Rationel Aura for outstanding architectural elegance and thermal performance

Designed with low-energy and Passivhaus standards in mind, our Aura timber windows from Rationel offer the latest products for modern living environments. The triple glazed windows dramatically reduce CO2 emissions, and are at the forefront of modern energy-optimised home improvements. The Aura range of windows is manufactured using beautiful solid timber. This offers the natural beauty of wood, but with effective finishes that reduce maintenance hassle and increase durability.

Rationel forma is the all-timber window system that offers traditional homes all the advantages of modern energy efficiency

Engineered fully using modern solid timber construction techniques, our Forma windows feature slim and non-continues bars that makes them the ideal choose for older and classic properties that wish to be refurbished and want to benefit from optimal thermal retention and energy efficiency. Every Forma window we provide comes readily available in a range of sophisticate colours which only serves to complement the modern architectural profiles of the window option, allowing for a great degree of personalisation and customisability whilst retaining the home’s classic appeal and charm.

Features and benefits to aid both homeowners and architects

  • Approved Rationel installers
  • Aura ranges to suit all building designs
  • Choices include sash, casement and tilt and turn styles
  • Impressive aesthetics, with modern performance
  • Latest energy-efficient options available
  • Range of timber choices and finishes
  • Team of experts offering a reliable and efficient service
  • Recyclable materials used – no need to worry about the impact on the wider environment

Styles, colours and finishes to
Suit any project

Let your home improvements reflect your personality and the character of your home.

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Backed by our
10 year guarantee

You can gain peace of mind thanks to the guarantees that come with our installations.

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View our colour options


cream white

light grey

silver grey

slate grey

Anthracite Grey

mid grey


dark brown

olive green

navy blue


pebble grey


Beige Grey

dark green

blue black

white saa10f

gris 2150

gris 2400

gris 2900

noir 2100

noir 900


Made to measure and completely bespoke installations.

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As a family-run company, we offer this service for true peace of mind.

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Ensure you make the most of your new home, with our advice.   

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Free Surveying

We offer no obligation site visits and surveys for a simple sales process.

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