As a leading York bespoke joinery manufacturer, we craft beautiful bespoke windows that will enhance your home for decades to come.
Our mock box windows are designed for maximum elegance and energy efficiency.
Bespoke mock box casement windows
As a leading York bespoke joinery manufacturer, we craft beautiful bespoke windows that will enhance your home for decades to come.
Our mock box windows are designed for maximum elegance and energy efficiency.
What are mock box windows?
Our mock box windows recreate the look of traditional sliding sash windows while operating as outward-opening casements. They feature two or more window units joined together by mullions in a “box” layout to mimic a sliding sash window.
The sashes appear to slide up and down but instead open like casements, providing both timeless aesthetics and modern functionality. Decorative mouldings and multipane glass complete the period-style visuals.
Our mock box windows blend the coveted charm of heritage boxes with the convenience of contemporary casements. They bring character to both historic homes and new spaces seeking a touch of historic flair.
A-rated energy efficiency – choose from 24mm double glazing or triple glazing for maximum insulation
Ideal for extensions, cottages, and new builds
Available in dual colour options to match your interior and exterior
Made to order in custom sizes to fit your space perfectly
Smooth operation and easy-to-clean
All our mock box windows are handcrafted from durable, sustainable Accoya wood.
This modified, fast-growing softwood has properties that match or exceed even the finest hardwoods.
Our mock box windows also come complete with an ultra high-performance weather and draft seal, ensuring exceptional stability and durability. Plus, the sashes are finger-jointed and rebated, guaranteeing a fully weatherproof unit.
The benefits of Accoya wood
50-year minimum rot-free guarantee
Excellent thermal insulation and coating adhesion
Sustainably sourced and Cradle to Cradle certified
Dimensionally stable and resistant to fungi and insects
Low maintenance - no need for chemical preservatives
Unlike uPVC windows that may need replacing in 10-15 years, Accoya windows are built to last generations
Factory Finish Options
Our in-house spray booth allows us to apply beautiful, long-lasting finishes to your flush casements. Choose from:
Dual colour - different interior and exterior colours
Wide range of traditional and modern opaque stains
Any RAL or BS colour paints and opaque coats
How mock box windows compare to other windows
When choosing new windows, it can be a good idea to consider how sash, standard casement, and flush casement styles complement your home's architecture.
The choice comes down to the look you love and the practical operation you desire. Our mock box windows give you the ability to seamlessly marry the two. If you're still not sure, check out our article on how to choose the perfect window style for your home.
Sash windows
The two vertically sliding sashes of traditional sash windows suit historic aesthetics. Their divided light design evokes timeless elegance.
Standard Casement Windows
Outward-opening casements suit contemporary homes with their sleek glass panes maximising natural light.
Flush Casement Windows
Flush casements combine period styling with modern performance. Their streamlined exterior replicates sash windows, yet they open outward like casements.
Mock Box Windows
Mock boxes masterfully blend sash window aesthetics with casement functionality. Mullioned units and decorative mouldings provide coveted period charm, while the sashes open innovatively as casements.
To order your bespoke mock box windows, contact us today to discuss your project.
