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uPVC Flush Sash window

Flush Sash

Flush Sash Window is a fully timberweld jointed ‘timber alternative’- meaning the sash sits beautifully within the frame, providing a sleek, smooth exterior with a choice of beautiful finishes.

Double Rebated and Timber Welded, it’s the ideal timber alternative. It blends the clean lines and elegance of a pre-1932 timber window with modern thermal efficiency – and none of the ongoing maintenance.

Designed to complement character properties perfectly, as well as modern, architectural masterpieces, it grants the ultimate versatility and style.

The flush sash is glazed like a standard casement window – no bonding is required, resulting in less disruption during installation.


Frame Type

Ovolo type bead


28mm double or 36mm triple glazing, contact one of our team for more glazing options.


Choice of Georgian bars, Astragal bar and a wide choice of handles.


U-value above is for standard configuration

*Can achieve U-Values as low as 0.9


Manufactured using uPVC material. 

Add a pop of colour

From classic white to agate grey, the flush sash windows are available in a variety of colours and finishes to suit your property style. 

Foil outside and inside

Cream foil

White foil


Black Brown

7016 Grey

Foil outside / white inside

Anteak / White

Rosewood / White

Black Brown / White

7016 Grey / White

7038 Agate Grey / White

Flush sash window liniar
House with casement windows