Flush Sash Windows
Looks Like Traditional Timber. Performs Like Modern PVCu.
A beautifully flush external finish combined with modern PVCu performance, security and thermal efficiency. Choose from our original 70mm Flush Sash system or the deeper 80mm Resurgence system.
Traditional Character. Modern Performance.
Our Flush Sash windows combine the traditional appearance of timber with the performance and practicality of modern PVCu. The flush external finish creates a clean, understated appearance, while slim sightlines and carefully engineered profiles help maximise natural light and thermal efficiency.
Available in a wide range of colours and finishes, Flush Sash windows can be specified to complement both contemporary homes and properties where a more traditional aesthetic is required.
Original Flush Sash 70mm vs Resurgence 80mm
Two Flush Sash systems, two profile depths. Our comparison document highlights the key differences between the established 70mm Original Flush Sash system and the deeper 80mm Resurgence system, helping you select the right option for your project.
Original Flush Sash
Our established Flush Sash system, combining a traditional flush appearance with modern PVCu performance.
Resurgence
A deeper-generation Flush Sash system designed around enhanced profile depth, performance and specification flexibility.
Original Flush Sash
Our original 70mm Flush Sash system combines the traditional appearance of a timber flush window with the performance, security and low-maintenance benefits of modern PVCu.
The clean external finish, slim sightlines and choice of colours and finishes make the system suitable for a wide range of residential applications, from traditional properties to new-build developments.
70mm Window & Door System
View the full 70mm Window & Door System information, including system details and specification information.
VIEW / DOWNLOAD →Designed Around Performance
Traditional styling meets modern engineering, with a combination of aesthetics, performance and practical benefits.
Sleek Appearance
A clean, flush external finish inspired by traditional timber windows.
Thermally Efficient
Modern multi-chambered PVCu construction designed to support thermal performance.
Versatile
Suitable for a wide range of property styles and project requirements.
Colourful Choice
Choose from a wide range of colours and finishes to suit your specification.
Conservation Areas
Traditional styling makes Flush Sash suitable for projects where appearance is important.
Slim Sightlines
Slimmer sightlines help maximise glazing and natural light.
Highly Secure
Designed to accommodate modern locking and security hardware.
Matching Products
A wider system approach allows complementary products to work together.
Patented Innovations
Engineered using innovative profile and sealing technology.
British Made
Manufactured in the UK as part of Pearl Window Systems' product range.
No Draughts or Leaks
Designed with effective weather sealing to help protect against the elements.
Resurgence
A new generation of Flush Sash design.
Resurgence combines a 70mm sash with an 80mm frame, creating a deeper profile designed around performance, flexibility and a clean external flush finish.
Built around Liniar's multi-chambered profile technology, Resurgence is A+ rated and features a double-rebated weather seal together with a patented co-extruded bubble gasket. The system is also designed to accommodate a range of glazing and finish options.
A+ Rated
Clean External Detail
Weather Sealed
Triple Glazing Ready
Fully Foiled
Four Options
Colour & Finish
10-Year Guarantee
Flush Sash Technical Information
Technical information, system documentation and supporting resources for specifying and working with our Flush Sash window systems.
Original Flush Sash
Technical Information
Technical information and specification details for the original Flush Sash system.
Flush Sash Brochure
Product information covering the Flush Sash range, features and available options.
Flush Sash Casement Window
Detailed information on the Flush Sash casement window configuration.
Energy Plus Frames
Information relating to Energy Plus frame options and enhanced thermal performance.
Resurgence
Resurgence A3 Wall Chart v7
System overview and profile information for the Resurgence range.
Ancillaries for 80mm Resurgence Profiles
Supporting profile and ancillary information for the Resurgence system.
Liniar Resurgence Flush Sash Casement Window
Manufacturer product information for the Resurgence Flush Sash system.
Resurgence Brochure
Product information covering the Resurgence 80mm Flush Sash system, features and available options.
Supporting System Information
Cill Profiles
Cills & Associated Items
Eco Frame
Previously known as our 90mm system, Eco Frame is Pearl Window Systems' deeper window system, developed with energy efficiency, performance and the future in mind.
The 90mm profile provides additional depth for enhanced thermal performance and glazing options, making Eco Frame a strong choice where higher levels of specification are required.
Profile
Performance
Future
Installation & Technical Support
Everything you need to specify, order and install your Flush Sash windows, from colour and hardware availability through to installation guidance and supporting product information.
Flush Sash Windows. Built for Modern Performance.
Explore our Flush Sash systems, technical resources and specification options to find the right solution for your project.