Window Profile Style
HF 520
The HF 520 timber-aluminium window boasts an impressive design that is flush, uniquely modern and sure to impress. Alongside a slim frame that allows maximum light into the interior, it’s also impressively burglar-resistant, with i-tec Glazing that ensures excellent stability. This designer window perfectly combines natural timber and flush aesthetics. Its timeless beauty and eco-friendly attributes make it highly desirable for all kinds of applications.
Available in:
40+
Expected service life in years
Thermal Efficiency
0. 71W/m²K
Sound Reduction
35 - 47 dB
Profile Width
101 mm
Security
RC2
Locking
Fully concealed
Construction Depth
90mm
Key Features
Exceptional Thermal Performance
Our stylish Timber-Aluminum composite windows are engineered with insulation in mind. They can achieve U-values as low as just 0.62 W/(m²K), comfortably better than many of the most reputable competitive systems on the market, thanks to the triple glazing, insulation of the aluminum cladding and triple gaskets.
Superior Noise Insulation
Internorm’s bespoke Timber-Aluminum windows are engineered with triple glazing and triple gaskets as standard. Combining all the benefits of these carefully engineered premium products means that Internorm Timber-Aluminum windows and doors can achieve up to 47dB sound reduction, significantly improving the quality of life and wellbeing of the homeowner.
Enhanced Security
Internorm Timber-Aluminum windows deliver a standard of security that can be relied upon for decades. Quality hardware and concealed locking systems resist even the most advanced break-in techniques. This allows these windows to achieve PAS 24 status, while scoring to RC1N and RC2 anti-burglary standards.
Bespoke Design Options
Internorm windows are manufactured to your individual requirements and are totally bespoke. Choose from four profile designs to suit any architectural style, a choice oak, spruce, larch, ash and walnut internally and any RAL colour externally, the windows are tailored to your project. Unique to Internorm, Timber-Aluminum windows can be combined with uPVC-Aluminum products, creating a stunning, unified feel across any style of home.
Innovative Technologies
Internorm has been an innovator and trailblazer within the fenestration industry for over 90 years. Our I-tec innovations mean that our products can perform to the highest standards, are low maintenance, are keep up with today’s technology but being suitable for smart home integration.
Low Maintenance, Long Lifespan
Timber and aluminum are two of the most durable materials available. Combine the two, add a long history of quality engineering and innovation, and what you get are Internorm windows that perform to perfectly for decades. Invest in Internorm windows and you will not only enjoy the beauty and thermal comfort but also considerable energy savings over years to come.