We are market leaders when it comes to supplying Internorm windows to Londonderry homeowners and the surrounding areas. It’s not just homeowners, the Internorm windows we supply are of such a high quality, and architects and developers are fans. To learn more about our Internorm windows, either use our online form or quoting engine to receive your no obligation, free quotation today.
We are market leaders when it comes to supplying Internorm windows to Londonderry homeowners and the surrounding areas. It’s not just homeowners, the Internorm windows we supply are of such a high quality, and architects and developers are fans. To learn more about our Internorm windows, either use our online form or quoting engine to receive your no obligation, free quotation today.
When you come to Feneco for your Internorm windows, you can be sure that you will get an Internorm window that is totally customisable. This means that you can choose from our triple glazing – the standard option – or our double glazing offering. However, whichever glazing option you choose for your Internorm windows, you can be sure that you will be installing top-quality products our Internorm windows are designed to exceed Passive House Standards.
Our Internorm windows come in a wide range of styles, so you can be sure that you will find a design that complements the style of your Londonderry home. Our Internorm windows are available in Home Soft, Home Pure, Studio and other ambient styles. You don’t have to limit your choice of Internorm windows to just one design, many of our customers choose a variety of styles, so creating a blend of different atmospheres in their home.
Whichever style of Internorm window you select, you can be assured that it will give your home enhanced performance levels and practical benefits. These include enhanced security, thermal efficiency and weatherproofing. Once you have installed our Internorm windows in your property you will notice the benefits and effects immediately.
Get A quote
With our Internorm windows, you get the best of both worlds, they are the perfect combination of form and function. So it is no wonder that homeowners and developers in Londonderry are so keen to install them in their properties. When it comes to our Internorm uPVC window design you get a great blend of passive house standards with a model aesthetic, thanks to their uPVC profiles. These Internorm windows give your home added kerbside appeal and a host of practical benefits all at the same time.
Our triple glazed uPVC Internorm windows can also be equipped with cutting-edge hardware and accessories to give you a complete home improvement solution for today’s exacting standards. Additional items that can be fitted with your uPVC Internorm windows include Internorm’s I-tec solution, which gives your home improved security and thermal efficiency. Thanks to the high manufacturing methods used for our uPVC Internorm windows, once installed in your Londonderry home they will last for many years to come.
Request a Quote
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 0,63
33 - 46
up to RC3, RC2
The KF 410 has a complete flush transition from sash to frame, completing this window as one unit. Once the frame is rendered into the brickwork on three sides, only the unique narrow and square edged sash frame remains visible.
With low U-values, it’s a cost efficient window option with compliant accreditations. Secured By Design and Lifetime Homes accreditations make them an ideal option for any home. Intelligent Internorm technology is integrated into this KF 410 style window system.
I-tec innovations such as I-tec Glazing and I-tec Ventilation ensure optimum stability, thermal insulation and security. These windows are controlled at the touch of a button, enabling simple and stress free operation of your window via smartphone or tablet.
Uw up to 0.62
34 - 45
Up to RC1N, RC2
KF 520 uPVC windows combine innovative design with advanced technology. This window meets the highest standards of burglary protection, with I-tec Secure and innovative locking systems.
Integrated flaps press on all sides into the frame interior when locking and thus ensure maximum burglary protection.
The sleek frame offers excellent thermal efficiency and sound reduction for maximum comfort. Optional built in ventilation can be added into the window frame with the I-tec Ventilation system. I-tec Glazing gives stability, thermal insulation, and security due to the all round bonding of the glass pane.
Uw up to 0,63
33 - 46
up to RC3, RC2
The traditional and sophisticated KF 310 has a sleek appearance alongside reliable technology. This range of windows is characterised by thermal insulation and impressive sound reduction values.
With a round bonded glass pane, the KF 310 is available in a large selection of colours, glazing and handles. They can also make the ideal addition to the balcony and patio doors, with integrated Juliet balcony.
I-tec glazing ensures excellent stability. The glass pane is glued all around the frame, ensuring superior levels of security and thermal insulation.
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 gives the impression of fixed glazing, yet it is still an openable window. The narrow, square edged window frame highlights the minimal architecture of the window design.
This straight lined window profile has an appealingly consistent design. Externally, the opening sash is covered by the window frame. The narrow offset between the frame and the glass pane enhances the flush mount aesthetics The glass sash gives the impression of a fixed glazed unit, yet it is an operable window.
Three sided rendering of the frame achieves modern and almost frameless glass architecture. I-tec glazing ensures excellent stability, thermal insulation and security through surrounding bonding of the glass pane.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The FK 310 is a slim window with a construction depth of 74 mm. The rounded edges of sash and frame match design is elegant and cosy.
The strong aluminium cladding on the outside can be designed in many colours. The 6 chamber frame profile ensures superior levels of thermal insulation. Three continuous gaskets protect you home from the wet whilst improving thermal insulation and sound reduction.
I-tec Glazing, the continuous all round bonding of the glass pane, makes this style of window even more stable and boosts burglary protection
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 gives the impression of fixed glazing, yet it is still an openable window. The narrow, square edged window frame highlights the minimal architecture of the window design.
This straight lined window profile has an appealingly consistent design. Externally, the opening sash is covered by the window frame. The narrow offset between the frame and the glass pane enhances the flush mount aesthetics The glass sash gives the impression of a fixed glazed unit, yet it is an operable window.
Three sided rendering of the frame achieves modern and almost frameless glass architecture. I-tec glazing ensures excellent stability, thermal insulation and security through surrounding bonding of the glass pane.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The KF 410 window offers sleek aesthetics with its 93mm construction depth and square edged frame design. This Passivhaus certified window demonstrates thermal insulation, with U-values as low as 0.62 W/m2k.
The KF 410 uPVC aluminium windows are entirely flush from sash to frame. Once the frame is rendered into the brickwork on three sides, only the unique narrow and square edged sash frame remains visible.
The KF 410 window is compliant with the top level accreditations of Secured by Design and Lifetime Homes, key “must have” attributes architects require. Internorm technology is integrated into this energy efficient window offering technological advances that make life easier.
Uw up to 0,62
34 - 45
up to RC1N, RC2
KF 520 meets the highest demands for burglary protection, thanks to its state of the art locking technology. The sleek frame offers superior levels thermal efficiency and sound reduction for maximum homeowner comfort. This model is also available in the flush mount Studio design, for an ultra modern aesthetic.
The KF 520 uPVC aluminium windows feature a fully integrated locking system, which renders levering of the window impossible. The window sash is not visible externally due to its glass appearance and can optically not be distinguished from fixed glazing.
Optional built in ventilation can be added into the frame with the I-tec Ventilation system. I-tec Glazing ensures excellent stability, thermal insulation, and security due to the all round bonding of the glass pane.
Uw up to 0,63
33 - 46
up to RC3, RC2
The KV 350 range of uPVC aluminium windows comes with advanced sun protection technology. Designed with market leading integral blinds, these window systems offer sun and privacy protection. This technology is integrated directly between the glass panes, keeping it protected from wind, dirt and bad weather.
This composite window range conveniently integrates blinds in between the glass panes, for maintenance free protect. Choose between the Home Pure square edged profile and the Ambiente rounded edged traditional design.
All Internorm integrated blinds can be powered by a self sufficient photovoltaic panel. This means that no external power source is needed thanks to I-tec Shading. The blinds can be operated with a control panel, remote control, and the I-tec SmartWindow mobile application. I-tec Glazing ensures excellent stability due to the all round bonding of the glass pane.
Uw up to 0.79
38 – 44 average
Secured by Design & PAS 24
The KV 440 window features integrated blind and advanced Internorm technology. The technology of I-tec Glazing ensures optimum stability as well as superior levels of thermal insulation and sound reduction.
This window features quadruple protection with the sun and privacy protection integrated into the window. The blinds are fitted between panes, protecting them from dirt. They can still be easily accessed to clean, as they feature Internorm Sun and Insect Protection technologies
The energy sufficient I-tec shading doesn’t need an external power source due to the photovoltaic module and batteries. Integrated automatic functions such as day/night recognition and intelligent overheating protection can be integrated.
Uw up to 0,64
39 - 45
up to RC1N, RC2
The HF 310 blends flexibility with a superior double glazing performance. This window takes in the visual benefits of timber with the efficiency and weatherproof properties of modern aluminium. The three continuous gaskets prevent water from meeting the timber surface.
All around gluing of the glass pane ensures excellent stability and offers burglary protection. Three continuous gaskets and external weather resistant aluminium prevent water from entering. The timber elements of the window offer 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 window systems in our timber-aluminium range. Its versatility, customisation and overall performance levels make it ideal for any size, shape and era of property.
With an 85mm frame depth, you 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 innovative integral sun protection hardware as standard. All the while, retaining all the character, delivering eye catching aesthetics and versatility for homeowners.
The HV 450 offers quadruple protection with advanced 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 homes.
Uw up to 0.62
41 - 46
Secured by Design & PAS 24
The HF 400 is a timber aluminium window system that provides an all round performance without compromising on aesthetics.
This design of composite window has an attractive finish, superior levels of heat protection and multiple security properties. The HF 400 has a door leaf that is flat on both the inside and the outside, and an angular frame profile. The plate construction of the door leaf ensures thermal insulation to passive house standard.
Multipoint locking mechanism with a swing bolt is fitted as standard and maximum stability in the door leaf offers enhanced burglary protection. A wide range of door models with different surfaces, handles and glass cut outs offers the right door for every type of home.
Uw up to 0.70
35 - 45
Secured by Design & PAS 24
These particular Internorm windows offer your Londonderry home exceptional thermal efficiency. Their outstanding performance levels come from the composite nature of their uPVC-aluminium frames, which doesn’t just improve the aesthetics of your home, it gives it numerous practical benefits as well. Our triple glazed uPVC-aluminium Internorm windows will ensure that your home stays warmer for longer without having to turn up the central heating.
Our uPVC-aluminium Internorm windows are incredibly easy to look after, surprisingly so for such a cutting-edge home improvement product. Their simple maintenance is down to the aluminium cladding profile on the window exterior, which makes these Internorm windows incredibly durable and robust. Thanks to their long-lasting nature these uPVC-aluminium Internorm windows are the perfect choice for a home that is aiming to reach Passive House Standards.
Unlike traditional timber framed windows, our uPVC-aluminium Internorm windows do not need any repainting, revarnishing or restaining to ensure that they keep performing to their enviable levels.
Free Online Quote
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 has a complete flush transition from sash to frame, completing this window as one unit. Once the frame is rendered into the brickwork on three sides, only the unique narrow and square edged sash frame remains visible.
With low U-values, it’s a cost efficient window option with compliant accreditations. Secured By Design and Lifetime Homes accreditations make them an ideal option for any home. Intelligent Internorm technology is integrated into this KF 410 style window system.
I-tec innovations such as I-tec Glazing and I-tec Ventilation ensure optimum stability, thermal insulation and security. These windows are controlled at the touch of a button, enabling simple and stress free operation of your window via smartphone or tablet.
Uw up to 0.62
34 - 45
Up to RC1N, RC2
KF 520 uPVC windows combine innovative design with advanced technology. This window meets the highest standards of burglary protection, with I-tec Secure and innovative locking systems.
Integrated flaps press on all sides into the frame interior when locking and thus ensure maximum burglary protection.
The sleek frame offers excellent thermal efficiency and sound reduction for maximum comfort. Optional built in ventilation can be added into the window frame with the I-tec Ventilation system. I-tec Glazing gives stability, thermal insulation, and security due to the all round bonding of the glass pane.
Uw up to 0,63
33 - 46
up to RC3, RC2
The traditional and sophisticated KF 310 has a sleek appearance alongside reliable technology. This range of windows is characterised by thermal insulation and impressive sound reduction values.
With a round bonded glass pane, the KF 310 is available in a large selection of colours, glazing and handles. They can also make the ideal addition to the balcony and patio doors, with integrated Juliet balcony.
I-tec glazing ensures excellent stability. The glass pane is glued all around the frame, ensuring superior levels of security and thermal insulation.
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 gives the impression of fixed glazing, yet it is still an openable window. The narrow, square edged window frame highlights the minimal architecture of the window design.
This straight lined window profile has an appealingly consistent design. Externally, the opening sash is covered by the window frame. The narrow offset between the frame and the glass pane enhances the flush mount aesthetics The glass sash gives the impression of a fixed glazed unit, yet it is an operable window.
Three sided rendering of the frame achieves modern and almost frameless glass architecture. I-tec glazing ensures excellent stability, thermal insulation and security through surrounding bonding of the glass pane.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The FK 310 is a slim window with a construction depth of 74 mm. The rounded edges of sash and frame match design is elegant and cosy.
The strong aluminium cladding on the outside can be designed in many colours. The 6 chamber frame profile ensures superior levels of thermal insulation. Three continuous gaskets protect you home from the wet whilst improving thermal insulation and sound reduction.
I-tec Glazing, the continuous all round bonding of the glass pane, makes this style of window even more stable and boosts burglary protection
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 gives the impression of fixed glazing, yet it is still an openable window. The narrow, square edged window frame highlights the minimal architecture of the window design.
This straight lined window profile has an appealingly consistent design. Externally, the opening sash is covered by the window frame. The narrow offset between the frame and the glass pane enhances the flush mount aesthetics The glass sash gives the impression of a fixed glazed unit, yet it is an operable window.
Three sided rendering of the frame achieves modern and almost frameless glass architecture. I-tec glazing ensures excellent stability, thermal insulation and security through surrounding bonding of the glass pane.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The KF 410 window offers sleek aesthetics with its 93mm construction depth and square edged frame design. This Passivhaus certified window demonstrates thermal insulation, with U-values as low as 0.62 W/m2k.
The KF 410 uPVC aluminium windows are entirely flush from sash to frame. Once the frame is rendered into the brickwork on three sides, only the unique narrow and square edged sash frame remains visible.
The KF 410 window is compliant with the top level accreditations of Secured by Design and Lifetime Homes, key “must have” attributes architects require. Internorm technology is integrated into this energy efficient window offering technological advances that make life easier.
Uw up to 0,62
34 - 45
up to RC1N, RC2
KF 520 meets the highest demands for burglary protection, thanks to its state of the art locking technology. The sleek frame offers superior levels thermal efficiency and sound reduction for maximum homeowner comfort. This model is also available in the flush mount Studio design, for an ultra modern aesthetic.
The KF 520 uPVC aluminium windows feature a fully integrated locking system, which renders levering of the window impossible. The window sash is not visible externally due to its glass appearance and can optically not be distinguished from fixed glazing.
Optional built in ventilation can be added into the frame with the I-tec Ventilation system. I-tec Glazing ensures excellent stability, thermal insulation, and security due to the all round bonding of the glass pane.
Uw up to 0,63
33 - 46
up to RC3, RC2
The KV 350 range of uPVC aluminium windows comes with advanced sun protection technology. Designed with market leading integral blinds, these window systems offer sun and privacy protection. This technology is integrated directly between the glass panes, keeping it protected from wind, dirt and bad weather.
This composite window range conveniently integrates blinds in between the glass panes, for maintenance free protect. Choose between the Home Pure square edged profile and the Ambiente rounded edged traditional design.
All Internorm integrated blinds can be powered by a self sufficient photovoltaic panel. This means that no external power source is needed thanks to I-tec Shading. The blinds can be operated with a control panel, remote control, and the I-tec SmartWindow mobile application. I-tec Glazing ensures excellent stability due to the all round bonding of the glass pane.
Uw up to 0.79
38 – 44 average
Secured by Design & PAS 24
The KV 440 window features integrated blind and advanced Internorm technology. The technology of I-tec Glazing ensures optimum stability as well as superior levels of thermal insulation and sound reduction.
This window features quadruple protection with the sun and privacy protection integrated into the window. The blinds are fitted between panes, protecting them from dirt. They can still be easily accessed to clean, as they feature Internorm Sun and Insect Protection technologies
The energy sufficient I-tec shading doesn’t need an external power source due to the photovoltaic module and batteries. Integrated automatic functions such as day/night recognition and intelligent overheating protection can be integrated.
Uw up to 0,64
39 - 45
up to RC1N, RC2
The HF 310 blends flexibility with a superior double glazing performance. This window takes in the visual benefits of timber with the efficiency and weatherproof properties of modern aluminium. The three continuous gaskets prevent water from meeting the timber surface.
All around gluing of the glass pane ensures excellent stability and offers burglary protection. Three continuous gaskets and external weather resistant aluminium prevent water from entering. The timber elements of the window offer 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 window systems in our timber-aluminium range. Its versatility, customisation and overall performance levels make it ideal for any size, shape and era of property.
With an 85mm frame depth, you 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 innovative integral sun protection hardware as standard. All the while, retaining all the character, delivering eye catching aesthetics and versatility for homeowners.
The HV 450 offers quadruple protection with advanced 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 homes.
Uw up to 0.62
41 - 46
Secured by Design & PAS 24
The HF 400 is a timber aluminium window system that provides an all round performance without compromising on aesthetics.
This design of composite window has an attractive finish, superior levels of heat protection and multiple security properties. The HF 400 has a door leaf that is flat on both the inside and the outside, and an angular frame profile. The plate construction of the door leaf ensures thermal insulation to passive house standard.
Multipoint locking mechanism with a swing bolt is fitted as standard and maximum stability in the door leaf offers enhanced burglary protection. A wide range of door models with different surfaces, handles and glass cut outs offers the right door for every type of home.
Uw up to 0.70
35 - 45
Secured by Design & PAS 24
These Internorm windows as the name suggests, are a clever combination of timber and aluminium. This mix creates an Internorm window that is robust; once installed in any Londonderry property you can expect them to last a lifetime. Installing our Internorm timber-aluminium windows is a wise investment as they will continue to keep your property warm and dry for many years to come, no matter what the weather is like outside.
This particular style of Internorm window boasts an aluminium cladding, combined with triple or double glazing, protects the timber core from weathering out. A layer of foam is then placed between the different materials to ensure that these Internorm windows give you outstanding thermal efficiency throughout the year. These Internorm windows will give you performance levels and aesthetics that are unrivalled in the home improvement market today.
Our Internorm timber-aluminium windows help you attain the Passive House Standards you have always strived for, as they offer outstanding performance levels that other windows only dream of. Get in touch today to start your Internorm timber-aluminium windows journey.
Contact Us 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 has a complete flush transition from sash to frame, completing this window as one unit. Once the frame is rendered into the brickwork on three sides, only the unique narrow and square edged sash frame remains visible.
With low U-values, it’s a cost efficient window option with compliant accreditations. Secured By Design and Lifetime Homes accreditations make them an ideal option for any home. Intelligent Internorm technology is integrated into this KF 410 style window system.
I-tec innovations such as I-tec Glazing and I-tec Ventilation ensure optimum stability, thermal insulation and security. These windows are controlled at the touch of a button, enabling simple and stress free operation of your window via smartphone or tablet.
Uw up to 0.62
34 - 45
Up to RC1N, RC2
KF 520 uPVC windows combine innovative design with advanced technology. This window meets the highest standards of burglary protection, with I-tec Secure and innovative locking systems.
Integrated flaps press on all sides into the frame interior when locking and thus ensure maximum burglary protection.
The sleek frame offers excellent thermal efficiency and sound reduction for maximum comfort. Optional built in ventilation can be added into the window frame with the I-tec Ventilation system. I-tec Glazing gives stability, thermal insulation, and security due to the all round bonding of the glass pane.
Uw up to 0,63
33 - 46
up to RC3, RC2
The traditional and sophisticated KF 310 has a sleek appearance alongside reliable technology. This range of windows is characterised by thermal insulation and impressive sound reduction values.
With a round bonded glass pane, the KF 310 is available in a large selection of colours, glazing and handles. They can also make the ideal addition to the balcony and patio doors, with integrated Juliet balcony.
I-tec glazing ensures excellent stability. The glass pane is glued all around the frame, ensuring superior levels of security and thermal insulation.
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 gives the impression of fixed glazing, yet it is still an openable window. The narrow, square edged window frame highlights the minimal architecture of the window design.
This straight lined window profile has an appealingly consistent design. Externally, the opening sash is covered by the window frame. The narrow offset between the frame and the glass pane enhances the flush mount aesthetics The glass sash gives the impression of a fixed glazed unit, yet it is an operable window.
Three sided rendering of the frame achieves modern and almost frameless glass architecture. I-tec glazing ensures excellent stability, thermal insulation and security through surrounding bonding of the glass pane.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The FK 310 is a slim window with a construction depth of 74 mm. The rounded edges of sash and frame match design is elegant and cosy.
The strong aluminium cladding on the outside can be designed in many colours. The 6 chamber frame profile ensures superior levels of thermal insulation. Three continuous gaskets protect you home from the wet whilst improving thermal insulation and sound reduction.
I-tec Glazing, the continuous all round bonding of the glass pane, makes this style of window even more stable and boosts burglary protection
Uw up to 0,69
33 - 45
up to RC1N, RC2
The innovative glass sash of the KF 320 gives the impression of fixed glazing, yet it is still an openable window. The narrow, square edged window frame highlights the minimal architecture of the window design.
This straight lined window profile has an appealingly consistent design. Externally, the opening sash is covered by the window frame. The narrow offset between the frame and the glass pane enhances the flush mount aesthetics The glass sash gives the impression of a fixed glazed unit, yet it is an operable window.
Three sided rendering of the frame achieves modern and almost frameless glass architecture. I-tec glazing ensures excellent stability, thermal insulation and security through surrounding bonding of the glass pane.
Uw up to 0,65
35 - 45
up to RC1N, RC2
The KF 410 window offers sleek aesthetics with its 93mm construction depth and square edged frame design. This Passivhaus certified window demonstrates thermal insulation, with U-values as low as 0.62 W/m2k.
The KF 410 uPVC aluminium windows are entirely flush from sash to frame. Once the frame is rendered into the brickwork on three sides, only the unique narrow and square edged sash frame remains visible.
The KF 410 window is compliant with the top level accreditations of Secured by Design and Lifetime Homes, key “must have” attributes architects require. Internorm technology is integrated into this energy efficient window offering technological advances that make life easier.
Uw up to 0,62
34 - 45
up to RC1N, RC2
KF 520 meets the highest demands for burglary protection, thanks to its state of the art locking technology. The sleek frame offers superior levels thermal efficiency and sound reduction for maximum homeowner comfort. This model is also available in the flush mount Studio design, for an ultra modern aesthetic.
The KF 520 uPVC aluminium windows feature a fully integrated locking system, which renders levering of the window impossible. The window sash is not visible externally due to its glass appearance and can optically not be distinguished from fixed glazing.
Optional built in ventilation can be added into the frame with the I-tec Ventilation system. I-tec Glazing ensures excellent stability, thermal insulation, and security due to the all round bonding of the glass pane.
Uw up to 0,63
33 - 46
up to RC3, RC2
The KV 350 range of uPVC aluminium windows comes with advanced sun protection technology. Designed with market leading integral blinds, these window systems offer sun and privacy protection. This technology is integrated directly between the glass panes, keeping it protected from wind, dirt and bad weather.
This composite window range conveniently integrates blinds in between the glass panes, for maintenance free protect. Choose between the Home Pure square edged profile and the Ambiente rounded edged traditional design.
All Internorm integrated blinds can be powered by a self sufficient photovoltaic panel. This means that no external power source is needed thanks to I-tec Shading. The blinds can be operated with a control panel, remote control, and the I-tec SmartWindow mobile application. I-tec Glazing ensures excellent stability due to the all round bonding of the glass pane.
Uw up to 0.79
38 – 44 average
Secured by Design & PAS 24
The KV 440 window features integrated blind and advanced Internorm technology. The technology of I-tec Glazing ensures optimum stability as well as superior levels of thermal insulation and sound reduction.
This window features quadruple protection with the sun and privacy protection integrated into the window. The blinds are fitted between panes, protecting them from dirt. They can still be easily accessed to clean, as they feature Internorm Sun and Insect Protection technologies
The energy sufficient I-tec shading doesn’t need an external power source due to the photovoltaic module and batteries. Integrated automatic functions such as day/night recognition and intelligent overheating protection can be integrated.
Uw up to 0,64
39 - 45
up to RC1N, RC2
The HF 310 blends flexibility with a superior double glazing performance. This window takes in the visual benefits of timber with the efficiency and weatherproof properties of modern aluminium. The three continuous gaskets prevent water from meeting the timber surface.
All around gluing of the glass pane ensures excellent stability and offers burglary protection. Three continuous gaskets and external weather resistant aluminium prevent water from entering. The timber elements of the window offer 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 window systems in our timber-aluminium range. Its versatility, customisation and overall performance levels make it ideal for any size, shape and era of property.
With an 85mm frame depth, you 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 innovative integral sun protection hardware as standard. All the while, retaining all the character, delivering eye catching aesthetics and versatility for homeowners.
The HV 450 offers quadruple protection with advanced 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 homes.
Uw up to 0.62
41 - 46
Secured by Design & PAS 24
The HF 400 is a timber aluminium window system that provides an all round performance without compromising on aesthetics.
This design of composite window has an attractive finish, superior levels of heat protection and multiple security properties. The HF 400 has a door leaf that is flat on both the inside and the outside, and an angular frame profile. The plate construction of the door leaf ensures thermal insulation to passive house standard.
Multipoint locking mechanism with a swing bolt is fitted as standard and maximum stability in the door leaf offers enhanced burglary protection. A wide range of door models with different surfaces, handles and glass cut outs offers the right door for every type of home.
Uw up to 0.70
35 - 45
Secured by Design & PAS 24
Here at Feneco Systems, we strive in placing our valued customers at the forefront of everything we do. Not just this, but our team are top experts in the industry and can provide you with the very best advice for your home improvement projects.
Get in Touch
To find out more about our Internorm windows, get in touch with us today. You can receive a FREE online quotation by clicking the button on the right hand side of this page. Choose the Internorm windows of your choice here at Feneco.
