Rationel composite windows combine natural timber interiors with durable aluminium exteriors, offering the ideal blend of elegance, performance and longevity. Inspired by Scandinavian design, they maximise natural light, thermal efficiency and everyday comfort — perfect for both traditional and modern homes.
Each window is made to order and crafted with care, from glazing and colour to opening style and hardware. The result is a precision-engineered product tailored to your space, built to perform beautifully for years to come.
The Aura range is designed for modern homes, offering sleek lines and flush edges for a clean, contemporary look. Aura features exposed timber inside and out, while AuraPlus includes an aluminium-clad exterior for added durability and minimal maintenance.
With gently rounded edges and traditional proportions, the Forma range is ideal for period properties and rural homes. Forma is made entirely from timber, while FormaPlus combines a timber interior with a weatherproof aluminium exterior for a classic look with modern performance.
Rationel windows are built to perform, offering U-values as low as 0.79W/m²K with triple glazing. Timber is sustainably sourced and FSC® certified, and all units are designed for optimal thermal and acoustic comfort.
As approved Rationel partners, Burgess Windows and Doors ensures your windows are expertly installed and built to last. We work with the full Aura and Forma range, helping you find the right match for your style, performance, and budget needs.
Our in-house team delivers outstanding workmanship and personal service — whether you’re building from scratch or upgrading existing windows.
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