Traditional Wooden Sliding Sash Window

Within the Traditional Range we offer three types of wooden sliding sash windows: traditional box, spiral balance and tilting spiral balance. All window designs provide exceptional performance and offer a high degree of customisation.

To suit a wide variety of homes, all wooden sliding sash window designs are available in a number of layouts (including square and angled bay), with a number of paint, stain, glazing and window furniture options. For period matching astragal bars can be incorporated. See the Materials and Furniture tabs to browse all options.

As is the case for all of our windows, security, weather performance and long life are intrinsic to the design. Our innovative and discreetly concealed weather seals provide excellent weather proofing and thermal insulation. Premium sash catches and locking mechanisms bring enhanced security and safety. For long life with low maintenance we only use Accoya® timber linings, which overcome the most vulnerable point within sliding sash window designs.

Traditional Box
This is the most authentic wooden sliding sash window and provides effortless movement, especially for larger, heavier sashes.

Spiral Balance
With a concealed spring balance this window design is ideal for narrower frame profiles.

Tilting Spiral Balance
Similar to the spiral balance design but incorporating windows that tilt inwards to allow cleaning from the inside.

  • Wooden sliding sash window on curved frontage
  • Wooden sliding sash window from the Tradition Range.
  • Wooden Sliding Sash Windows from the Traditional Range
  • Wooden sliding sash window with traditional horn design
  • Traditional Timber Sliding Sash Window External
  • Tilting Sliding Sash Window

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Be inspired by our Traditional Range of timber windows & doors


Traditional Wooden Sliding Sash Windows - Key Features

The Sash Collection - Sash Fastener

High Security

The wooden sliding sash windows are fitted with locking fasteners and sash stops on either side of the frame for maximum security.

For excellent weather performance we incorporate dual weather seals into the design of the timber sliding sash window.

Excellent Weather Performance

Our innovative, concealed weather seals achieve a much higher degree of weather performance than most of our competitor’s products.

Lancasters - timber sliding sash window


With a number of paint, stain, glazing and furniture options the window can be customised to perfectly match the style of your home.

Traditional Timber Windows in 5* Hotel

Enhanced Durability

Frame linings have always been a vulnerable point. To overcome this we only use Accoya® timber linings which provide greater durability.

Wooden sliding sash window on curved frontage

Design Options

As standard we offer a number of layout options, including curved fronted windows and arch tops.

Sliding Sash Window - Astragal Bars

Astragal Bars

For period matching, we can incorporate astragal bars to each sliding sash window design.


We know that replacing wooden windows and doors can be a big undertaking, and so we offer a range of services to make the undertaking as simple and pain-free as possible.


Our industry leading manufacturer backed guarantees ensure that our windows and doors will last for many years.

  • 10 Year Glazing Unit Guarantee
  • 10 Year Hardware Guarantee
  • 30 Year Wood Preservative Guarantee
  • 7 Year Stain Coating Guarantee
  • 10 Year Paint Guarantee
  • 10 Year Weather Seal Guarantee