Douglas & Peters’ Sliding Sash Windows combine the timeless elegance of traditional sash windows with the performance and reliability expected of modern timber joinery.

Available in both classic weight and pulley box sash and the increasingly popular spiral balance system, our bespoke sliding sash windows are suitable for everything from heritage restorations and listed buildings to high end new build properties. The spiral balance option offers a slimmer frame profile, making it particularly well suited to contemporary projects where traditional aesthetics are desired alongside modern convenience.

As standard, both systems are enhanced with an Accoya® cill and fascia to the entire external surround, providing exceptional durability and a 50 year guarantee against rot and fungal infection. Manufactured to order in our workshop in Bacup, each window is handcrafted to exacting standards and supplied to homeowners, architects and property developers throughout the UK.

Why Choose Sliding Sash Timber Windows?

Sliding sash windows remain one of the most iconic features of British architecture, bringing character, elegance and proportion to both period and contemporary properties.

At Douglas & Peters, our bespoke timber sash windows retain the authentic appearance of traditional joinery while incorporating modern glazing, high performance timbers and advanced finishing systems. The result is a beautifully crafted window that offers classic aesthetics, smooth operation and excellent long term performance, making it an ideal choice for homeowners, architects and developers seeking a truly timeless solution.

Our sliding sash windows are manufactured using carefully selected timber options including Engineered Redwood, Accoya® and Red Grandis, allowing clients to choose the material best suited to their project and performance requirements.

Key features include engineered timber construction, a 163mm x 67mm frame section, concealed trickle vents, optional Part Q compliant glazing, a wide range of ironmongery options, a durable three coat factory applied paint finish and 24mm double glazed units as standard.

Douglas & Peters uses advanced water based coating systems that allow the timber to breathe naturally while providing long lasting protection. We can match virtually any RAL, British Standard, Dulux or Farrow & Ball colour, with painted, stained and dual colour finishes available.

All windows are manufactured to deliver outstanding durability, thermal performance and the authentic appearance expected from premium quality timber sash windows.