Flush Casement Windows

Glyngary flush casement windows deliver a timeless, understated aesthetic ideal for period homes and contemporary properties alike. The window sash sits flush within the frame for a seamless appearance, crafted in Accoya® as standard or hardwoods on request. These high-performance timber windows are built to last for more than 70 years, offering long-term value, excellent energy efficiency, and handcrafted detailing that complements any project.

Our flush casement windows are expertly handcrafted in Cheshire using twin mortice and tenon sash joints for superior strength and precision. We use aluminium, colour-matched trickle vents with a near-invisible flush fit, and finish each window with a three-coat Teknos spray system. Externally beaded, security-taped glazing comes as standard. Each unit is assembled by our skilled joiners with seamless corners and traditional care at every stage.

Available Colours:

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Our flush windows are hand crafted to perfection, offering a traditional look outside the property with the window sash finishing flush with the frame. We offer flush windows with Yale shootbolt locking & friction hinges which can be PAS24 compliant, or with peg-stays, fasteners & butt hinges for a traditional look. Available with both double & triple glazing.

Conservation areas

Flush casement windows are particularly well-suited to conservation and heritage areas. Our slimline options and period-appropriate detailing ensure a sympathetic appearance, while modern manufacturing techniques deliver thermal and acoustic performance. We can provide CAD drawings and liaise with conservation officers where needed to help your project meet planning requirements with confidence.

Key product features:

Flush sash design for a clean, traditional look
Made from Accoya® or hardwood (on request)
Seamless mortice & tenon sash joints
Aluminium trickle vents with flush, colour-matched finish
Three-coat factory paint finish in any RAL or heritage colour
Dual-colour options available (different inside/outside)
Externally beaded with security taped glazing
Peg stay & butt hinge or shootbolt/friction hinge options
Wide choice of cill and outerframe sizes

Shootbolt & friction hinge option

Yale multi point shootbolt lock with night vent position
Choice of 7 shootbolt window handle styles, from 2 suppliers, in multiple finishes
High security friction hinges, egress as standard on all side openers
1.2 whole window U value with double glazing
0.73 whole window U value with triple glazing

Peg-stay & butt hinge option

Traditional looking peg-stay, fastener &
Choice of 4 hardware styles, from 2 suppliers, in multiple finishes
1.2 whole window U value with double glazing
0.68 whole window U value with triple glazing

Peace of mind guarantee

For four decades we’ve perfected the raw materials we buy and the joinery techniques we use to allow us to confidently offer ‘peace of mind’ guarantees to be proud of. All guarantees shown below are for timber windows & doors made using Accoya, in accordance with our maintenance guidelines.