Liniar

Discover premium windows, doors, and conservatories built for style, security, and energy efficiency.

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Trusted Installers

Over 30 years of combined experience

Trusted uPVC Profiles

For homeowners seeking quality, versatility, and energy efficiency, Liniar is one of the UK’s most trusted names in PVCu windows, doors, and conservatories. Renowned for its innovative multi-chambered profile system, Liniar products offer outstanding thermal performance, helping to keep homes warmer in winter and cooler in summer while reducing energy bills.

Available in a huge range of styles, colours, and finishes, Liniar’s windows, doors, and conservatories can be tailored to suit any property, from traditional homes to contemporary new builds. Built to last, Liniar products are virtually maintenance-free, resistant to warping, fading, and discolouration, and backed by rigorous testing to ensure they perform brilliantly for decades. At JMF Windows, we’re proud to offer the full Liniar range, combining exceptional quality with fantastic value for our customers.

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.

Liniar Products

Why Choose Liniar?

Choosing Liniar means choosing a product built for performance, style, and longevity. Here’s why homeowners across the UK choose Liniar for their windows, doors, and conservatories:

Multi-chambered profiles for outstanding thermal efficiency
Wide choice of colours, finishes, and styles to suit any home
Low-maintenance, durable PVCu that resists warping and fading
Enhanced security features for complete peace of mind
Rigorously tested for long-lasting performance
Excellent value without compromising on quality

Liniar

Trusted uPVC Profiles

Liniar Products

uPVC Doors

uPVC Windows

Conservatories

Why Choose Liniar?