Our office will be closed from Friday 19th Dec to Monday 5th Jan. Merry Christmas!
Our office will be closed from Friday 19th Dec to Monday 5th Jan. Merry Christmas!
With more than 60 years of innovation and expertise, Rationel has earned a reputation as one of Europe’s leading manufacturers of high-performance windows. Founded in Denmark in 1954 and now part of the DOVISTA Group, Rationel produces over 350,000 windows and doors annually, bringing Scandinavian craftsmanship and engineering excellence to homes across the world.
Rationel windows are designed to combine elegant aesthetics with outstanding performance. Available in both contemporary and traditional styles, they are manufactured using sustainably sourced timber and premium materials to deliver exceptional durability, energy efficiency, and long-term reliability. Homeowners can choose from fully timber frames for a classic appearance or aluminium-clad timber systems that offer enhanced weather protection with minimal maintenance requirements.
Whether you’re replacing existing windows, renovating a period property, building an extension, or designing a new home, Rationel windows can be tailored to your exact specifications. With a wide range of styles, finishes, glazing options, and configurations available, they provide the perfect balance of comfort, performance, and architectural appeal.
Rationel windows are engineered for exceptional longevity. Manufactured using high-quality timber and premium components, they are designed to provide decades of reliable performance. Solid timber frames can have a life expectancy of up to 60 years, while aluminium-clad options offer enhanced protection against the elements and require very little ongoing maintenance.
Create a quieter, warmer, and more comfortable home with Rationel windows. Available with high-performance double or triple glazing, they provide excellent thermal insulation and effective sound reduction, helping to maintain a pleasant indoor environment throughout every season.
Rationel windows are designed to maximise natural daylight while minimising heat loss. Slim timber frames allow larger glazed areas, helping brighten your living spaces naturally. Manufactured using FSC®-certified timber and independently tested for indoor air quality, Rationel windows proudly carry Denmark's renowned Indoor Climate Label, demonstrating their commitment to healthy, energy-efficient living.
Security is incorporated into every Rationel window system. Many configurations meet Secured by Design standards and can include laminated safety glass, reinforced hardware, secure locking mechanisms, and robust frame construction to help protect your property and provide complete peace of mind.
Every Rationel window is manufactured specifically for your project. With an extensive choice of colours, glazing options, hardware finishes, and opening configurations available, you can create a bespoke solution that perfectly complements your home's architecture and your personal preferences.
Whether you're renovating a period property, extending a family home, or building a contemporary new-build, Rationel offers a window solution to suit. With the distinctive AURA and FORMA ranges available, homeowners can achieve a cohesive look that balances timeless style with modern performance.
Premium Scandinavian windows, made to match your home.
Whether you live in a period property or a sleek modern build, Rationel windows combine elegant design with long-lasting quality and energy performance. Choose from four main product types, available in either all-timber or aluminium-clad versions.
Rationel also manufactures coordinated entrance, patio and balcony doors in matching timber and aluminium-clad finishes. Explore our Rationel Doors page to create a consistent window and door specification across your project.
Rationel AURA windows feature clean lines and a simple Scandinavian design that suits contemporary homes, extensions and modern renovation projects. Manufactured from solid timber, the range provides natural warmth, slim frames and strong thermal performance.
The aluminium-clad version of AURA offers the same streamlined design with added durability and minimal upkeep.
With bevelled edges and heritage detailing, FORMA is the go-to choice for period properties or homes with a more traditional feel.
FORMAPLUS retains the classic styling of FORMA but adds aluminium cladding for extended longevity and minimal maintenance.
Fill in our quick 60-second form and we’ll be in touch to confirm the details and provide your quote.
As product designers and suppliers to the trade for the last 25 years, our products will sell for more than £100 million this year. This unrivalled product knowledge allows us to offer tailored solutions to fit your style and budget.
Windows and doors are one of the most aesthetically defining features of your home and it’s an important choice. At Kompass, we understand this, and we will guide you through the process with honest and knowledgeable advice. We’ll work with you to get it right so that you can relax and enjoy the buying experience.
We pledge that every product option we discuss with you will be technically excellent, have tangible benefits built in, and stand the test of time. Our product portfolio consists of products we have personally designed and products we admire for their great design and quality.
Premium products are designed and manufactured to tighter tolerances that ever before. Our precision installation process ensures that you achieve your desired aesthetic and get the best thermal and operational performance for your new glazing system.
If you would like to make an appointment or have any questions for us please call 01773 843322 or click the button below.
We have a wealth of experience that we want to share with you so that you can make informed product choices.
Opening Hours: Monday – Friday, 9am – 5pm
Address: Unit 2 Langley Park, North Street, Langley Mill, Nottinghamshire NG16 4BS, England
