Heritage & Flush Sash Windows You Can Rely On
If you’re looking for stylish, high-performance heritage windows, 21st Century Conservatories provide expertly installed flush sash windows designed to enhance your home’s character, comfort and energy efficiency.
Our flush sash uPVC windows combine traditional timber aesthetics with modern performance, making them the perfect choice for both period properties and contemporary homes. Whether you’re replacing old timber frames or upgrading to modern flush windows, we deliver solutions that are built to last.
With over 20 years of experience serving Salisbury and the surrounding areas, we’ve built a reputation for quality workmanship, reliable service and attention to detail.
Why Choose Flush Sash Windows?
Flush sash windows are a popular choice for homeowners who want to retain classic styling while benefiting from modern materials and performance.
Our flush windows are designed to improve insulation, reduce heat loss, lower energy bills and minimise outside noise, all while maintaining the timeless, sleek look associated with traditional timber joinery where the window sits completely flush within the frame.
We offer premium flush sash windows uPVC profiles, giving you the perfect balance of luxury property style and practical preferences. These advanced heritage windows provide a low maintenance, cost-effective solution, ideal for maintaining character aesthetics without the hassle of painting and sanding timber frames.
All of our window options feature high-performance seals, secure locking systems and double or triple glazing, ensuring durability, security and long-term performance.
Premium Heritage Windows & Flush Profiles
We supply and install a full range of flush sash uPVC windows to suit different property types and requirements:
● Flush sash uPVC windows – low maintenance, energy-efficient, and long-lasting with authentic mechanical joints.
● Traditional heritage windows – classic appearance ideal for period, cottage, and mock-timber properties.
● Sleek flush windows – minimalist, contemporary design with smooth, clean lines for modern architectural homes.
Each window can be customised with a variety of authentic woodgrain finishes, heritage colours, and premium glazing options to complement your home perfectly.
Replacement Double Glazed Glass Units
If your existing flush sash windows are in good condition but the glass is misted, blown, or damaged, we offer replacement glass units as a cost-effective alternative to full replacement.
This service is ideal for resolving issues such as condensation between the panes or cracked glass, helping to restore performance and improve energy efficiency without the expense of replacing the entire frame.
Built for Security & Performance
Our flush sash windows are designed with both thermal efficiency and home security in mind.
Each installation includes multi-point locking systems, high-quality glazing, and robust frame construction to ensure your home remains secure and energy-efficient. All work is carried out to meet current building regulations and strict industry standards, giving you complete peace of mind.
Residence 7
The Residence 7 system is a unique 7 chamber window designed to replicate the 19th century flush sash timber window. With its flush finish inside and out, it’s the perfect choice for conservation installations.
With 14 colours to choose from, there is a colour to suit all home decors and individual tastes. Also available with a range of traditional and modern hardware options to suit your home.
Residence 9
The luxury Residence 9 window system is designed as a timber alternative that still offers benefits of a modern uPVC, making it ideal for period property renovations or townhouses. Due to its unique design, it’s easy to keep clean with no dirt traps.
With 11 classic heritage colours to choose from, there is an option for all tastes. Transform your home and replicate original heritage window styles and features with face mounted Georgian bars, authentic weatherbars/Mullions & traditional looking peg stays & handles. Alternatively, you can opt for a more modern finish with traditional style handles in contemporary colours.
Bonded glass & internal glazing, coupled with modern multi-point locking, provides the ultimate deterrent against intrusion, keeping your home secure and protected.
Infinity
Infinity is a stylish high-performing timber alternative window and door range. The range replicates traditional timber windows with all of the benefits of uPVC. The frames are available in a range of hand-picked woodgrain finishes with an extensive choice of handles and accessories to suit the character of your property.
The Infinity window and door collection is manufactured using high quality Infinity profiles for the highest level of both energy efficiency and strength. Even the corner joints look like those on timber windows, creating a smooth joint rather than the corner welds typically used on uPVC window frames.
Local Flush Window Installers in Salisbury
As experienced local heritage windows installers based right here in Salisbury, we provide honest advice, clear pricing, and a tailored approach for every project. Whether you’re upgrading a modern home or replacing traditional glazing in a conservation area, we ensure a professional and tidy installation from start to finish.
Our team takes pride in delivering flush sash windows that not only look fantastic but also perform reliably for years to come.
Upgrade Your Home with Flush Sash Windows Today
Whether you’re interested in flush sash uPVC windows, premium timber-alternative heritage windows, or replacement double-glazed units, we’re here to help.
Contact 21st Century Conservatories & Fascias Ltd today for a free, no-obligation quote and find out why homeowners in Salisbury trust us for high-quality flush windows.