Double Glazed Sliding Sash Windows
Sliding sash windows are the perfect choice for homeowners who love traditional character but want the comfort, energy efficiency and security of a modern double glazed system. At Windows Xpress, we supply and install uPVC sliding sash windows that replicate the timeless look of Victorian and Georgian timber sash windows, without the maintenance headaches or high running costs.
Available to both homeowners and trade customers, our sliding sash windows deliver smooth operation, slim sightlines, superb insulation and long-lasting durability. Whether you’re upgrading an older property or adding period charm to a modern home, our sash window systems offer a stylish, practical and energy-efficient solution.
What Are Sliding Sash Windows?
Sliding sash windows feature two movable sashes that slide vertically within the frame. Historically made from timber, modern uPVC sliding sash windows offer the same elegant proportions but with improved insulation, security and ease of use.
Unlike outward-opening casement windows, sash windows are ideal for homes that want a traditional appearance while saving space around the exterior. Each sash glides smoothly on balance mechanisms and can be tilted inwards for easy cleaning, perfect for upper floors or hard-to-reach areas.
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Benefits of Sliding Sash Windows
Authentic Period Style With Modern Performance
Combining heritage charm with new technology, our sash windows include details such as run-through sash horns, sculpted frames and slim meeting rails. They suit everything from Victorian and Edwardian homes to modern new builds looking for a touch of timeless style.
Energy-Efficient Double Glazed Sash Windows
Our double glazed sliding sash windows are engineered to keep heat indoors and draughts out. With multi-chambered uPVC profiles, warm-edge spacer bars and high-performance sealed units, these windows help maintain comfortable temperatures all year round and can reduce heating bills.
Smooth, Easy-to-Use Sliding Mechanism
Unlike old timber sashes that stick, warp or rattle, modern balance systems ensure a smooth sliding motion every time. Both sashes can also tilt inwards, making cleaning the outside of the window simple and safe.
Safe, Secure & Low Maintenance
uPVC sash windows are built to last, with reinforced frames, secure locks and weather-resistant materials that never need repainting. They won’t rot, swell or fade, giving your home long-term security and performance with minimal upkeep.
Perfect for Traditional or Conservation-Look Homes
Even if you live in a modern property, sliding sash windows add charm and character. They’re a popular choice for homeowners wanting a heritage look without the cost or maintenance of timber.
Why Choose uPVC for Sliding Sash Windows?
uPVC sliding sash windows offer a range of benefits that make them an excellent alternative to traditional timber. Unlike wood, uPVC will never rot, warp or swell, giving you a much longer lifespan with minimal upkeep. The multi-chambered frame design provides outstanding insulation, helping your home stay warmer and more energy-efficient throughout the year. They also require virtually no maintenance, no sanding, painting or sealing. Making them a practical, low-hassle choice for busy homeowners.
uPVC sash windows are also more cost-effective than timber and come with reinforced frames for improved security. Altogether, a uPVC sliding sash window is a smart investment that delivers long-term durability, thermal performance and classic style without the drawbacks of traditional materials.
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Contact UsWhat is a sliding sash window?
A sliding sash window is a vertical-opening window where one or both sashes slide up and down within the frame. Unlike casement windows, they don’t open outward, making them ideal for tight spaces or traditional-style homes. Modern uPVC sliding sash windows replicate classic timber aesthetics while offering better insulation and smoother operation.
Are uPVC sliding sash windows energy-efficient?
Yes, our double glazed sash windows use multi-chamber uPVC frames and insulated glazing to reduce heat loss and eliminate draughts. This makes them far more energy-efficient than traditional timber sashes and helps keep your home warm, quiet and comfortable.
Can you replace my old wooden sash windows?
Absolutely. We regularly replace older timber sashes with modern double glazed sliding sash windows, maintaining the original style while upgrading insulation, security and durability. We can match existing bar patterns and frame designs to retain your home’s character.
Do sliding sash windows meet building regulations?
Yes, all our uPVC sash windows comply with current building regulations, including thermal performance, safety and ventilation requirements. If you're replacing windows in a listed-style or traditional property, we can advise on the best approach.
Do you supply sliding sash windows to trade?
Yes, we offer a supply-only service to builders, developers and installers across East Sussex and beyond. Our sash windows are made to measure, competitively priced and available with fast turnaround times.
How long do uPVC sash windows last?
With proper care, uPVC sliding sash windows can last 25–35 years or more. Unlike timber, they won’t warp, rot or crack and the double glazed units are designed for long-term performance.
