14
Jan '26
Sternfenster launches ‘Timberline’ – a timber-authentic PVC-U Flush Window
Read More
Modern Technology With Classic Aesthetics
Vertical Sliding Sash Windows
Modern Technology With Classic Aesthetics
Vertical Sliding Sash Windows
Modern Performance, Traditional Styling
Maximise your energy savings without compromising on style with the Regency Sash Collections.
Design your window your way without losing the classic look and feel of sliding sash windows.
Maximise your energy savings without compromise on style with the Regency Sash Collections.
Explore our colour range and reflect your style through your windows.
Maximise your energy savings without compromise on style with the Regency Sash Collections.
Design your window your way without losing the classic look and feel of sliding sash windows.
Maximise your energy savings without compromise on style with the Regency Sash Collections.
Explore our colour range and reflect your style through your windows.
Key Features
The Regency Sash Collection brings the timeless elegance of period property windows to your home without the high maintenance of traditional timber. Replicating classic aesthetics with run-through horns and authentic jointing, these windows offer modern peace of mind with an A-rating for energy efficiency and a convenient tilt-in cleaning function. Every window is fully customisable with a wide range of colours and hardware, ensuring your home remains warm, secure, and stylish for years to come.
Choice Of Joints
Choose from Standard, Timberline, or Smoothline joints – each offering a unique balance of authenticity, durability, and refined finish.
Georgian Bars
Add Georgian bars for timeless elegance. Available in classic or duplex styles to create authentic, period-inspired sash detailing.
Slim Meeting Style
Optional slim meeting style to a promote a more authetnic hertiage look, making it perfect for conservation areas.
Run Thru Horns
Enhance authenticity with run thru horns, replicating traditional timber sash detailing and adding classic character to any property style.
Deep Bottom Rail
Further enhance the visual appeal of your windows with a deep bottom rail, synonomous with traditional timber windows.
Key Features
The Regency Sash Collection provides a high-performance, versatile solution for everything from modern developments to sensitive conservation projects. This range is engineered for durability and ease of installation with pre-tension spiral balances. Backed by a Secured by Design license and available with Express Delivery on popular colours, it is the ideal choice for installers looking to provide authentic heritage aesthetics alongside market-leading thermal performance.
Choice Of Joints
Choose from Standard, Timberline, or Smoothline joints – each offering a unique balance of authenticity, durability, and refined finish.
Georgian Bars
Add Georgian bars for timeless elegance. Available in classic or duplex styles to create authentic, period-inspired sash detailing.
Slim Meeting Style
Optional slim meeting style to a promote a more authetnic hertiage look, making it perfect for conservation areas.
Run Thru Horns
Enhance authenticity with run thru horns, replicating traditional timber sash detailing and adding classic character to any property style.
Deep Bottom Rail
Further enhance the visual appeal of your windows with a deep bottom rail, synonomous with traditional timber windows.
Customisable Options
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
STANDARD DELIVERY
Agate / Agate
Anthracite / Anthracite
Anthracite / Whitegrain
Chartwell / Chartwell
Chartwell / White
Black/Brown / Black/Brown
Black/Brown / White
Rosewood/White
Light Oak / Light Oak
Light Oak / White
Irish Oak / Irish Oak
Irish Oak / White
Anthracite Smooth / Anthracite Smooth
Anthracite Smooth / White
Black Matt Ulti Smooth / Black Matt Ulti Smooth
Black Matt Ulti Smooth / White
EXPRESS DELIVERY
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate / Agate
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Anthracite
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Whitegrain
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell / Chartwell
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black/Brown / Black/Brown
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black/Brown / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood/White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Light Oak / Light Oak
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Light Oak / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / Irish Oak
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / Anthracite Smooth
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Matt Ulti Smooth / Black Matt Ulti Smooth
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Matt Ulti Smooth / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Whitegraine / Whitegrain
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cream / Cream
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cream / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / Whitegrain
Antique Black
Black
Hardex Bronze
Hardex Chrome
Hardex Gold
Hardex Graphite
White
Antique Black
Black
Hardex Bronze
Hardex Chrome
Hardex Gold
Hardex Graphite
White
Customisable Options
Transform Your Home's Look: Explore Our Window / Door Configurator -
Preview Our Extensive Range of Interior and Exterior Shades With The “Turn Around” Icon.
STANDARD DELIVERY
Agate / Agate
Anthracite / Anthracite
Anthracite / Whitegrain
Chartwell / Chartwell
Chartwell / White
Black/Brown / Black/Brown
Black/Brown / White
Rosewood/White
Light Oak / Light Oak
Light Oak / White
Irish Oak / Irish Oak
Irish Oak / White
Anthracite Smooth / Anthracite Smooth
Anthracite Smooth / White
Black Matt Ulti Smooth / Black Matt Ulti Smooth
Black Matt Ulti Smooth / White
EXPRESS DELIVERY
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate / Agate
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Anthracite
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / Whitegrain
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell / Chartwell
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Chartwell / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black/Brown / Black/Brown
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black/Brown / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Rosewood/White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Light Oak / Light Oak
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Light Oak / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / Irish Oak
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Irish Oak / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / Anthracite Smooth
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite Smooth / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Matt Ulti Smooth / Black Matt Ulti Smooth
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Black Matt Ulti Smooth / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Whitegraine / Whitegrain
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cream / Cream
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Cream / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Anthracite / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
Agate / White
Outside View
*Colour configurations are for illustration purposes only. For detailed colours, contact us today.
Frame Colour Selected:
White / Whitegrain
Antique Black
Black
Hardex Bronze
Hardex Chrome
Hardex Gold
Hardex Graphite
White
Antique Black
Black
Hardex Bronze
Hardex Chrome
Hardex Gold
Hardex Graphite
White
Upgrade Today
The Regency Sash Collection comes with our Classic hardware range as standard. For a more traditional aesthetic, you can easily upgrade to the Heritage hardware range at the point of order.
Upgrade Today
The Regency Sash Collection comes with our Classic hardware range as standard. For a more traditional aesthetic, you can easily upgrade to the Heritage hardware range at the point of order.
Know The Difference
Regency Sash
The Regency sash window blends traditional charm with modern performance. Featuring precision grooved joints, it achieves an A-Rating for energy efficiency, keeping homes warm and reducing costs. Personalise your windows with a range of optional upgrades, from decorative Georgian bars to stylish hardware, ensuring you achieve your dream home.
Grooved Joints
2 Hardware Designs
12 Colours Available
Regency Styleline
The Regency sash window blends traditional charm with modern performance. Featuring precision grooved joints, it achieves an A-Rating for energy efficiency, keeping homes warm and reducing costs. Personalise your windows with a range of optional upgrades, from decorative Georgian bars to stylish hardware, ensuring you achieve your dream home.
Smooth Joints
2 Hardware Designs
12 Colours Available
Regency Timberline
The Regency sash window blends traditional charm with modern performance. Featuring precision grooved joints, it achieves an A-Rating for energy efficiency, keeping homes warm and reducing costs. Personalise your windows with a range of optional upgrades, from decorative Georgian bars to stylish hardware, ensuring you achieve your dream home.
Timber Style Joints
2 Hardware Designs
12 Colours Available
Know The Difference
Regency Sash
The Regency sash window blends traditional charm with modern performance. Featuring precision grooved joints, it achieves an A-Rating for energy efficiency, keeping homes warm and reducing costs. Personalise your windows with a range of optional upgrades, from decorative Georgian bars to stylish hardware, ensuring you achieve your dream home.
Grooved Joints
2 Hardware Designs
12 Colours Available
Regency Styleline
The Regency sash window blends traditional charm with modern performance. Featuring precision grooved joints, it achieves an A-Rating for energy efficiency, keeping homes warm and reducing costs. Personalise your windows with a range of optional upgrades, from decorative Georgian bars to stylish hardware, ensuring you achieve your dream home.
Smooth Joints
2 Hardware Designs
12 Colours Available
Regency Timberline
The Regency sash window blends traditional charm with modern performance. Featuring precision grooved joints, it achieves an A-Rating for energy efficiency, keeping homes warm and reducing costs. Personalise your windows with a range of optional upgrades, from decorative Georgian bars to stylish hardware, ensuring you achieve your dream home.
Timber Style Joints
2 Hardware Designs
12 Colours Available
Energy Efficiency
Enjoy a warmer, more comfortable home with the Regency Sash collection. Its A-Rated energy efficiency reduces heat loss, lowers your bills, and combines classic style with modern performance for lasting comfort and savings.
U-Value
Choice of Glass
A Rated (White Frames)
Security
Enjoy complete peace of mind with the Regency Sash collection. Its strong locking systems and optional Secure by Design upgrade help protect your home, giving you confidence that your property and loved ones are safe and secure.
Energy Efficiency
Enjoy a warmer, more comfortable home with the Regency Sash collection. Its A-Rated energy efficiency reduces heat loss, lowers your bills, and combines classic style with modern performance for lasting comfort and savings.
U-Value
Choice of Glass
A Rated (White Frames)
Security
Enjoy complete peace of mind with the Regency Sash collection. Its strong locking systems and optional Secure by Design upgrade help protect your home, giving you confidence that your property and loved ones are safe and secure.
Frequently Asked Questions
What Are The Main Differences In The Regency Collection?
The Regency Collection offers three distinct joint options to suit different property styles:
Regency Sash: The classic choice featuring standard grooved joints for a traditional look.
Regency Styleline: A contemporary finish using seamless welded joints for a smooth, easy-to-clean appearance.
Regency Timberline: The ultimate heritage option with mechanical timber-style joints designed to replicate traditional wood construction, ideal for conservation areas.
Are Your Products Recyclable?
Yes, the Regency Sash windows are made from PVCu, a highly durable material that is also fully recyclable. Because the collection is built for “lasting performance” and low maintenance, the materials can be repurposed at the end of their long lifespan, making them a sustainable choice for your home.
How do sash windows work?
Unlike ancient timber windows that used heavy weights and pulleys, the Regency Sash uses a modern, precision-engineered spiral balance system or spring balance mechanism. This hidden system supports the weight of the sliding sashes, allowing you to lift them open with just a fingertip and holding them safely in place at any height.
How to paint sash windows?
You don’t! One of the biggest advantages of the Regency Sash range is that they are manufactured from high-quality, durable uPVC. Unlike timber, they will never rot, warp, or flake. They require zero painting or sanding throughout their life. If you want a specific colour, we offer a wide range of woodgrain foils and colour finishes that are bonded to the frame for a lifetime of maintenance-free colour.
Are sash windows draughty?
Original timber sash windows were famous for rattling and letting in drafts, but the Regency Sash is completely different. Our windows feature modern weather seals and advanced brush piles concealed within the frame. These create a tight, weather-proof barrier against wind and rain, earning our windows an ‘A’ energy rating and keeping your home warm and draught-free.
How much are sash windows?
Because every home is unique, every Regency Sash window is made to measure. The price depends on your specific sizes, chosen colour finish, and hardware options (such as chrome or gold furniture). For an accurate price, please request a quote from your local approved installer, who can survey your property and provide a precise cost.
Frequently Asked Questions
What Are The Main Differences In The Regency Collection?
The collection offers three distinct styles to match your home’s character:
Regency Sash: The classic, versatile option with standard grooved joints.
Regency Styleline: Features seamless welded joints for a smooth, modern, and easy-to-clean finish.
Regency Timberline: Uses mechanical timber-style joints to perfectly replicate traditional wooden windows, making it ideal for conservation areas.
Are Your Products Recyclable?
We’re committed to reducing carbon emissions by producing sustainable sash windows windows. Our sash windows are made from recyclable materials and contribute to a circular economy.
Who is Sternfenster?
Established in 1974, Sternfenster became one of the UK’s largest trade fabricators of uPVC and aluminium windows and doors. Currently run by Mike and Simon Parczuk, the original founders’ sons, with over 250 employees and hundreds of years combined experience, we continue to deliver high-quality products nationally but with the values of a family-run business.
We are proud to have over 50 years of manufacturing at Sternfenster and are fully committed to UK homeowners and offering sustainable products and services wherever possible. We offer nationwide delivery across our comprehensive portfolio and have an approved installer network.
How Fast Are Your Lead Times?
We’re committed to reducing carbon emissions by producing sustainable uPVC casement windows. Our casement windows are made from recyclable materials and contribute to a circular economy.
Are Regency Windows Energy Efficient?
The Regency Sash Collection adapts beautifully to contemporary homes, offering sleek lines, energy efficiency, and customisable details that complement modern interiors
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Jan '26
Sternfenster launches ‘Timberline’ – a timber-authentic PVC-U Flush Window
Read More
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Find Your Approved Installer
Find your nearest approved installer with Sternfenster today.
- Postcode
- Name
- Contact Details
Find Your Approved Installer
Find your nearest approved installer with Sternfenster today.
- Postcode
- Name
- Contact Details
