Casement Windows

Our flush casement windows combine timeless timber design with modern performance for homes where detail matters.

Timeless Timber. Exceptional Performance.

Crafted from premium timber and engineered to exacting standards, our flush casement windows deliver the refined appearance of traditional flush sash joinery while meeting the demands of contemporary living. Designed for heritage restorations, bespoke homes, and architectural new builds, they provide lasting comfort, security, and energy efficiency while enhancing the character of every elevation.

Colours

Explore our paint finish options. Colour Match Available on request.

Ral 7015
Slate Grey

RAL 7032
Pebble Grey

RAL 9001
Cream

RAL 9010
Pure White

RAL 7016
Anthracite Grey

RAL 9005
Jet Black

RAL 7038
Agate Grey

Hardware

Choose from a selection of premium hardware finishes:

  • Polished Chrome

  • Satin Chrome

  • Antique Brass

  • Oil Rubbed Bronze

  • Brass Finish

Friction hinges are used for side and top hung sashes, with concealed trickle vents available through the head where required.

Security

Luxury should never come at the expense of security. Ashbury flush casement windows are PAS 24:2022 certified and form part of a registered Secured by Design system.

  • Internally beaded glazing

  • Multipoint locking mechanisms

  • Fully compliant with modern building regulations

Security is seamlessly integrated, never visually intrusive.

Specification

Efficiency

Behind the timeless exterior lies advanced glazing technology that delivers outstanding thermal performance.

  • A-rated energy efficiency as standard

  • U-Values from 1.3 W/m²K, with ≤ 1.0 W/m²K achievable using triple glazing

  • Warm-edge, Low-E, argon-filled sealed units for year-round comfort

The result is a quieter, warmer, and more energy-efficient home — beautifully achieved.

Glazing

We offer a wide range of glazing solutions to suit your requirements:

  • 24mm Low-E sealed double-glazed units (4mm / 16mm / 4mm)

  • Argon-filled cavity with warm-edge spacer

  • Optional obscure, acoustic, toughened, and laminated glass

  • Double, triple, or vacuum glazing options available

  • Heritage slim-glass bead option for period-style properties

Detail

The defining feature of the Ashbury flush casement window is its perfectly flush external profile, where sash and frame sit seamlessly together. Slim sightlines maximise natural light while preserving the clean, understated character associated with classic British architecture.

Traditional detailing can be enhanced with Ovolo or Lambs Tongue glazing bars, or simplified for a more contemporary aesthetic — offering complete design flexibility without compromise.