Non-Standard Windows
Bespoke windows not available from retail outlets
Windows that aren't available from retail outlets — odd shapes, awkward sizes, unusual openings, replacements for one-offs that no manufacturer makes anymore. This is one of the things we get called for most, particularly on period properties and converted barns and outbuildings.
If you've been told by retail installers that something can't be done, or that you'll have to compromise on the size or shape, please get in touch. We design and make to your opening, not the other way around.
Why choose Non-Standard Windows
- Any size, any shape, any timber
- Round, arched, gothic, oval and triangular forms
- Replicas of one-off historical windows
- Oversize windows beyond standard retail dimensions
- Conservation-area and listed-property approved
- Made in our workshop to fit your exact opening
Engineered for performance
- Bespoke jigs and templates per project
- Hand-cut mouldings to match existing detail
- Single, slim-DG or standard DG units curved to shape
- Brass or wrought-iron hardware to suit the style
Configurator
Mix and match colours, hardware and glass to suit your home.
Available finishes
Choose your style
- Round window
- Arched / Gothic head
- Oval
- Triangular gable
- Quatrefoil
- Bullseye
- Trapezium
- Custom geometric
Glass options
- Single glazed — heritage matched to existing
- Slim double glazed units (12–14mm) for conservation areas
- Standard 24mm argon-filled double glazing
- Triple glazing for extreme exposure or noise
- Acoustic laminated for road-facing rooms
- Toughened safety glass (BS EN 12150)
- Obscure / privacy patterns
- Stained, leaded and Georgian bar details
Furniture & hardware
- Solid brass, chrome, satin or bronze ironmongery
- Espagnolette and shootbolt locking
- Heritage monkey-tail and pear-drop handles
- Period-correct fanlight catches and stays
- Sash pulleys, lifts and sash locks (for sash windows)
- Multi-point security locking on opening lights
- Trickle vents where Building Regulations require
Tailored to your home
We start from a site survey or a hand-drawn template you provide. Curved sections are steam-bent or laminated in the workshop; complex shapes are jigged so the joinery sits true. Every window is one-off.
Property suitability
Listed buildings, period restorations, converted barns and oast houses, gable-end feature windows, ecclesiastical conversions, and any property where the original window can't be sourced from a catalogue.
How we fit it
Non-standard installations often involve reveal repairs, stone or brick lintel work, or structural prep — we coordinate any building work alongside the joinery so it's a single point of contact for you.
Frequently asked
Do you work with listed buildings and conservation areas? +
How long does it take from first call to installation? +
Do you do free quotes? +
Do you install everything yourselves? +
Where are you based and how far do you travel? +
More Bespoke Windows
Like the Non-Standard Windows? Let's talk.
Free site visits across Kent and London — get in touch to discuss your project.