Authentic Style
Traditional proportions, deep bottom rails and classic detailing recreate the elegant look of original wooden sash windows.
Smooth
Sliding
Precision-engineered balances allow the sashes to glide smoothly and stay securely in position for easy ventilation.
Energy Efficient
Multi-chamber REHAU profiles and modern double glazing help keep your home warmer and more comfortable.
Why Choose uPVC Sliding Sash Windows?
uPVC sliding sash windows offer the charm of traditional wooden sash windows while delivering the reliability and efficiency expected in a modern home.
- A-rated as standard.
- Thermally efficient.
- Fully made to measure.
- Wide range of colours.
- Fully featured sculptured profiles.
- Tilt inwards for easy cleaning.
- Run through sash horns as standard.
- Georgian or astragal bar finish available.
- Comprehensive 10-year guarantee on all parts.
- Optional upgrades available- anti-jemmy bar, deep bottom rail and child restrictors.
- Reinforced with aluminium and galvanised steel.
Double Glazed Sash Windows for Energy Efficiency
Traditional sash windows were rarely known for their insulation. Modern uPVC sash windows change that completely. With advanced double glazing and multi-chamber profiles, they are designed to reduce heat loss and eliminate the draughts that are often associated with older timber windows.
The result is that your home feels warmer in winter and more comfortable throughout the year. Improved thermal performance can also help reduce energy use, making double glazed sash windows a practical upgrade for homeowners who want to retain traditional style while improving efficiency.
A Modern Replacement for Timber Sash Windows
If your home still has its original timber sash windows, you may already be familiar with the small frustrations that come with them. Draughts, sticking sashes, peeling paint and regular maintenance are all common with older timber frames.
Modern uPVC sash windows offer a practical solution while keeping the traditional character of your property. The proportions, sash horns and glazing bar options recreate the familiar look of classic timber sash windows, so the appearance of your home remains unchanged.
At the same time, you gain the benefits of modern materials and engineering. The windows slide smoothly, help reduce draughts and require very little maintenance, allowing you to enjoy the style of traditional sash windows with the comfort and reliability expected today.
Peace of Mind
Proud to be registered with CERTASS, the leading fenestration authority in the UK.
Experienced
Prior Products is a family business that has been delighting homeowners for over 36 years.
10 Year Guarantee
Our commitment to quality is supported by a comprehensive 10-year guarantee and is insurance-backed
Sash Bay Windows
Bay windows are a beautiful feature in many period homes and are often fitted with traditional sash windows.
Sash bay windows sometimes use box sash windows, where the frame sits within a deeper box structure that houses the sliding mechanism. Modern versions recreate this traditional appearance while using advanced balances and double glazing for smoother operation and better insulation.
Vertical sliding sash windows are particularly well suited to bay windows because they allow ventilation without projecting outward. This keeps the elegant lines of the bay while allowing you to control airflow throughout the room.
In Victorian homes, Victorian sash windows are commonly found in bay window arrangements with larger panes of glass and decorative detailing. Earlier properties often feature Georgian sash windows, typically with smaller panes arranged in a classic grid pattern. Sliding sash windows can be designed to replicate these styles so that replacement windows remain in keeping with the age and character of the property.
Design Options for Sash Windows
Modern uPVC sash windows offer a wide range of design choices, so the finished windows complement both the property's architecture and your personal preferences.
Frame finishes are available in a variety of colours, including traditional white and popular woodgrain effects that replicate the appearance of painted timber. Coloured frames can also be chosen to suit different property styles, allowing you to create a more distinctive look while still keeping the proportions of traditional sash windows. Chartwell Green and Agate Grey are popular in Stratford-upon-Avon.
Glazing options can also be adapted for different rooms. Obscure glass is often used in areas such as bathrooms or hallways where privacy is important, allowing natural light into the room while preventing clear visibility from outside. Obscure glass with patterns or stained glass can also be used for privacy on street-facing windows.
Decorative details such as Georgian or astragal bars and sash horns also help to recreate the character of traditional style windows.
What are Sash Windows?
uPVC sash windows are modern versions of traditional sliding sash windows. They are designed to recreate the appearance and proportions of classic timber sash windows while using durable uPVC frames and energy efficient double glazing.
Instead of being hinged like casement windows, sash windows open by sliding vertically. The two sashes move smoothly within the frame, allowing you to control ventilation by opening the top, the bottom or both.
If your home has older timber sash windows, modern uPVC sash windows offer a practical replacement. They maintain the traditional look of the property while improving insulation, security and ease of use, and they require very little maintenance compared with painted timber frames.
How Long do uPVC Sash Windows Last
Our uPVC sash windows are built to last. They are guaranteed for ten years, but you'll see windows that have been going strong for over twenty years. If they are changed it's not because of the quality. It's because there have been changes in technology.
Because we manufacture in our own factory, we control every aspect of quality, from timber windows alternatives to the whole window construction. Each installation comes with comprehensive warranty coverage for complete peace of mind.
Can uPVC Sash Windows be Installed in Conservation Areas?
You must check the conservation rules in your area, but, yes, sash windows are often the preferred choice for homes in conservation areas where modern replacement is permitted because they reflect the traditional window styles found in many historic properties.
Modern uPVC sliding sash windows are designed to replicate the proportions and detailing of original timber sash windows, helping homeowners maintain the character of their property.
Features such as sash horns, Georgian or astragal glazing bars and woodgrain finishes allow replacement sash windows to closely match the appearance of traditional timber frames. This makes them a suitable option for many period homes where preserving the external appearance of the building is important.
If your property is located in a conservation area, it is always advisable to check with the local planning authority before replacing windows. In many cases, carefully designed sash windows can provide the traditional appearance required while also improving insulation, security and everyday comfort.
Is Finance Available for Sash Windows?
Yes. Prior Products offers flexible finance options including 0% interest finance to help make premium quality sash windows more accessible. This allows you to spread the cost of your new uPVC sash windows over manageable monthly payments rather than paying the full amount upfront.
Finance can be a convenient way to invest in improving your home’s energy efficiency, comfort and appearance while keeping control of your budget. Our team will be happy to explain the available options and help you find a payment plan that suits your circumstances.
If you would like to learn more, you can discuss finance during your home survey or when visiting our showroom.
Can Sash Windows be Replaced With Casement Windows?
Yes, you can replace sash windows with casement windows. If you are renovating your home or replacing older windows, you may be considering whether to keep the traditional sash style or move to a more modern casement design.
Casement windows are very popular because they are simple to operate, highly energy efficient and flexible in how they are designed. They can work well on many types of property.
Modern uPVC sliding sash windows allow you to retain the traditional character of your property while benefiting from improved insulation, security and smooth operation.
If you are considering replacing your windows, we can help you compare sash and casement styles during your home survey so you can choose the option that best suits your home.
How Are Modern Sash Windows Different?
Older sash windows were typically made from timber and fitted with single glazing. While they are an important feature of many period homes, older windows can often suffer from draughts, sticking sashes and ongoing maintenance such as sanding and repainting.
Modern sliding sash windows are designed to retain the same elegant proportions and vertical sliding operation while using advanced materials and glazing. uPVC frames provide durability and require very little maintenance, while modern double glazing improves insulation and helps reduce heat loss.
The way the windows operate has also improved compared to the traditional style operating hardware. Modern sliding sash windows use precision balances that allow the sashes to glide smoothly and stay securely in position. Many systems also include features such as tilt-in sashes for easier cleaning and enhanced locking systems for improved security.
The result is a window that preserves the traditional appearance of classic sash windows while delivering the comfort, efficiency and reliability expected in a modern home.
Sash Windows Gallery
