Sliding Sash Windows
Sliding Sash Windows
Classic Sliding Sash Windows with Modern Performance
Sliding sash windows feature two vertically sliding panels (sashes) that move smoothly within the frame. Traditionally made from timber, modern uPVC sash windows maintain the same classic appearance while delivering far better thermal efficiency, security and ease of use.
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Claim 10% Off Supply & FitWhat Are Sliding Sash Windows?
Sliding sash windows feature two vertically sliding panels (sashes) that move smoothly within the frame. Traditionally made from timber, modern uPVC sash windows maintain the same classic appearance while delivering far better thermal efficiency, security and ease of use.
Unlike outward-opening casement windows, sliding sash windows don’t intrude into external spaces, making them ideal for period homes, bay windows and properties where maintaining original character is important.
Both sashes can tilt inwards for safe and easy cleaning. This is particularly useful for upper floors.
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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.
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.
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.
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 are a modern alternative to traditional timber, offering the same classic appearance with far better performance.
- Longer lifespan – uPVC will never rot, warp or swell, even in harsh weather conditions
Excellent thermal performance – multi-chambered frames help keep your home warmer and more energy-efficient all year round
Improved security – reinforced frames and modern locking systems provide added peace of mind
Lower overall cost – a more affordable option than timber, both upfront and over time
Virtually zero maintenance – no sanding, painting or sealing required
Our uPVC sliding sash windows form part of our wider uPVC window range and can also be compared with aluminium windows for homeowners considering different 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.
