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.
Pearl Window Systems’ Flush Sash windows combine the clean, seamless appearance of traditional timber windows with the benefits of modern PVCu manufacturing.
Designed with slim sightlines, excellent thermal performance and a wide choice of colours and finishes, the Flush Sash range provides a versatile solution for both traditional and contemporary properties.
Designed Around Performance
From its seamless appearance to its patented weather protection, the Flush Sash system brings together traditional styling and modern PVCu engineering.
Sleek Appearance
A seamless flush finish gives the window its distinctive appearance, with the internal pane designed without an external overlap.
Thermally Efficient
Triple glazing ready, with U-values as low as 1.2 W/m²K, helping to retain warmth within the property.
Versatile
Traditional proportions can be combined with modern finishes, making Flush Sash suitable for heritage-inspired and contemporary properties.
Colourful Choice
Choose from a wide range of colours and foiled finishes, including the option to select different finishes for the outer frame and sash.
Conservation Areas
Designed to replicate the character of timber windows, with woodgrain foiled finishes available to help meet traditional planning requirements.
Slim Sightlines
Slim PVCu profile sightlines help maximise the glazed area and allow more natural light into the room.
Highly Secure
The system is designed to meet recognised security requirements, including PAS24, Secured by Design and Part Q testing.
Matching Products
Flush Sash can complement other Liniar products, including bi-folding and patio doors and wider conservatory applications.
Patented Innovations
Patented features include the Liniar co-extruded bubble gasket, thermal dam and glazing flipper, engineered to improve system performance.
British Made
The Liniar range is designed, manufactured and supported in Britain by a team with extensive experience within the window industry.
No Draughts or Leaks
The patented bubble gasket helps create a continuous weather seal, including around welded corners, reducing draughts and improving weather resistance.
Resurgence
A new generation of Flush Sash design.
Resurgence combines a 70mm sash with an 80mm frame, using Liniar’s innovative multi-chambered design to deliver an A+ rated window system while retaining the clean, external flush finish associated with traditional timber windows.
A double-rebated weather seal and patented co-extruded bubble gasket help eliminate the external seals commonly associated with timber replica windows, creating a clean finish while providing a draught-free, weatherproof window.
A+ Rated
The multi-chambered 70mm sash and 80mm frame are designed to deliver outstanding A+ rated performance.
Clean External Detail
The external flush finish removes the telltale overlap associated with standard PVCu windows.
Weather Sealed
Double-rebated weather seals and a patented co-extruded bubble gasket provide a draught-free, weatherproof window.
Triple Glazing Ready
Resurgence is triple glazing ready, with U-values as low as 0.9 W/m²K for excellent energy efficiency.
Fully Foiled
Fully foiled glazing areas to the outer frame and transom profiles add authenticity, even when the window is open.
Four Options
Available fully mechanically jointed, fully welded, Timberweld® welded, or mechanically jointed externally with a welded interior.
Colour & Finish
A wide choice of colours and finishes is available from stock, with hundreds of additional options available on longer lead times.
10-Year Guarantee
Resurgence is covered by the Liniar 10-year guarantee and supported by a team with more than 500 years’ experience in fenestration technology.
Original Flush Sash & Resurgence
Choose between our established 70mm Original Flush Sash system and the deeper 80mm Resurgence system, depending on the specification and performance requirements of your project.
Original Flush Sash
Our original 70mm Flush Sash system combines the traditional flush appearance with the benefits of modern PVCu construction.
Resurgence
The 80mm Resurgence system builds on the Flush Sash aesthetic with a deeper profile, providing another option for projects where the additional system depth is appropriate.
Flush Sash Technical Information
Technical documents, system information and supporting resources for the Flush Sash range.
70mm Original Flush Sash
Technical Information
Technical information for the 70mm Flush Sash casement window system.
Flush Sash Brochure
Explore the Flush Sash range, styling options, features and benefits in the product brochure.
Flush Sash Casement Window
Liniar technical information covering the Flush Sash casement window system.
Energy Plus Frames
Technical information for the Liniar Flush Sash casement window with Energy Plus frames.
80mm Resurgence
Resurgence A3 Wall Chart v7
A3 wall chart covering the 80mm Resurgence Flush Sash system.
Resurgence 80mm Flush Sash Casement
Technical information covering the 80mm Resurgence Flush Sash casement system.
Ancillaries for 80mm Resurgence Profiles
Technical information covering ancillary components for the 80mm Resurgence profiles.
Liniar Resurgence Flush Sash Casement Window
Liniar technical information for the Resurgence Flush Sash casement window.
Supporting System Information
70mm Window & Door System
A3 wall chart providing an overview of the 70mm window and door system.
Cill Profiles
A2 wall chart showing the available cill profiles and associated information.
Cills & Associated Items
Further information on cills and associated items available for the Pearl window systems.
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 increased depth for enhanced glazing options while supporting excellent thermal performance. Eco Frame provides an alternative specification where increased profile depth and glazing requirements need to be considered.
Profile
90mm system depth for increased profile capacity.
Performance
Designed around enhanced glazing and thermal performance.
Future
A deeper system designed with future requirements in mind.
The Eco Frame system provides a deeper profile option for Flush Sash applications where the specification calls for a 90mm system.
Installation & Technical Support
Access the supporting information you need for specification, installation and ordering of Pearl Window Systems Flush Sash products.
VIEW FRAME COLOUR OPTIONS →Installation Guide
Liniar window installation guidance for installers.
VIEW / DOWNLOAD →Window Order Form
Use the current window order form when placing your order with Pearl.
VIEW / DOWNLOAD →Liniar Windows Brochure
Further product information from the Liniar window range.
VIEW / DOWNLOAD →Ready to Specify Flush Sash?
From the original 70mm Flush Sash to the deeper 80mm Resurgence system and our 90mm Eco Frame option, Pearl Window Systems can support your project with the right specification, technical information and product support.
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