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As homeowners continue to invest in improving properties rather than moving, demand for high-performance replacement windows that combine heritage aesthetics with modern performance is growing. With energy efficiency, security and long-term value now high on the agenda, windows and doors are increasingly recognised as one of the most impactful upgrades a homeowner can make.
Spring traditionally marks the start of the busiest season for home improvement projects, making it the ideal time for installers to discuss long-term upgrades with customers. However, with the market offering an ever-expanding range of products competing on performance, aesthetics, glazing options and price, choosing the right system can feel overwhelming for homeowners.
Flush window systems have seen significant growth in recent years, thanks to their ability to combine the timeless appearance of traditional timber windows with the performance benefits of modern materials and engineering.
Residence 9 is a premium flush window and door system designed to authentically replicate 19th-Century timber windows while delivering the efficiency, durability and security expected from modern glazing solutions.

With its 100mm frame depth, adaptable glazing options and full suite of matching doors, it enables homeowners to achieve a traditionally elegant flush exterior alongside a stylish interior finish.
To help installers and homeowners understand where it fits within today’s competitive market, this article highlights 9 reasons why R9 has become a considered choice for new-build, renovation, conservation and listed building projects – particularly at a time when long-term value matters more than ever.
1. The Power of Depth: A 100mm Frame
One of the defining features of the system is its substantial 100mm frame depth, which provides both visual and functional benefits.
Inside the profile, nine chambers maximise insulation and energy performance, helping homes stay warmer during winter and cooler in summer.
Compared with traditional 95mm timber windows, the additional 5mm depth also offers a practical advantage for installers. The deeper frame neatly covers the plaster line during replacement projects, helping to achieve a clean, professional finish without the need for additional trim work.
2. Outstanding Energy Efficiency
Energy efficiency is a key priority for modern homeowners, and this system delivers impressive thermal performance.
It achieves an A++ energy rating, helping to reduce heat loss and decrease energy bills. Combined with advanced glazing and weather sealing, it provides excellent insulation while maintaining the traditional flush appearance.
3. Flexible Glazing Options
R9 has been designed to offer flexible glazing options that improve both thermal efficiency and acoustic insulation.
With a simple bead change, installers can update existing windows from 28mm double glazing to 44mm triple glazing. This adaptability allows homeowners to improve both thermal efficiency and acoustic insulation where required.
Performance figures include:
● U-value of 1.2 with standard double glazing
● U-value as low as 0.76 with triple glazing
These results have been independently tested, ensuring it consistently delivers on its energy performance.
4. Extensive Colour Choice
With 21+ colours and finishes available, the range offers one of the widest colour selections in the flush window market. Whether homeowners prefer soft heritage tones, deep contemporary shades, or bold design statements, it provides extensive customisation choices to suit every property style – from cottages and conservation homes to new builds and high-end renovations.
5. Extensive Hardware and Accessories
Detail is everything when creating the perfect window design, and the system offers a wide selection of hardware and accessories to complement the look, whether the style is contemporary or period.
Installers can specify features such as:
● Georgian bars
● Weatherbars/Mullion Stiffener
● Radlington Cill
● Authentic butt hinges (working or dummy)
● Fluted corner-posts for bay windows
These additions help replicate existing window designs or introduce new character features that enhance the overall aesthetic of the home.
6. Authentic 19th-Century Timber Aesthetic
Designed and manufactured in the UK, the system has been carefully engineered to replicate 19th-Century timber designs. The flush design adds beauty and character to homes and is sure to tick all the right boxes.
By combining traditional design principles with modern materials and manufacturing techniques, it offers the appearance of heritage timber windows alongside the durability and low maintenance of modern glazing solutions.
7. Ideal for Conservation and Heritage Projects
Thanks to its authentic design, R9 is widely accepted in listed buildings and conservation areas across the UK where maintaining historical and traditional aesthetics is essential.
The system replicates the flush wooden windows commonly found in heritage properties across the UK’s towns, villages and cities, making it suitable for:
● Stately homes
● Georgian and Victorian properties
● Country homes and farmhouses
● Luxury renovations and modern homes
Some recent projects where it has been fitted are:
Badgers Holt
The renovation of a rural Grade II listed farmhouse in Nuneaton, Leicestershire, has been elevated with the installation of 38 windows as well as two bespoke-shaped windows, all in the colourway Clotted Cream, bringing together heritage-inspired design and modern performance for a property formerly belonging to Osbaston House Farm.

Bournemouth Property
A striking, large-scale luxury home on one of Bournemouth’s most prestigious roads has been transformed with this system. The installation consisted of 54 windows and four French doors in Grained White.
8. No External Beads
The beading is positioned on the interior of the window, providing a higher level of security. Homeowners can also upgrade from double to triple glazing with one simple bead change
9. Safe and Secure
Built to the highest European CEN A wall thickness standard, the system offers exceptional strength and security. Reinforced screw retention keeps locks and hinges firmly in place, while heavy-duty hinges support triple glazing
“We are so proud of the products we can offer to our customers. We launched this range 15 years ago and today it can still help bring customers’ ideas to life, balancing design and practicality to enhance their home, whilst still maintaining traditional looks with superior performance.”