Composite windows offer superior performance to any Ireland property, be it Coleraine, Belfast, Lisburn, our range is the perfect fit! Thanks to their composite construction, they combine the benefits of multiple construction materials whilst eliminating the downsides. Even better, they’re designed to meet Passivhouse certification standards, so you can be assured of top-notch energy performance. Contact our friendly team today to find out more about what our range of composite windows could do for your Ireland home.
Composite windows offer superior performance to any Ireland property, be it Coleraine, Belfast, Lisburn, our range is the perfect fit! Thanks to their composite construction, they combine the benefits of multiple construction materials whilst eliminating the downsides. Even better, they’re designed to meet Passivhouse certification standards, so you can be assured of top-notch energy performance. Contact our friendly team today to find out more about what our range of composite windows could do for your Ireland home.
For a superior upgrade to your Ireland home, there’s no better choice than composite windows. Our elegant, stylish profiles combine sturdy timber with sleek aluminium to create truly exceptional windows and Bifold Doors Ireland for your Ireland home.
Thanks to the timber core, these windows provide excellent insulation and phenomenal strength. The strength is boosted even further thanks to the aluminium outer and the tough triple glazing. Our range of composite windows are about as strong and unbreakable as it gets!
Aluminium also offers high durability and longevity, which means you’ll be enjoying the benefits of these amazing windows for years to come! And it won’t take much effort from you to keep them looking their best – the odd wipe with a damp cloth is all they need!
A property that both aluminium and timber share is their environmental friendliness. Timber is highly renewable and incredibly insulating, allowing it to boost the energy efficiency of your Ireland home. And aluminium is pretty much the gold standard for eco-friendly construction materials. It’s infinitely recyclable and highly abundant, not to mention that it’s simultaneously lightweight and very strong. Putting both these materials together, along with a foam filler layer between them, means truly phenomenal thermal performance for your home. This could see your energy usage plummet, meaning lower energy bills and a smaller carbon footprint!
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As standard, our range of composite windows all come with triple glazing to give your Ireland home a literal extra layer of thermal protection. These fantastic windows can achieve U-values as low as 0.6w/m2k, which is about as low as it gets, meaning they are exceptionally thermally efficient. That means no matter how cold the Ireland weather gets, your home will be staying warm and keeping the heat inside where it belongs.
We offer four different Internorm styles for our timber aluminium composite windows, so no matter your Ireland home’s style, you’re sure to find a stunning design to suit!
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
In addition to the timber aluminium composite windows and Passivehouse Doors Ireland with Passivehouse Windows Ireland, we also offer a range of uPVC aluminium composite windows. They offer similarly superior performance to the timber aluminium windows, but thanks to the clever implementation of two very lightweight construction materials, these windows are very light, and therefore very easy to operate.
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
Find out more about our luxurious range of composite windows by contacting our friendly team today, or book a free design consultation!
Every Ireland home is different, so we offer a wide range of customisation options to ensure that you can create the perfect windows for your home. You’ll be able to choose between a large number of colours, finishes, woodgrain foils and hardware.
We offer both contemporary and traditional styles. Our design team have an eye for detail, so we’ll be able to work closely with you to create a completely bespoke window solution to perfectly suit your Ireland home.
See for yourself what our range of windows look like in homes throughout Ireland by exploring the case studies section of our website. Here you’ll be able to see some real life projects that we’ve completed, so you can see exactly what our composite windows look like in-situ!
For a more hands-on way to get a feel for how these windows look and function, why not pop on down to our Coleraine showroom? You’ll be able to see and try out our range of composite windows, as well as all of our other products! Our friendly staff will be on hand as well, to answer any questions you might have or share their wisdom and expertise with you.
Get in touch today to book an appointment to come and explore all of our products in one place!
Just as Internorm design their Passivehouse windows to meet and beat Passivhaus certification standards, here at Feneco Systems, we work hard to meet and beat the expectations of our Ireland customers.
We put our Ireland customers first, and at the heart of everything we do. You can be assured that we’ll be there every step of the way to make sure everything’s working as planned. From first quote to aftercare, we’re always available to help you with any queries you may have.
Get in TouchGet in touch with the team today to find out more, or head over to our quoting engine for a free, bespoke estimate!