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Internorm creates some of Brighton’s best composite windows for home and commercial projects. Using the highest quality composite window technology, you can create designs apart from the competition. Choose either timber-aluminium or uPVC-aluminium windows, which have aluminium cladding features. Cladding makes windows weatherproof, and a special foam sits in the frames to improve thermal performance.
Ensuring their designs are perfect for tomorrow’s homes, these windows achieve superb thermal efficiency with unmatched U-values across the entire window range. With stunning sound insulation in Brighton and reducing noise levels to meet Passivhaus standards, Passivlux offers incredible aluclad windows from Rationel, leaving you spoilt for choice!
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We offer composite windows in Brighton, which include aluclad windows – combining classic wood designs with modern aluminium cladding. Aluminium is an incredibly durable material which is fully weatherproof, giving you the confidence that your home will be protected all year round. Being sheltered from the wind and rain, your windows will maintain their shape without any upkeep. What more could you want from your new windows?
As we work with leading companies such as Internorm, all our valued customers will get the highest construction standard in your composite windows. Internorm only uses reliable hardwood in their designs with an innovative, mechanised manufacturing process. Due to this, composite windows have an even grain pattern which provides them with a seamless blend with any home or building in Brighton. Discover your perfect window with Passivlux today!
Uw up to 0,62
33 - 46
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,70
35 - 45
up to RC1N, RC2
Uw up to 0,64
33 - 45
up to RC1N, RC2
Uw up to 0,64
33 - 45
up to RC1N, RC2
Uw up to 0,64
33 - 45
up to RC1N, RC2
Uw up to 0,64
33 - 45
up to RC1N, RC2
Uw up to 0,62
41 - 46
up to RC1N, RC2
Uw up to 0,62
41 - 46
up to RC1N, RC2
The KF 410 is a contemporary, versatile uPVC design. With a square edged design, this system is visually appealing for all customers and is fantastic for a multitude of commercial projects.
Due to the innovative I-tec technology, the frame is insulated continuously, boosting a property’s thermal insulation. The innovative ventilation system incorporated ensures sufficient fresh air and perfect room climate 24 hours a day.
Uw up to 0.62
34 - 45
Up to RC1N, RC2
The KF 520 window profile combines innovative designs with technical innovations. The window sash is not visible from outside due to its glass appearance.
This sash also contains the revolutionary locking, I-tec Secure, which renders levering of the window near impossible. Integrated flaps press on all sides into the frame interior when locking and thus ensures maximum burglary protection.
Uw up to 0,63
33 - 46
up to RC3, RC2
The KF 310 delivers a sleek and versatile aesthetic whilst delivering amazing thermal and security features. A leading uPVC system, they come with a multi chambered frame and discrete hardware.
The multi chamber frame profile ensures even better thermal insulation. Three continuous gaskets protect the inside area from wet weather conditions. It also improves thermal insulation and sound reduction at the same time.
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 appears like fixed glazing, yet is fully openable. The narrow, square edged uPVC window frame highlights the minimal architecture of the design.
Three sided rendering of the frame achieves elegant frameless glass architecture. With a slim 71mm frame depth and advanced features, the KF 320 delivers a great, well rounded performance for a flush fitting uPVC window.
Uw up to 0,65
35 - 45
up to RC1N, RC2
Enjoy high levels of thermal insulation and sound reduction values with the KF 310. This window profile delivers sleek, versatile aesthetics while performing to a leading industry standard.
KF 310 is available in a wide choice of colours, handles and glazing, as well as a balcony and patio door and now also as Juliette balcony. The KF 310 is a leading system among our uPVC and uPVC-aluminium windows.
Uw up to 0,69
33 - 45
up to RC1N, RC2
The KF 320 uPVC-aluminium system is a unique, stunning window delivering versatile commercial application. All styles of housing and building can benefit from the sleek, frameless glass design.
With a slim, 74mm construction depth and full customisation, they deliver the same high standards of thermal retention and security. The KF 320 gives the impression of fixed glazing, yet it is still an openable window.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The KF 410 window profile provides sleek aesthetics with its 93mm construction depth and square edged design of frame. This design is compatible with any high end project, residential or commercial
The frame is insulated throughout, due to the new I-tec Insulation technology, offering considerably improved thermal insulation. End users can enjoy a range of optional upgrades, including Internorm’s own innovations.
Uw up to 0,62
34 - 45
up to RC1N, RC2
The KF 520 combines innovative design with technical advancements. The window sash is not visible externally due to the glass and cannot be distinguished from fixed glazing by the untrained eye.
This sash also has the state of the art locking, known as I-tec Secure. This renders levering of the window impossible for intruders. Integrated flaps press on all sides into the frame interior when locking and thus ensures security against burglars.
Uw up to 0,63
33 - 46
up to RC3, RC2
The modern and narrow window KV 350 features integrated blinds. High quality audio reduction and thermal insulation, sun and privacy protection are also integrated directly in the window.
Easy to maintain – the blind is protected by the glass panes from wind, harsh weather and dirt. Sun protection is now also available in refurbishments or on facades, even if they do not permit roller shutters.
Uw up to 0.79
38 – 44 average
Secured by Design & PAS 24
Sun and privacy protection are fitted between the panes in this flush window. This design offers protection in only one window with state of the art thermal insulation and sound reduction values.
The integration of our market leading integral blinds enhances the thermal performance of the windows and aids the reduction of decibel ingress. With quadruple protection from solar glare, the KV 440 comes in Venetian or Duette variants, catering to different applications and projects.
Uw up to 0,64
39 - 45
up to RC1N, RC2
The HF 310 blends versatility with an all round double glazing performance. This window takes in the visual benefits of timber with the efficiency and weatherproof properties of modern aluminium.
All around glueing of the glass pane ensures excellent stability and burglary protection. Three continuous gaskets and external weather resistant aluminium protect the inside from the wet. The timber element offers excellent thermal insulation values.
Uw up to 0,62
33 - 46
up to RC1N, RC2
The HF 410 is one of the most popular and widely requested systems in our timber-aluminium range. Its versatility, customisation and overall performance levels make it perfect for almost any project.
With an 85mm frame depth, both residential and commercial end users can enjoy the minimalistic aesthetics. All the while, this design enjoys fantastic thermal retention, high quality acoustic insulation and certified security standards.
Uw up to 0,64
33 - 45
up to RC1N, RC2
The HV 450 comes with Internorm’s integral sun protection hardware as standard. All the while, retaining all the character, delivering eye catching aesthetics and offering versatile application.
The HV 450 offers quadruple protection with perfect sun and privacy protection, thermal insulation and sound reduction. The I-tec Shading works completely energy self sufficient and offers a host of innovative solutions for South East England homes.
Uw up to 0.62
41 - 46
Secured by Design & PAS 24
The HF 400 window is a timber-aluminium system that provides an all round performance and stunning aesthetics. Fitted with two I-tec innovations and customisable to tastes, it suits all projects.
Slim in design with just a 75mm construction depth, the HF 400 window profile can serve a multitude of purposes with an array of commercial and residential application. This window is a core part of our timber-aluminium product range.
Uw up to 0.70
35 - 45
Secured by Design & PAS 24
Another option to consider is a modern combination of uPVC-aluminium. Windows with this combination work well with both domestic and commercial applications – ideal for contemporary living spaces. Both these materials work perfectly in slim-line shapes, which means that you can get a sleek window which brings more sunlight into the home.
We ensure that our full range of windows brings the very best superb performance to your Brighton home. Our Internorm composite windows meet and exceed U-values of 0.8W/m2k. With stunning results, we are confident that your property will receive a thermally efficient solution that can save you money on your energy bills in the future.
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,65
35 - 45
up to RC1N, RC2
Uw up to 0,62
34 - 45
up to RC1N, RC2
Uw up to 0,62
34 - 45
up to RC1N, RC2
Uw up to 0,62
34 - 45
up to RC1N, RC2
Uw up to 0,62
34 - 45
up to RC1N, RC2
Uw up to 0,63
33 - 46
up to RC1N, RC2
Uw up to 0,79
38 - 44
up to RC1N, RC2
Uw up to 0,79
38 - 44
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
Uw up to 0,69
33 - 45
up to RC1N, RC2
The KF 410 is a contemporary, versatile uPVC design. With a square edged design, this system is visually appealing for all customers and is fantastic for a multitude of commercial projects.
Due to the innovative I-tec technology, the frame is insulated continuously, boosting a property’s thermal insulation. The innovative ventilation system incorporated ensures sufficient fresh air and perfect room climate 24 hours a day.
Uw up to 0.62
34 - 45
Up to RC1N, RC2
The KF 520 window profile combines innovative designs with technical innovations. The window sash is not visible from outside due to its glass appearance.
This sash also contains the revolutionary locking, I-tec Secure, which renders levering of the window near impossible. Integrated flaps press on all sides into the frame interior when locking and thus ensures maximum burglary protection.
Uw up to 0,63
33 - 46
up to RC3, RC2
The KF 310 delivers a sleek and versatile aesthetic whilst delivering amazing thermal and security features. A leading uPVC system, they come with a multi chambered frame and discrete hardware.
The multi chamber frame profile ensures even better thermal insulation. Three continuous gaskets protect the inside area from wet weather conditions. It also improves thermal insulation and sound reduction at the same time.
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 appears like fixed glazing, yet is fully openable. The narrow, square edged uPVC window frame highlights the minimal architecture of the design.
Three sided rendering of the frame achieves elegant frameless glass architecture. With a slim 71mm frame depth and advanced features, the KF 320 delivers a great, well rounded performance for a flush fitting uPVC window.
Uw up to 0,65
35 - 45
up to RC1N, RC2
Enjoy high levels of thermal insulation and sound reduction values with the KF 310. This window profile delivers sleek, versatile aesthetics while performing to a leading industry standard.
KF 310 is available in a wide choice of colours, handles and glazing, as well as a balcony and patio door and now also as Juliette balcony. The KF 310 is a leading system among our uPVC and uPVC-aluminium windows.
Uw up to 0,69
33 - 45
up to RC1N, RC2
The KF 320 uPVC-aluminium system is a unique, stunning window delivering versatile commercial application. All styles of housing and building can benefit from the sleek, frameless glass design.
With a slim, 74mm construction depth and full customisation, they deliver the same high standards of thermal retention and security. The KF 320 gives the impression of fixed glazing, yet it is still an openable window.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The KF 410 window profile provides sleek aesthetics with its 93mm construction depth and square edged design of frame. This design is compatible with any high end project, residential or commercial
The frame is insulated throughout, due to the new I-tec Insulation technology, offering considerably improved thermal insulation. End users can enjoy a range of optional upgrades, including Internorm’s own innovations.
Uw up to 0,62
34 - 45
up to RC1N, RC2
The KF 520 combines innovative design with technical advancements. The window sash is not visible externally due to the glass and cannot be distinguished from fixed glazing by the untrained eye.
This sash also has the state of the art locking, known as I-tec Secure. This renders levering of the window impossible for intruders. Integrated flaps press on all sides into the frame interior when locking and thus ensures security against burglars.
Uw up to 0,63
33 - 46
up to RC3, RC2
The modern and narrow window KV 350 features integrated blinds. High quality audio reduction and thermal insulation, sun and privacy protection are also integrated directly in the window.
Easy to maintain – the blind is protected by the glass panes from wind, harsh weather and dirt. Sun protection is now also available in refurbishments or on facades, even if they do not permit roller shutters.
Uw up to 0.79
38 – 44 average
Secured by Design & PAS 24
Sun and privacy protection are fitted between the panes in this flush window. This design offers protection in only one window with state of the art thermal insulation and sound reduction values.
The integration of our market leading integral blinds enhances the thermal performance of the windows and aids the reduction of decibel ingress. With quadruple protection from solar glare, the KV 440 comes in Venetian or Duette variants, catering to different applications and projects.
Uw up to 0,64
39 - 45
up to RC1N, RC2
The HF 310 blends versatility with an all round double glazing performance. This window takes in the visual benefits of timber with the efficiency and weatherproof properties of modern aluminium.
All around glueing of the glass pane ensures excellent stability and burglary protection. Three continuous gaskets and external weather resistant aluminium protect the inside from the wet. The timber element offers excellent thermal insulation values.
Uw up to 0,62
33 - 46
up to RC1N, RC2
The HF 410 is one of the most popular and widely requested systems in our timber-aluminium range. Its versatility, customisation and overall performance levels make it perfect for almost any project.
With an 85mm frame depth, both residential and commercial end users can enjoy the minimalistic aesthetics. All the while, this design enjoys fantastic thermal retention, high quality acoustic insulation and certified security standards.
Uw up to 0,64
33 - 45
up to RC1N, RC2
The HV 450 comes with Internorm’s integral sun protection hardware as standard. All the while, retaining all the character, delivering eye catching aesthetics and offering versatile application.
The HV 450 offers quadruple protection with perfect sun and privacy protection, thermal insulation and sound reduction. The I-tec Shading works completely energy self sufficient and offers a host of innovative solutions for South East England homes.
Uw up to 0.62
41 - 46
Secured by Design & PAS 24
The HF 400 window is a timber-aluminium system that provides an all round performance and stunning aesthetics. Fitted with two I-tec innovations and customisable to tastes, it suits all projects.
Slim in design with just a 75mm construction depth, the HF 400 window profile can serve a multitude of purposes with an array of commercial and residential application. This window is a core part of our timber-aluminium product range.
Uw up to 0.70
35 - 45
Secured by Design & PAS 24
With various design options, our timber window range includes spruce and larch, whilst our aluclad windows come with oak, ash and walnut finishes. Our uPVC-aluminium windows come in a wide selection of colours to ensure that you get the very best home improvement solution on the market.
Don’t just take our word for it. Explore our case studies and see first-hand how our windows have benefitted other households. Get inspiration for your next project by finding all the answers to your questions. Both Internorm and Rationel have products that can stand the test of time – discover our case studies today!
Our Kent showroom displays a full range of composite windows for your next project. Our friendly team are on hand to help to show you all the available options for your home. We are the Rationel award winner for best distributor and showroom, so why not visit us and see what your property can achieve.
Our online quoting engine can give you a rough estimate of your bespoke window price. Internorm and Rationel composite windows are available all across the Brighton, Kent, Sussex, London and South East areas – so what are you waiting for?
Contact us directly by booking an appointment or calling us on 01227 379 984. We look forward to hearing from you soon!
Discover high-quality commercial and residential composite windows for your home in Herne Bay, Kent, Sussex, London or the South East of England. It's completely free to use, and only takes a matter of minutes.
