![](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2024/05/skyline-sliding-patio-carminati-1-e1716241845510.jpg?fit=1920%2C1571&ssl=1)
The thinnest window frames
The new generation of windows and doors is here, with frames as thin as 3.7 cm they are the thinnest wooden and composite windows in the UK! The ultra slim frames maximise the glass area, flooding your space with natural light and removing the boundary between interior and exterior.
Now you can have large opening architectural windows with extreme energy efficiency for a safe and warm home all year round. You can enjoy the natural warmth of timber for the exterior or choose to upgrade to an aluminium cladding for a maintenance-free service life.
Windows for life
Exceptional expected lifetime of 60+ years with up to 10 years of warranty and minimal to no maintenance
Sustainable & eco friendly
Handmade in Italy with responsibly sourced timber from PEFC-certified forests
Endless design freedom
Large opening sashes, numerous opening types and countless design and finish options available
Superb energy efficiency
Оutstanding U-values as low as 0.8 W/m2K thanks to cutting-edge technology
![Ultra slim wooden windows Large opening 4m height Eterno](https://i2.wp.com/eterno-uk.com/wp-content/uploads/2024/05/3.jpg?fit=1280%2C960&ssl=1)
Quality, design and innovation
Enquire nowExplore our range
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Composite windows & doors
Our bespoke alu clad windows push the boundaries of engineering with extreme energy efficiency, durability, and unmatched aesthetics.
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No maintenance required
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The thinnest aluminium wood frame in the UK – from 3.7 cm
- Passive House and beyond – overall U values down to 0.8 W/m2K
![Ultra slim wooden windows curved arched windows Eterno](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2024/05/5-1.jpg?fit=1920%2C1440&ssl=1)
Wooden windows & doors
The result of world-leading Italian design and years of research and expertise have lead to the creation of the ultimate wooden window.
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Choose from 6 wood types – oak, larch, fir, mahogany and more
- High-resistance timber finishes with up to 10 years warranty
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Endless design possibilities
![bespoke timber windows replacement London Eterno before and after](https://i0.wp.com/eterno-uk.com/wp-content/uploads/2024/07/website-review3-1.png?fit=1360%2C700&ssl=1)
Our Happy Customers
“Smooth Process, Excellent Product!”
“Working with Eterno was smooth and efficient. The design and specification process was seamless due to the attentive and knowledgeable team.
The windows they provide are not only attractive but also highly functional. They offer superb insulation and impressive soundproofing. We are very satisfied with the overall experience. Highly recommended!”
– Mrs Anja, Regent’s Park, London
Bespoke wooden and composite windows
![French doors and windows](https://i0.wp.com/eterno-uk.com/wp-content/uploads/2021/10/french-door.jpg?resize=500%2C500&ssl=1)
French doors and windows
Timber and Alu clad French doors maximise the light flow and allow for an easy transition into your garden or balcony
![Tilt and turn windows](https://i2.wp.com/eterno-uk.com/wp-content/uploads/2024/05/20230518_174016-ezgif.com-optijpeg-scaled-e1716241629647.jpg?resize=500%2C500&ssl=1)
Tilt and turn windows
Modern tilt and turn windows opening inwards. Perfect for ventilation and easier to clean compared to outward opening windows
![Sliding doors with lift and slide](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2024/05/Villa-Desenzano-4.jpg?resize=500%2C500&ssl=1)
Sliding doors with lift and slide
External sliding glass doors with a smooth and easy-to-open mechanism and a sleek, no-barrier threshold into the outdoors
![Vertical pivot doors](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2021/09/Villa-Costa-Smeralda-1-1-e1716243309837.jpg?resize=500%2C500&ssl=1)
Vertical pivot doors
Make a bold design statement with our stunning pivot front doors. They’re ideal for contemporary, high-end projects
![Glass curtain wall](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2024/05/skyline-facade-carminati1.jpg?resize=500%2C500&ssl=1)
Glass curtain wall
Full glass, timber and Alu clad architectural façade glazing systems for spectacular residential and commercial buildings
![Patio doors](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2024/05/1-1.jpg?resize=500%2C500&ssl=1)
Patio doors
Superior quality system to guarantee the highest patio door security for your property without compromising on the design
![Picture windows](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2024/05/Villa-Brescia-1-1.jpg?resize=500%2C500&ssl=1)
Picture windows
Enjoy breath-taking, unobstructed views in your home with our architectural frameless or minimal frame picture windows
![Bi-fold doors](https://i0.wp.com/eterno-uk.com/wp-content/uploads/2024/05/skyline-bifold-carminati1.jpg?resize=500%2C500&ssl=1)
Bi-fold doors
Superior quality, high-performance bi-folding doors creating an indoor/outdoor experience in traditional design properties
![High end italian window manufacturing by hand](https://i1.wp.com/eterno-uk.com/wp-content/uploads/2024/05/testing-window-carminati.jpg?fit=1920%2C1084&ssl=1)
Designed and handmade in Italy
Manufactured by a 120-year-old family business with a history of innovation and design.
Carefully handmade by skilled craftsmen, allowing you to fully customise your bespoke windows and doors.
Let’s talk about your project
Get in touch today and our window experts will answer all of your questions. We’ll come up with a bespoke solution that best fits your project so we can help turn your vision into a reality!
Enquire today