Rationel Windows

Your home is unique, and your windows should be too. From the way the light gathers at dawn to the flow of air during a hot summer, every element should complement your lifestyle.


AURA AND AURAPLUS - Their modern windows are characterised by clean lines and minimalistic design. They are well suited to contemporary construction and Scandinavian feel.

FORMA AND FORMAPLUS - Their traditional windows are characterised by their unique detailing. Discover this traditional range that is well suited to any construction that aims for the traditional British architecture in a classic style.

Rationel Doors

Characterised by their superb high quality and performance, Rationel Scandinavian doors are designed for the modern world. Make from sustainable-sourced timber, they demonstrate a high level of energy and thermal efficiency, ensuring warmth throughout the winter months and amplifying daylight all through the year.

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Contact Thames Windows & Doors Ltd by phone 020 7205 2444