Flush Sash Windows from Clarks Glass

Designed to replicate 19th century flush sash timber windows, they can be considered for use in areas of conservation due to their authentic appearance.


This authentic design is also appealing to any homeowner who wants a top end luxury window brand.  It can accommodate 28mm or 40mm triple glazing with market-leading acoustic performance. It achieved one of the highest classifications on weather testing due to its robust design. It is hand finished to the same high standard of TS Collection windows.



History and heritage


The Flush Sash system from Clarks Glass are crafted from modern, weatherproof PVCu which - unlike traditional timber windows - will never need sanding or repainting and will never rot, split or swell. These low maintenance windows will keep your home looking its best for years to come, with no more work than an occasional wipe with a damp cloth.


Flush Sash can be specified in bespoke sizes to suit the windows of your home, whether it’s a tall townhouse or a quaint and cosy cottage. Authentic astragal bars can also be fitted within your windows to give the “lattice” effect often found in historic homes.


Heritage houses can often be associated with damp and draughty living conditions due to ill-fitting windows or ineffective single glazing. Choosing the Flush Sash for your home can solve these problems and more. Energy-efficient, high-spec PVCu frames and double or triple glazing will keep your home significantly warmer and could dramatically lower your heating bills.  These features also prevent condensation forming and will reduce unwanted outdoor noise.


Security from our Flush Sash windows.


Clarks Glass windows are tested to the highest standards and conform to BS7950 (Specification for enhanced security performance of windows for domestic applications). Our windows are fitted with multipoint locking and hinge claws, offering maximum security and protection. Our windows are manufactured with internal glazed beading, ensuring that entry cannot be gained from the outside of your property.


Flush Sash window colour options.


Our windows are now available in a choice of 19 standard colours, from smooth white as standard to any of the colours below. Please note that the colours shown below are all foiled woodgraind effect.


Irish Oak   Cherrywood   Rosewood   Sienna PN   White grain   Cream   Beck Brown   Steel blue   Moss green
Dark green   Anthracite   Slate grey   Basalt grey   Silver grey   Agate grey   Chartwell   WIne red   Dark red


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