Korniche

Transforming living spaces with award winning designs that are quick and easy to install.

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Guarantee

10 year guarantee

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Trusted Installer

Over 30 years of combined experience

Stunning Bi-Fold Doors & Roof Lanterns

When it comes to flooding your home with natural light, Korniche stands out as one of the UK’s leading manufacturers of premium roof lanterns and bifold doors. Renowned for combining sleek, contemporary design with outstanding thermal performance, Korniche products are engineered to deliver maximum glazed areas with minimal sightlines, creating a striking, almost frameless appearance that effortlessly blends indoor and outdoor living spaces.

Every Korniche roof lantern and bifold door is manufactured using high-grade aluminium, ensuring exceptional strength, durability, and weather resistance, while advanced thermal breaks keep your home warm and energy-efficient all year round. With a choice of stylish finishes and configurations to suit any property, Korniche offers the perfect balance of style, security, and performance. At JMF Windows, we’re proud to supply and install Korniche products, bringing this award-winning quality directly to your home.

JMF Windows & Doors Oxford

5.0

Based on 116 reviews

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Luchian Alina

3 months ago

Brilliant work, mindful of the property and cleaned everything after them. I can't recommend them enough!

Caz

4 months ago

Once again a fantastic job well done. I can’t fault this company and the work completed. I’m looking forward to getting more windows altered/improved.
Thank you

Adam

4 months ago

JMF have done a super job of replacing our old conservatory with a brand new 'warm roof' version. Easy to talk with and delievered exactly what was promised. I have used JMF twice now and would recommend to anyone needing this kind of work done!

Kevin Dighton

4 months ago

Would highly recommend JMF Windows. We used them on one of our projects and received excellent service from start to finish. The windows and doors looked brilliant, and they managed to keep to the agreed timescales, helping to move the project along smoothly.

Gary Bennell

4 months ago

We recently had some of our very old windows replaced by JMF Windows & Doors and are extremely pleased with the work completed.

From the outset, the service was excellent. Paul visited to prepare a quote, which we received the same day. After accepting, Jake carried out a detailed measure and clearly explained the process, lead times, and logistics, which was very helpful.

The fitting team were friendly, professional, and respectful of our home - taking care to protect carpets and work areas while keeping everything clean and tidy throughout.

The finished result is excellent. The new windows look fantastic and have already made a noticeable difference to our home.

We would highly recommend them.

Claire

5 months ago

Our experience of JMF windows has been excellent from start to finish. We are extremely happy with the quality of our new doors and windows. Jake was very helpful in suggesting which options were best for our house. Fitting was completed efficiently by Dan and Mark to a very high standard. A big thank you to all the JMF team a fantastic job we highly recommend you

Alistair Tilney

5 months ago

We’ve had such a great experience with JMF Windows. The whole team at JMF are all so friendly, professional and genuinely helpful. They gave us great advice from the start and made the whole process really straightforward.

We’re so happy with our new windows and the quality of the work is excellent. We’re already looking at getting our front door done with them as we honestly wouldn’t go anywhere else. Completely trustworthy and a pleasure to deal with from start to finish.

Thanks guys

Guillaume Berdeaux

6 months ago

Absolute exceptional service from start to finish!
We had our dream door for our house installed by JMF. Jake came round to see us and was wonderful to work with. He knew exactly what we were looking for and made the process seamless. The installation team also were absolutely brilliant and highly professional from start to finish. Great communication and time efficient.
We couldn’t highly recommend this company more and I’m glad we found them! Rabia & Guillaume

charlotte Trinder-jones

8 months ago

Absolutely over the moon with our new front door! ✨

From the very start of designing to the final fitting, Jake and his lovely team have been nothing but professional, helpful, and genuinely amazing. The whole process was so smooth, and the end result is perfect.

I would 100% recommend them to anyone looking to upgrade their home! 🏡💫

Paul Howarth

11 months ago

Fantastic job! I had a door installed in place of a window. Communication was excellent throughout the job with Jake and Paul both visiting for measurements and to check things over before Dan and Bash did the installation. They were efficient, neat, clean and tidy which is a huge bonus in my opinion and took all the rubbish away. The job took a day and the end result was excellent. I would highly recommend JMF and will definitely use them again.

Why Choose Korniche?

Choosing Korniche means investing in a product that delivers on both style and substance. Here’s why homeowners across the UK trust Korniche for their roof lanterns and bifold doors:

Sleek, slimline sightlines for a modern, frameless look
High-grade aluminium construction for superior strength and longevity
Advanced thermal breaks for excellent energy efficiency
Weatherproof design built to withstand the British climate
Wide range of finishes and configurations to match any home
Trusted, award-winning British manufacturer with proven quality