The Reynaers Master Line 8 is one of the most capable aluminium systems available for energy-efficient building. Its consistent frame geometry across all insulation levels means architects can specify with confidence – the sleek look remains constant, while internal thermal break materials and seals are varied to achieve the required performance threshold, whether high insulation, low energy, or full Passivhaus certification.
Full technical information for the Reynaers ML8 aluminium window system, including dimensional guidance, glazing, and performance data.
| Product guidance – as standard | |
| Min. Visible width frame-vent: inward opening | 97mm |
| Min. Visible width frame-vent: outward opening | 133 mm |
| Min. Visible width T-profile | 80 mm |
| Max. height vent | 2800 mm |
| Max. width vent | 1700 mm |
| Max. weight vent (element)Turn-tilt | 200kg |
| Overall system depth frame | 77 mm |
| Overall system depth vent | 87 mm |
| Rebate height | 27 mm |
| Min. Glass thickness vent | 13 mm |
| Max. Glass thickness vent | 72 mm |
| Product specification | |
| Double glazing | 1.3 W/m²K (depending on the frame/ vent combination and glass unit specification). |
| Triple glazing | 1.0 W/m²K (depending on the frame/ vent combination and glass unit specification). Inward and outward opening casement windows. |
| Glazing method | Drained and ventilated glazing with EPDM synthetic rubber gaskets. |
| Finishing | Choose from a full range of polyester powder coat colours and anodised finishes. |
| Dual colour | Dual colour available offering a different colour inside and out. |
| Profile assembly | Weather stripped profiles with polyamide thermal breaks. |
| BRE rating | Corresponds to the BRE Global Green Guide online generic specification for windows and achieves a summary rating of A, Element Number 1231500007. |
| Security | Meets the very stringent requirements to be awarded the Secured By Design accreditation. |
| Air permeability | Up to 600 Pa (class 4). |
| Wind load resistance | Up to 2000 Pa (class 5). |
| Water tightness | Up to 600Pa (class 9A). |
| Acoustic performance | Rw (C;Ctr) = 36 (-1;-4) dB/ 44 (-2;-5) dB, depending on the glazing type. |
Download technical datasheets, system brochures, and specification documents for the Reynaers ML8 aluminium window system.
The Reynaers Master Line 8 is available in three configurations to suit high-insulation, low-energy, or Passivhaus buildings, with the Passivhaus option certified by the Passivhaus Institute. The frame geometry is consistent across all variants – only the internal thermal break materials and seals change to achieve the required insulation levels.
This approach gives architects and specifiers the freedom to select the appropriate performance level for a project without altering the external appearance of the building. It is a considered system, where technical information is embedded in the architecture rather than imposed upon it.
Reynaers aluminium windows in the ML8 range meet the stringent requirements of Secured by Design accreditation, providing the highest level of security alongside outstanding weather resistance. Air permeability is tested to Class 4 (up to 600 Pa), wind load resistance to Class 5 (up to 2,000 Pa), and water tightness to Class 9A.
Acoustic performance reaches up to Rw 44 dB depending on glazing specification – making the ML8 a strong option for homeowners and commercial projects in noise-sensitive locations. With a full range of polyester powder coat and anodised finishes, including dual colour configurations, the system delivers both technical capability and considered aesthetic finish.
Master Line 8 windows combine cutting-edge thermal technology with a minimalist aesthetic. Their slim frames maximise natural light, while a range of opening configurations allows them to adapt to different spaces and requirements. With strong security features and a wide choice of finishes, they deliver both style and substance.
Answers to the key technical and specification questions our architects, specifiers, and homeowners ask about the Reynaers Master Line 8 aluminium windows.
The Reynaers ML8 achieves U-values from 1.3 W/m²K with double glazing and from 1.0 W/m²K with triple glazing, depending on the frame and glass unit combination specified.
Yes. One of the three ML8 insulation variants is certified by the Passivhaus Institute, making it suitable for buildings required to meet Passivhaus certification thresholds.
No. The external frame geometry of the Reynaers ML8 remains constant across all three insulation levels. Varying performance is achieved through internal thermal break materials and seals, not changes to the visible profile.
The Reynaers ML8 meets the requirements for Secured by Design accreditation – one of the highest levels of security testing available for aluminium windows in the UK.
The Reynaers ML8 is available in a full range of polyester powder coat colours and anodised finishes. Dual colour configurations – with a different finish inside and out – are also available.
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from design to installation.
We purchased a combination of Alu-Clad windows, Lift & Slide doors and entrance glazing from Zyle Fenster for our family home.
Every member of the team was knowledgeable, approachable and highly professional. Manufacturing quality is outstanding and the installation was carried out with real attention to detail. Even after completion, they followed up to ensure everything was perfect.
It’s rare to find a company that delivers exactly what they promise. We would happily recommend Zyle Fenster to anyone building or renovating a home.
Seán & Emma R. – County Meath
Our architect specified Reynaers aluminium systems and recommended Zyle Fenster for the supply and installation.
The large glazing panels have completely changed the feel of the house while maintaining excellent thermal comfort throughout the winter. The installers were meticulous and every junction was finished beautifully.
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A premium product installed by a premium company.
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Our conservation project required slim glazing without compromising performance, and Zyle Fenster recommended their vacuum glazed timber sash windows.
The result is outstanding. The traditional appearance has been preserved while the improvement in warmth and noise reduction is remarkable. You simply wouldn’t know they contain such advanced technology.
Excellent communication, excellent installation and an exceptional product.
Michael & Sarah K. – County Kilkenny
Finding authentic timber sash windows that also met modern energy standards wasn’t easy until we found Zyle Fenster.
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The installation team treated our home with great respect and left everything spotless each evening. We have received countless compliments from neighbours.
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We wanted a large glazed feature overlooking the garden while still achieving excellent thermal performance. The timber curtain wall supplied by Zyle Fenster exceeded every expectation.
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Whether you are an architect specifying for a new project, a self-builder planning your custom home, or a developer working to a programme, our team is here to help. Get in touch for technical advice, product information, or to request a quote.
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