Fixed Light Timber Windows Manufactured in the UK
Our bespoke fixed light timber windows are handcrafted in the UK to maximise natural light, uninterrupted views and thermal performance.
Designed as non-opening glazed units, these made-to-measure timber windows are ideal for feature glazing, gable-end windows, stairwells, extensions and contemporary architectural projects where clean sightlines and large glazed areas are important.
Manufactured using premium sustainably sourced timber and high-performance glazing systems, our fixed light windows combine modern efficiency with the warmth and character of traditional timber joinery.

Non-Opening Timber Windows for Maximum Natural Light
Fixed light timber windows are specifically designed to provide expansive glazing areas without the need for opening sashes or visible operating hardware.
Because the window does not open, it delivers exceptional airtightness, improved thermal performance and clean uninterrupted sightlines.
Our bespoke fixed light timber windows are suitable for:
- Feature glazing
- Contemporary home extensions
- Gable-end windows
- Stairwells and vaulted spaces
- Modern architectural homes
- Self-build projects
- Traditional and contemporary renovations
- Pairing with casement or sash windows
Why Choose Fixed Light Timber Windows?
Fixed light windows remain one of the most effective ways to maximise natural light while maintaining excellent thermal performance and clean architectural lines.
Unlike opening windows, fixed glazed units provide improved airtightness and allow for larger uninterrupted glazing areas, making them ideal for modern architectural designs and feature elevations.
Our fixed light timber windows offer:
- Maximum natural light
- Excellent thermal efficiency
- Clean uninterrupted sightlines
- Large-format glazing capability
- Fully bespoke sizing and layouts
- Premium timber construction
- Factory-applied protective finishes
- Suitable for modern and traditional properties
Accoya® and engineered timber options also provide exceptional dimensional stability and resistance to movement for enhanced long-term performance.
Design & Performance
Our fixed light timber windows are manufactured through our flush casement system, creating a clean and refined appearance with slim sightlines and excellent structural stability.
The non-opening design allows for improved airtightness and thermal efficiency while maintaining a balanced architectural appearance.
These windows are ideal for:
- Maximising natural light
- Large or feature glazing areas
- Contemporary extensions and renovations
- Gable ends and vaulted spaces
- Pairing with opening casement or sash windows
Key Features
- Non-opening design for maximum light and airtightness
- Slim modern sightlines through our flush casement system
- Excellent thermal performance with double or triple glazing
- Suitable for modern, traditional and conservation-style properties
- Manufactured from premium sustainably sourced timber
- Fully bespoke sizing and detailing
- Manufactured in the UK
Suitable for Projects Large & Small
We manufacture bespoke fixed light timber windows for projects throughout the UK, including:
- Single feature windows
- Home extensions
- Self-build homes
- Architect-designed properties
- Modern renovations
- Gable-end glazing
- Large-format glazing projects
- Full-house window packages
Timber Options
We offer a wide range of premium timber species suitable for bespoke external joinery applications, including:
- Redwood with hardwood cills and glazing beads as standard
- Accoya®
- Sapele
- European Oak
- Douglas Fir
- FSC® certified timber options
Additional timber species may also be available depending on project requirements.
Glazing Options
All glazing is manufactured to order to suit the thermal, acoustic and aesthetic requirements of your project.
Available glazing options include:
- 24mm double glazing as standard
- Triple glazing
- Acoustic glazing
- Laminated safety glass
- Toughened safety glass
- Decorative and obscured glazing
Slimline heritage glazing and vacuum glazing are not typically available for this window type.
Hardware Options
As fixed light windows do not open, hardware requirements are minimal. Optional features include:
- Dummy casement hinges to match adjacent opening windows
- Decorative glazing bars
- Trickle vents where required
Factory Finishing Options
Our fixed light timber windows can be factory-finished in over 45,000 colour options, allowing us to match virtually any architectural style or design scheme.
Dual-colour and mixed-finish options are also available where contrasting internal and external finishes are required.
Each window is completed using our advanced spray-finishing system, consisting of:
- Preservative base coat
- Three spray-applied coats of microporous paint
- Breathable long-lasting protective finish
All finishing is applied in our purpose-built spray booth for smooth, consistent coverage and long-lasting protection against the elements.
Stained, clear and tinted finishes are also available to highlight the natural beauty of the timber.
Bespoke Joinery Capabilities
As a bespoke joinery manufacturer, we can produce fully customised fixed light timber windows tailored to your project requirements, including:
- Large-format fixed glazed units
- Shaped and arched frames
- Custom glazing bar layouts
- Conservation-grade detailing
- Profile matching for refurbishment projects
- CAD drawings for approval
Lead Times
Typical lead times for bespoke fixed light timber windows are approximately 6–8 weeks depending on project size, specification and finishing requirements.
Estimated lead times are confirmed at quotation stage.
Request a Quote for Fixed Light Timber Windows
Whether you require a single feature window or a complete bespoke window package for a larger project, our team will be happy to assist.
Send us your drawings, measurements, schedules or project details and we will prepare a detailed quotation tailored to your specification.
Call us on 0191 535 9563 or email info@timbermouldingsdirect.co.uk.