Timber Sash Windows, North Wales | John Knight Glass
Timber window installation Hawarden

Timber Windows, North Wales

Our client purchased this character filled home with a plan to improve the aesthetics and energy efficiency through a comprehensive renovation of both inside and out, whilst staying true to it's original period and style.

A key period feature of the property is the timber sliding sash windows to the front with feature glazing bars, a feature that the owner wanted to keep. The original windows were single glazed and unfortunately had not been maintained correctly over the years, causing the original timber to rot. Having looked at several options available to replace their old windows, the owners choose our own timber sliding sash windows from The Knight Collection, which offer a truly original timber sliding sash at a very competitive price point. The Knight Collection timber sliding sash windows are also double glazed and weather sealed, providing a significant improvement from the original windows by upgrading their home with much better energy efficiency and lower U values, all without compromising on the traditional aesthetic.

To the rear of the property all windows were supplied from our Flush timber alternative range from Evolution, whilst all french doors were also supplied in timber from The Knight Collection. All windows and doors were specifically chosen because of their unique combination of an authentic looking traditional timber product, yet offering all of the advantages of modern glazing products such as security, durability and improved energy efficiency.

For their conservatory, an aluminium roof was used for is unrivalled durability which matches perfectly with the timber french doors. All of these products worked seamlessly together to provide an effortless, period appropriate finish and a huge improvement to the comfort of our client's home.

The Knight Collection - Timber Sliding Sash Windows


The Knight Collection are our entry level timber sliding sash windows a perfect choice if you want to replace their old sash windows with something authentic on a budget.

Some of the key features include:

  • Authentic timber windows.
  • Available with cords & weights and spiral balance.
  • Available in a range of hard and soft wood and a range of finishes.
  • Modern manufacturing process to ensure protection against cold, wind, rain and noise.

Evolution Flush Windows


Evolution flush windows give a true alternative to the original timber flush casement windows of the past. Although these windows are manufactured from UPVC they look almost identical to timber thanks to many of the unique features of this window.

Some of the key features include:

  • 1.3 U value as standard
  • Available with a 45mm deep, authentic cill
  • 28mm double glazing
  • Available with traditional Georgian bar, leaded glass or clear glass
  • Available in a vast choice of colours and wood-effect finishes

The conservatory roof has been constructed from our bespoke aluminium roof lantern range. Due to the unique small size of this lean too consevatory we needed a bespoke size roof at an affordable price making our Skydiamond aluminium roof lantern the perfect choice.

Some of the key features include

  •     Celsius glass available.
  •     Manual and electric roof vents available.
  •     Square, ornate and raked frame profiles.
  •     Standard and bespoke sizes available.
  •     Thermally broken frame giving superior thermal efficiency.
  •     Large range of standard RAL colour options available.

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