Casement windows

At Kensington Sash Group Ltd our Timber Casement Windows are also manufactured for optimum performance, whilst retaining heritage features and period charms of a traditional window. Fully compliant with building regulations, our premium timber casement windows come fully draught sealed, spray finished with low maintenance micro porous paint- colour matching option of any Farrow and Ball or RAL colour. We offer the choice between the use of Scandinavian Slow Grown Pine or Accoya®.

Timber casement window styles include:

  • ​Flush casement windows
  • Storm proof casement windows
  • Traditional casement windows
  • Lipped casement
  • Modern design

Available with either 14mm or 24mm Argon Gas Filled 'A' Rated Double Glazing as standard.

(Please note: 4mm Toughened (ESG4) Low E with Warm Edge Spacer Bar; U-Value 1.1W/m²K available for extra sensitive conservation projects requiring single glazing.)


  • CE Marked
  • Design, Survey, Manufacture and Installation
  • Full After Care Service
  • Bespoke hardware- Available in a wide range of finishes that include, Brass, Polished Chrome, Antique Brass
  • 'Secured by Design' High Security Fasteners
  • Glass specification - Click here
  • Fully weather stripped
  • FENSA compliant
  • Timber- Scandinavian slow grown pine or Accoya®
  • Elegant glazing bars available
  • Internally Glazed- anti burglar solution
  • Excellent thermal & acoustic performance
  • Comprehensive warranties for peace of mind
  • Expert specialist fitting

Technical drawings

We can provide accurate information in CAD format to architects or council authorities for our most sensitive projects that require planning permission. Particularly listed property and conservation areas.


Casement Windows

Thermal efficiency. Opening casement sashes close tightly against the frame and an airtight seal is created by our high quality compression seals.

Good for ventilation. Casement windows have it all – thermal efficiency and good ventilation. They can open wider than other types of window, creating better airflow within a property.

Aesthetically versatile. Use glazing bars to change the aesthetic, or opt for an open construction for an unobstructed view. Even in a dual-sash casement, there is only a thin frame between the two sashes.

​​Excellent security. The locks that are used on casement windows are hook shaped and fitted into the frame, making them extra secure. You can also choose key locking handles for additional security.

A variety of finishes. Your casement windows can be made from a variety of materials that will provide different finishes and benefits depending on your preferences.

Timber casement window

Hinges are hidden inside the groove, so they are invisible when the leaf is closed. Hinges for Easy Clean or Egress system.