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Our Rationel Aura and Forma range of products are timber windows and doors with the highest performance levels. 

The timber is glue-laminated and fully factory treated, meaning they have class-leading dimensional stability and won't rot.

Timber is sourced from sustainably managed forests holding FSC certification, so you can be sure that for each tree cut down at least one is planted, continuing the natural carbon store of the forest.

In fact, through Chain of Custody certification it is possible to pinpoint the exact harvest your window or door came from.

Fully factory finished in a huge range of RAL colours, there is no need to paint on site after installation. 

Delivered factory glazed and with all ironmongery installed and ready to use, installation is simple and pain-free.

Going without external aluminium cladding means significantly lower embodied energy.

  • Windows and doors

  • Double or triple glazed

  • Bespoke sizing to suit your project

  • Factory finished timber internally and externally

  • Sustainably sourced timber from FSC certified forests

  • Chain of Custody certification

  • Low embodied energy

  • Low life cycle cost

  • Anticipated service life of 56-65 years (verses 30 years for UPVC)

  • Secured by Design certified

  • High security, meeting Building Regulations Approved Document part Q as standard

  • Whole window U values from 1.29W/m2K (double glazed) to 0.78W/m2K (triple glazed)

  • Acoustic reduction from 34dB Rw to 42dB Rw

  • Huge range of colours available

  • Ideal for conservation areas where windows with aluminium externally are not permitted

  • Ideal for super low energy properties

Timber windows

Aura triple glazed

Aura double glazed

Forma triple glazed

Forma double glazed

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Wide range of opening types

Huge range of colours, fully factory finished

Various locking options

Contemporary (Aura) or traditional (Forma) styles

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