RATIONEL WINDOWS
Beautifully Bespoke Scandinavian Windows
Rationel windows are designed to bring in natural light, enhance energy efficiency, and add style to any home. Manufactured to the highest standards, these windows provide a seamless combination of aesthetics and performance.
Each window is custom-made, offering complete flexibility in colour, glazing, and opening functions. Whether you need a modern design or a more traditional aesthetic, Rationel windows provide the perfect balance between form and function.
Built for durability, these windows are highly resistant to wear and tear, making them an excellent choice for busy homes. The robust construction ensures long-term reliability while requiring minimal maintenance.
With options for both timber and aluminium-clad timber frames, Rationel windows offer versatility in design and performance. Timber frames provide a natural, warm finish, while aluminium cladding enhances longevity and weather resistance.
Ideal for contemporary and traditional homes alike, Rationel windows can be tailored to suit any architectural style, providing superior insulation and long-term energy savings.
TOP FEATURES
- Timber and aluminium-clad timber frame options
- Double and triple glazing for optimal thermal efficiency
- U-values as low as 0.78 W/m²K
- High-security multi-point locking systems
- Acoustic insulation up to 42 dB
- Over 200 colour options, including dual-colour choices at no extra cost
- Long lifespan, with minimal maintenance required
Options & Variations
Your new Rationel windows are available in two primary ranges: Aura/Aura Plus for a modern look and Forma/Forma Plus for a more traditional appearance. Each range offers you both timber and aluminium-clad timber options.
The Aura and Aura Plus range is perfect for contemporary properties, featuring clean lines, slim frames, and maximum glass area for enhanced daylight. These windows are ideal for energy-efficient homes, including Passive House projects.
If you need a more traditional aesthetic, the Forma and Forma Plus range offers softer profiles and optional glazing bars. These designs blend seamlessly into any home, old or new with a distinctive architectural style but the best in modern performance.
Glazing options include frosted or patterned glass for privacy, acoustic glass for noise reduction, and solar control glass to reduce heat gain. Security glazing is also available, featuring laminated panes to enhance protection against break-ins.
All Rationel windows can be fully customised with a choice of opening styles, including top-guided, side-hung, fully reversible, tilt-and-turn, and fixed-frame options.
Product Specifications
Rationel windows are some of the most thermally efficient and deliver outstanding energy efficiency. Triple-glazed models achieving U-values as low as 0.78 W/m²K and double-glazed versions offer equally impressive U-values from 1.27 W/m²K.
Acoustic insulation of up to 42 dB ensures a quieter living environment, making these windows ideal for urban properties or homes near busy roads.
Security is a priority, with all Rationel windows featuring multi-point locking mechanisms, reinforced hardware, and the option for Secured by Design-certified glazing for maximum protection.
Luxurious Rationel Windows by HBD. Visit Our Showroom
Rationel Windows deliver on luxury, quality, warmth and longevity. The HBD Windows Collection is arguably the largest and best in Hertfordshire. See the full range of Rationel windows in person. Visit our showroom to explore different styles, configurations, and customisation options, and speak with our experts about finding the perfect windows for your home.
