Composite windows are an innovative home improvement designed to passivehouse standards and to offer the best performance to homeowners, architects and property developers in Coleraine, Northern Ireland. Receive your free quote in under two minutes by using our online quoting tool.
Composite windows are an innovative home improvement designed to passivehouse standards and to offer the best performance to homeowners, architects and property developers in Coleraine, Northern Ireland. Receive your free quote in under two minutes by using our online quoting tool.
If you are looking for a superior window solution for your property in Coleraine, our composite windows are the perfect choice. Creating using both timber and aluminium, these windows combine the best high performance features of aluminium with the thermal efficiency of timber.
Thanks to their dual composition, these windows are extremely strong and durable. Aluminium is lightweight yet robust, allowing it to support vast panels of triple glazing. With this, you will experience high thermal efficiency.
Surrounded by the external aluminium-clad profile, a timber core is placed inside a layer of foam. Timber is a renewable material and is an excellent insulator. 75% of all aluminium ever used is also still in use due to its abundance and easy to recycle nature. This makes our composite windows not only high performers but also a green choice for your property. Find out more by getting in touch today.
Get in Touch
As mentioned, these windows come with triple glazing as standard. Experience U-values as low as 0.60 W/m2k, helping your property stay warm throughout even the coldest of Northern Ireland winters. We also offer four main Internorm composite window styles to choose from. No matter which design you select, you will benefit from the same high performance.
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
We also offer 4 styles of passivehouse uPVC-Aluminium composite windows. Just like their timber-aluminium counterparts, they offer exceptional energy efficiency and are perfect for property developers and architects seeking to create a sustainable and modern home in Northern Ireland.
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
If you would like to find out more about our range of premium composite windows, please do not hesitate to get in touch with our team today. We would be more than happy to provide you with more information, as well as providing you with an estimate.
To ensure that we have something for all of our customers in Coleraine and the surrounding Northern Ireland areas, we offer a range of different customisable features for our composite windows. This ensures that your new addition will match the aesthetic of your property.
As well as offering classic timber types such as larch and spruce, our composite windows can also be created using oak, ash and walnut. If you are looking for an open grain finish, walnut may be more preferable. For a light and warm finish, ash is ideal. If you are not sure what would look best within your Northern Ireland home, please get in touch. Our team have an eye for detail and would be happy to help.
Once you have chosen your design and colour, you can further customise your new addition with our range of accessories and handle options. We offer both contemporary and traditional hardware accessories, so we are sure we have something for everyone. To explore this range, please get in touch.
If you would like to find out more about our composite windows and see them in action, please take a look at our case studies. Here you can see how they can truly transform a home in Coleraine or the local Northern Ireland areas. Explore their benefits and see how they look in-situ.
At Feneco Systems, we offer a broad range of home improvements alongside our incredible composite windows. If you would like to explore our other options, please come along and visit our Coleraine showroom. Here you can see our products up close at your leisure, and also get any help that you may need from our friendly staff.
When you visit our showroom we are more than happy to help you find the perfect windows, doors and more. Our team know our products through and through, allowing them to provide our customers with the information they need to choose the right installations for their home. Get in touch today to make an appointment.
Here at Feneco Systems, we strive to meet and exceed the expectations of our valued customers.
Our customer-focused ethos ensures that we dedicate ourselves to each and every home improvement project that we assist with. With a team that is highly experienced within the industry and plenty of product knowledge, we are confident that we can provide you with 5-star service.
With plenty of experience working with homeowners, property developers and architects in Coleraine, we are here to help you. Please get in touch with our team today with any queries you may have, and we will be sure to find you the ideal product for your next project.
Get in TouchTo find out more about our market leading composite windows, please get in touch with our team here at Feneco. If you would prefer to get a free estimate over the phone, please give us a call. This way we can discuss our range and take your details for a composite windows price in under two minutes. We look forward to hearing from you.