Rationel Windows

Rationel Windows Rationel Scandinavian windows bring together daylight, beauty and warmth to truly amplify your happy home.

Highly energy-efficient as standard, all of our windows and doors are made entirely bespoke, to create something that’s perfectly suited to you. Manufacturers of high quality, low energy Danish timber and aluminum clad timber composite windows and doors. Experienced in PassivHaus, we achieve Uw-values as low as 0.7W/m2K

For a quote please call 01480 759 511 or email [email protected]

Choose carefully, and the right windows and doors can improve the sustainability of your renovation or new build - and y...
07/01/2026

Choose carefully, and the right windows and doors can improve the sustainability of your renovation or new build - and your life at home afterwards.
Rationel windows and doors:
🗹 are designed to minimise environmental impact
🗹 are crafted with a focus on quality, long operational lifetime and reduced carbon footprint
🗹 feature FSC®-certified wood
🗹 use materials 93% of which can be recycled
🗹 are Indoor Climate Label certified
🗹 undergo extensive durability testing

Go on, download a brochure. No charge🌎

Rationel: Save money – and energy – with sustainable windows 💷♻️

https://rationel.co.uk/wp-content/uploads/sites/2/2025/01/2025-01-03-RationelBrochure-Webversion.pdf

New year, new project? Check out architect-recommended Rationel windows and doors. To keep things nice and simple, they ...
01/01/2026

New year, new project? Check out architect-recommended Rationel windows and doors. To keep things nice and simple, they come in just two styles: AURA/PLUS for modern new-builds and FORMA/PLUS for period properties. Browse our case stories to see how our products have transformed homes from Edinburgh to Essex. You’re most welcome! And, oh, Happy New Year!😉

Rationel: Helping everyone get more out of home🏡

https://rationel.co.uk/case-stories/

Feeling all warm and cosy this winter? We’re proud as peacocks that our windows and doors are helping customers maximise...
23/12/2025

Feeling all warm and cosy this winter? We’re proud as peacocks that our windows and doors are helping customers maximise the potential of their homes. Wishing one and all a very happy, snugly holiday season 🦚🎄

Rationel: Home is where the heart is🏡❤️

https://rationel.co.uk/

Introducing Rationel timber-framed, alu-clad windows:• High quality softwood sourced from sustainable northern European ...
17/12/2025

Introducing Rationel timber-framed, alu-clad windows:

• High quality softwood sourced from sustainable northern European forests
• Aluminium profiles that protect the timber and extend the lifetime of the windows
• Great weather and burglar protection
• Low maintenance - no repainting needed!
• Available in multiple colours, shapes, finishes and glass options to suit any property - new or old

You see how we spoil you?😉

Rationel: Your experts in daylight🌞

https://rationel.co.uk/guidance/alu-clad-windows/

This standout little home sits within a landscape of lagoons and shingle banks in Pagham, West Sussex. It is of straw ba...
12/12/2025

This standout little home sits within a landscape of lagoons and shingle banks in Pagham, West Sussex. It is of straw bale construction and designed across two single-storey buildings in keeping with its diminutive neighbours. Best of all are the rather nice Rationel AURA windows – in some unexpected sizes and formats 🪟🏡

Read more 👉: https://rationel.co.uk/inspiration/home-on-a-sussex-shingle-bank/

Rationel: Creating the best setting for everyday life😊

With their classic-style profiles, glazing bars and beads, Rationel’s FORMA and FORMAPLUS timber and alu-clad windows an...
03/12/2025

With their classic-style profiles, glazing bars and beads, Rationel’s FORMA and FORMAPLUS timber and alu-clad windows and doors are designed to complement British period property styles. They offer a traditional look with all the advantages of modern manufacturing techniques. Want to know more? From materials and accessories to colours and finishes, we’re here to guide you 🪟🤝

Rationel: Happy to help

https://rationel.co.uk/guidance/forma-formaplus/

Here are 6 reasons to pick Rationel windows and doors for your project:• highly energy efficient as standard• iconic Sca...
26/11/2025

Here are 6 reasons to pick Rationel windows and doors for your project:
• highly energy efficient as standard
• iconic Scandinavian design tested against Nordic winds and low temperatures
• 60+ years of product innovation and development
• sustainably sourced FSC®-certified wood
• exceptional craftsmanship
• manufactured for quality, long operational lifetime and a reduced carbon footprint
Lots more where these came from but, shucks, we don’t like to (overly) blow our trumpet. Go on. Download a brochure 😊🌎
Rationel: An investment in your home, your family and your shared future

https://rationel.co.uk/brochures/

After windows and doors with minimal frames and maximum glazing? A sleek, contemporary feel? In all-timber or with timbe...
19/11/2025

After windows and doors with minimal frames and maximum glazing? A sleek, contemporary feel? In all-timber or with timber-clad aluminium? Double or triple glazed? Funny you should ask: Meet our Rationel AURA/PLUS range ✅👍
Rationel: Going the extra mile for bespoke solutions

👉 Read all about it: https://rationel.co.uk/guidance/aura-auraplus/

This gem of a brick-and-flint home in Saffron Walden, Essex began life as a two-up, two-down. Thanks to a small but inge...
12/11/2025

This gem of a brick-and-flint home in Saffron Walden, Essex began life as a two-up, two-down. Thanks to a small but ingenious extension project, it now has ensuite bathrooms upstairs and an enlarged and rejigged downstairs layout. Proud as punch to say, though, that it’s the Rationel FORMAPLUS windows with standout glazing bars that the visitors can’t stop talking about 🪟🏡
Rationel: Release your home’s potential
👉 Read more: https://rationel.co.uk/inspiration/saffron-walden-extension-and-refurb/

Passivhaus is a rigorous voluntary standard for energy efficiency in buildings requiring windows that demonstrate greate...
05/11/2025

Passivhaus is a rigorous voluntary standard for energy efficiency in buildings requiring windows that demonstrate greater efficiency than standard designs. We are proud as peacocks to point you to our aluminium-clad AURAPLUS installation at a new-build home, The Cut, in Stroud. The little beauty costs less than £100 a year to heat 🦚

🏡Rationel: Here for the generations to come

👉 https://rationel.co.uk/guidance/passive-house/

Known for its iconic Danish design and attention to detail, every year Rationel crafts and delivers over 350,000 windows...
29/10/2025

Known for its iconic Danish design and attention to detail, every year Rationel crafts and delivers over 350,000 windows for new-build and renovation projects around the world. By turning homes into little spaces of calm, we believe our windows and doors change the way people live😊

🏡Rationel: Going the extra mile for bespoke solutions

👉 Read more about us: https://rationel.co.uk/about-rationel/

Exciting News from the Homebuilding & Renovating Show in Harrogate! We’re thrilled to have our trusted distributor, AJS,...
28/10/2025

Exciting News from the Homebuilding & Renovating Show in Harrogate!

We’re thrilled to have our trusted distributor, AJS, exhibiting at the show for the three days, showcasing the latest Velfac and Rationel windows and doors. If you're planning a home project or just looking for inspiration, visit the AJS stand to see these premium products up close!

Supporting to AJS team will be, Dovista Business Manager, Will Preston he will be available to answer your questions and help you find the right solution. Don’t miss this chance to connect with experts in the industry!

📅 When:
Friday, 31st October 2025 – 10am to 5pm
Saturday, 1st November 2025 – 10am to 5pm
Sunday, 2nd November 2025 – 10am to 4:30pm

📍 Where: Harrogate, Homebuilding & Renovating Show

Address

The Forum, Ermine Business Park, Lancaster Way
Huntingdon
PE296XU

Opening Hours

Monday 9am - 5pm
Tuesday 8am - 5pm
Wednesday 8am - 5pm
Thursday 8am - 5pm
Friday 8am - 5pm

Telephone

+441480759511

Website

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