The perfect complement to our wider range of aluminium windows and doors, our stunning fixed aluminium windows offer exemplary thermal performance, long-lasting durability and an ultra-modern design.
Perfectly matching the appearance and profile of our bifold doors and casement windows, these energy-efficient items will transform the look of any home. Whether you’re looking to modernise your property or maintain its historic appearance while incorporating modern technology, aluminium windows are exactly what you’re looking for.
The experienced and friendly team at Klosen can supply, deliver and install your windows efficiently and flawlessly. Whether you’re shopping for your home or business premises, we’ll work around your schedule to complete the job with minimal disruption.
And best of all, every installation we complete comes with a 10-year guarantee, giving you complete peace of mind for many years to come.
There are a number of reasons why homeowners are increasingly choosing aluminium windows over standard PVC frames. Aesthetics are high on that list; aluminium fixed windows are beautiful to look at thanks to their sleek, modern designs – designs that somehow manage to be both timeless and cutting-edge.
They have a number of practical benefits, too. Because aluminium doesn’t rust, crack or go brittle over time, aluminium frames can far outlast PVC ones. They’re stronger too, which allows the frames to be thinner without compromising on security. That means more light into your home and a greater feeling of space than you’ve ever had before.
Plus, modern aluminium frames are now more efficient than ever. Advancements like polyurethane foam thermal barriers keep the heat in and the cold out, helping you live comfortably all year round. And with a near-limitless range of colours and finishes to choose from – including powder-coated RAL shades – it’s easy to find a look that complements your property.
As one of the UK’s leading aluminium door and window specialists, it’s safe to say that we know the industry inside out. We’ve used that experience to carefully hand-pick brands and products that we know you’ll love.
Discover more about each brand below or download a brochure for further information.
We offer a 10 year guarantee on all aluminium profiles and 25 years for the powder coating element
Stay warm in the winter and cool in the summer whilst cutting down on energy bills
Our team are flexible throughout the entire process, including the design and installation of windows
Klosen have over 25 years experience working with designers, architects and homeowners
Spain’s leading manufacturer of aluminium doors and windows, Cortizo, has been in the industry for decades. Specialising exclusively in the manufacture of aluminium products, Cortizo knows how to get the best out of the material – which is why its frames are so thin and stunning to look at.
Doncaster-based Senior Architectural Systems is a company known for its restless commitment to innovation. With over three decades in the industry, the British manufacturer has been responsible for a number of technological breakthroughs over the years.
These include the polyurethane foam thermal barrier and powder coated finishes with no-quibble guarantees.
Based in Market Deeping, Lincolnshire, we cover towns and cities within a 60-mile radius, including the entirety of Cambridgeshire and Lincolnshire. Areas we regularly visit include Peterborough, Bourne, Stamford, Huntingdon and London.
Still not convinced? Here are a few installations we’ve recently completed.
No, the installation process is pretty much the same – the only real difference in cost comes from the frames themselves.
Besides standard finishes like white, grey and black, our suppliers allow you to choose from hundreds of RAL colours. These can be applied using powder coating, resulting in a durable finish that won’t chip or flake off.
Approximately five to six weeks from enquiry to installation, although this may change depending on which windows and finishes you choose.