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]

Rationel’s outward-opening casement doors offer a streamlined alternative to standard patio doors. The slim construction...
04/09/2025

Rationel’s outward-opening casement doors offer a streamlined alternative to standard patio doors. The slim construction means maximum light levels, an inbuilt friction brake allows you to secure the doors in any position and there’s a minimum three-point locking bolt for added peace of mind. What’s more, they can be designed for either modern builds or more traditional properties 😊👍

Rationel: opening up with daylight



https://rationel.co.uk/doors/casement-doors/

Midsummer meltdown? Rationel sun-shielding Solar tinted glazing helps prevent overheating by reducing the amount of ligh...
27/08/2025

Midsummer meltdown? Rationel sun-shielding Solar tinted glazing helps prevent overheating by reducing the amount of light and heat coming into a home.
• Prevents glare from the sun and unwanted reflections
• Ideal for south or west-facing rooms and conservatories
• Reduces the need for artificial cooling, cutting energy bills
• Helps create a comfortable indoor environment
• Almost identical in colour to standard glass
Rationel: save money – and energy – with sustainable windows 🌞😎



https://rationel.co.uk/guidance/glazing-options/solar/

All Rationel windows and doors carry the Indoor Climate Label, proof that our products contribute to a healthy, comforta...
20/08/2025

All Rationel windows and doors carry the Indoor Climate Label, proof that our products contribute to a healthy, comfortable home. Daylight is essential for wellbeing and our slim frames maximise light transmittance, boosting mood and the ability to concentrate. We also offer acoustic control glass to reduce the levels of perceived noise for people living in busy cities. We know. We think of everything 😊
Rationel: daylight = wellbeing



https://rationel.co.uk/guidance/sustainability/people/

Alu-clad windows from Rationel combine the warmth of timber with the durability of aluminium.✅ Natural wood on the insid...
13/08/2025

Alu-clad windows from Rationel combine the warmth of timber with the durability of aluminium.

✅ Natural wood on the inside
✅ Weather shield of aluminium on the outside
✅ Minimal maintenance
✅ Great weather (and burglar) protection
✅ Last over 20 years longer than all-timber windows
✅ 2 frame designs to choose from
✅ Double or triple-glazing
Rationel: passing on solid Danish design solutions 😉



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

Your home will thank you for Rationel’s FORMA/FORMAPLUS range. Classic, traditional style timber/aluminium windows and d...
06/08/2025

Your home will thank you for Rationel’s FORMA/FORMAPLUS range. Classic, traditional style timber/aluminium windows and doors in a wide choice of finishes and colours. Bedding in beautifully at Long Cottage in Shilton, Oxfordshire as you can see 😉🏡

Rationel: windows with a long lifespan that look nice too



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

Unlike the side-hung window, Rationel’s side-guided version has an adjustable sash that moves towards the middle when op...
30/07/2025

Unlike the side-hung window, Rationel’s side-guided version has an adjustable sash that moves towards the middle when opened. This means:
🗹 Minimalist good looks with no visible external hinges
🗹 Both sides of the glass are easy to clean from the inside
🗹 Simple, seamless operation
🗹 Excellent ventilation
You see how we spoil you? 😊😉

Rationel: we listen, learn and get better every day



https://rationel.co.uk/windows/side-guided-windows/

Why choose Rationel windows? Well let’s see… 1. Iconic Scandinavian design 2. Sustainably sourced timber 3. Exceptional ...
02/07/2025

Why choose Rationel windows? Well let’s see…
1. Iconic Scandinavian design
2. Sustainably sourced timber
3. Exceptional craftsmanship
4. High performance thermal efficiency
5. Built to last for decades - and to be enjoyed for generations
6. Build It Live 2024 Best Casement Window Award 👍

Rationel: framing our everyday lives

https://rationel.co.uk/windows/

Kerb appeal: totally transform those first impressions with a new glazed entrance door. Brown, you say? Black? Not a bit...
25/06/2025

Kerb appeal: totally transform those first impressions with a new glazed entrance door. Brown, you say? Black? Not a bit of it… Up the jollity with a pretty shade like they did here in Colourful Cambridge. Marvellous 🚪🗝️🏡

Rationel: always there for you – and your project

https://rationel.co.uk/doors/glazed-entrance-doors/

Booked your summer break yet? The Little Comfort Farm and Rewilding Project in Braunton, north Devon, offers four sustai...
18/06/2025

Booked your summer break yet? The Little Comfort Farm and Rewilding Project in Braunton, north Devon, offers four sustainably restored, low energy stone holiday cottages set in 70 acres of meadow and ancient woodland. There are original stone walls, slate roofs, timber beams, solar panels, and - oh yes - some rather nice, architect-recommended AURAPLUS Anthracite Grey windows 😉😎

Rationel: save money – and energy – with sustainable windows

https://rationel.co.uk/inspiration/little-comfort-farm/

Have you seen Rationel’s AURAPLUS tilt-and-turn windows? The versatile little fellas open two ways: from the top and fro...
11/06/2025

Have you seen Rationel’s AURAPLUS tilt-and-turn windows? The versatile little fellas open two ways: from the top and from the side. Best of all, they open inwardly, which means safe and easy cleaning from the inside and the prospect of shutters on the outside. We call them our windows of opportunity!

Rationel: your experts in daylight

https://rationel.co.uk/windows/tilt-and-turn-windows/

Many of our trusty and knowledgeable distributors have local showrooms with Rationel window and door displays. Why not d...
03/06/2025

Many of our trusty and knowledgeable distributors have local showrooms with Rationel window and door displays. Why not drop by? Getting up close and hands-on with the options helps narrow down the style and opening types that will work for your project. Get in touch and we’ll find your nearest showroom👍😊

Rationel: happy to help

https://rationel.co.uk/visit-a-showroom/

Overwhelmed by choice when it comes to new windows and doors? At Rationel we keep it simple: ✔️Timber and composite prod...
09/04/2025

Overwhelmed by choice when it comes to new windows and doors? At Rationel we keep it simple:
✔️Timber and composite products only – no uPVC
✔️1 contemporary range
✔️1 traditional range
✔️1 architect-designed handle
Just pick your colour or finish. There. Doesn’t that feel better?😉🏡
Rationel: Always there for you and your project

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

Address

Huntingdon

Opening Hours

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

Telephone

+441480759511

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