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What to Consider When Choosing Wooden Sash Windows

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Sash Windows Kids bedroom

Whether you are building a new home in the style of the Georgian era, renovating a Victorian property or replacing windows in a Grade I listed Castle, wooden sash windows are likely to be a necessity to match the period and charm of the building.

Often associated with 18th and 19th century properties, wooden sash windows are thought of as difficult to operate, quite often having been painted shut over the years. They are seen as draughty, noisy, poorly insulated and lacking in security features; with modern wooden sash windows this no longer needs to be a concern.

Keep the Tradition or make it modern?

Cords & Weights

Early sash windows made from timber utilised either chain, or cotton cord and lead weights for method of operation; both unsightly and prone to breakages.  The Bereco wooden sash window overcomes this by incorporating a pulley and weights lifting system featuring a heavy duty nylon cord and self lubricating pulley wheels.

Inline Spiral Balance

Modernise your window by choosing the latest semi-concealed inline design with a pre tensioned spring. This allows you to retain the features of an original sash window whilst benefiting from innovative operation.

Design it or Match it?


Our sleek Contemporary profile is specifically designed for modern or new build homes, Traditional profiles complement the style of period style properties whilst Heritage profiles have been exclusively designed with slim frame sections and specialist glazing for architecturally sensitive projects, listed buildings and areas where conservation approval is required.

Bar designs

An extensive range of bar designs including the ever popular Georgian 6 over 6 pane design and regency marginal bar design can be coupled with bespoke frame designs. Curved heads, curved sashes and even curved on plan frames and glazing make your home as individual as you are.


Historically, sash windows had to be painted after installation and re-painted every couple of years, which eventually resulted in the window being painted shut and unable to open. Sash windows that are supplied fully factory finished eliminate this problem, with an extensive 10 year warranty on paint finish for peace of mind.

Introduce a splash of colour with any BS or RAL paint finish to create a truly individual design statement. You can also choose from our exclusive Heritage Range colour scheme or Farrow & Ball colour matching where a traditional finish is desired.

Keep out the Cold

Draught Proofing

Draughts are now a thing of the past ;  Bereco wooden sash windows are fully weather sealed, even at the parting bead and meeting rails for complete protection from the elements. Our Cords & Weights Sash Windows also feature a pulley wheel draught proof casing for prevention of draughts through the weight pocket.

Weather Testing

As part of the BM TRADA High Performance Timber Window Scheme our wooden sash windows are certified to BS6375 Part 1 achieving outstanding results for air tightness, water tightness and wind resistance.

Keep the Heat in

Double Glazed

Our Contemporary and Traditional wooden sash windows have 24mm double glazed units as standard, proven to be the optimal thickness for thermal efficiency.

Triple Glazed

For increased thermal efficiency, triple glazing offers excellent centre pane U Values as low as 0.5W/m²K with an overall U values as low as 0.8W/m²K.

Single and Slim-Line Double Glazing

Our Heritage Sliding Sash Window can be supplied with the options of 14mm Slim-Line double glazed units that are fully Part L compliant with u values as low as 1.2W/m²K or 4mm Single Glazing when specified.

Safety First

Security Features

With any property security is a concern. Bereco wooden sliding sash windows are designed to incorporate the latest high security features. Sash windows are supplied with Angel Ventlock or key operated Vent lock combined with high performance fitch fasteners to keep windows secure.

Enjoy the Peace and Quiet

Acoustic Glazing

For properties situated in inner cities or areas where external noise is of concern Acoustic Glazing can be used to achieve optimum acoustic performance with decibel ratings as high as 45dB.

View Our Timber Sash Windows


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