Jansen Janisol Arte Outswing Steel Windows by Portamet
This video showcases the elegant Jansen Janisol Arte outswinging steel windows, manufactured and installed by Portamet. These luxury steel windows exemplify a blend of design elegance, advanced engineering, and precise craftsmanship. With the ultra-slim Janisol Arte profile system, Portamet delivers steel windows that combine the timeless charm of classic industrial-style glazing with cutting-edge performance. The result is a bespoke fenestration solution ideal for historic renovations, modern builds, and high-end residential or commercial applications. Each outswinging window is a testament to Portamet’s quality workmanship, providing an architectural statement piece that also meets rigorous standards for thermal efficiency and durability.
Timeless Elegance & Modern Engineering
At the heart of each window is the Jansen Janisol Arte 2.0 profile – a state-of-the-art steel window system that achieves sightlines as thin as 25 mm. These impossibly slim frames give the windows a refined, minimalist aesthetic while maximizing natural light. Despite their delicate look, the engineering is robust: the steel allows expansive panes of glass (each operable sash up to ~1000 × 2400 mm and 150 kg) without sacrificing stability. In fact, this product line represents the pinnacle of window engineering and manufacturing – offering expansive glass with impossibly thin steel frames and top-tier strength. When the highest quality, durability, and design precision are required, there is simply no substitute for the Janisol Arte steel system.
The Janisol Arte windows are also thermally broken, meaning they incorporate advanced thermal insulation despite the metal frame. This ensures modern energy efficiency on par with contemporary aluminum or wood windows, so owners enjoy the beauty of steel windows without comfort compromises. Insulating thermal breaks and high-performance glazing allow these steel windows to meet stringent energy codes in both Europe and North America. In practice, that translates to cozy interiors free of drafts or condensation, even in cold climates – a huge leap from the single-pane steel windows of the past. The combination of timeless steel elegance with 21st-century engineering gives architects and builders the best of both worlds: an authentic steel-and-glass look and reliable modern performance.
Heritage Charm & Contemporary Style
One key advantage of the Janisol Arte system is how it bridges past and present design. It was originally engineered for heritage renovations, enabling like-for-like replacement of vintage steel windows with new units that preserve the original character. The ultra-slim profiles can closely mimic historic steel windows (often found in 19th- and 20th-century factories, lofts, or Art Deco buildings), satisfying conservation requirements for listed properties. Architects in the UK, for example, appreciate how Janisol Arte serves as an ideal architectural steel glazing solution for heritage projects – it maintains period-authentic sightlines and divided-lite patterns while vastly improving thermal and weather performance. Buildings retain their vintage industrial charm, but occupants gain the benefits of double glazing, weather seals, and eliminated drafts.
At the same time, Janisol Arte steel windows are equally at home in modern luxury architecture. Sleek and slender, these profiles complement cutting-edge designs where large expanses of glass and clean lines are desired. Developers of contemporary homes and commercial spaces (lofts, galleries, hotels, etc.) use Portamet’s steel windows to create chic industrial-chic facades and interiors. The narrow frames produce a high glass-to-frame ratio, flooding modern interiors with daylight and panoramic views. Designers can achieve floor-to-ceiling steel-framed glass walls or elegant grid-style windows that add visual drama to a space. The result is a versatile aesthetic – the same window system can honor traditional styles or deliver ultra-modern minimalism, all with the unmistakable elegance of steel.
Heritage renovation projects often specify Janisol Arte windows to preserve historic appearances while upgrading performance. In this image, a renovated early 20th-century building features new steel windows by Portamet, maintaining the classic divided-light design and slim profiles. Such replacements seamlessly retain the building’s vintage character, demonstrating how Janisol Arte windows meet conservation guidelines with modern benefits like thermal insulation and weatherproofing.
In modern contexts, Janisol Arte enables architects to push the envelope of architectural glazing. The strength of steel supports large openings and creative configurations that would be challenging for other materials. Whether it’s a new urban penthouse with a steel-framed glass facade or a luxury country home with expansive garden views, these windows provide a distinctive upscale look. Interiors feel brighter and more open, yet the occupants remain comfortable year-round thanks to the system’s advanced engineering.
Modern luxury builds benefit from expansive steel-framed glazing that merges indoor comfort with outdoor views. This contemporary home showcases Portamet’s slimline steel windows forming a dramatic glass facade, demonstrating how minimal frames can create a stunning architectural statement for high-end residences. Such designs highlight the flexibility of steel window systems in modern homes, offering floor-to-ceiling glass panels with the strength and stability only steel can provide. The result is a bright, open interior flooded with natural light – achieved without compromising on energy efficiency or security.
Craftsmanship & Quality by Portamet
Portamet’s role in this showcase is more than just assembling a kit of parts – it’s about true craftsmanship and quality assurance at every step. Specializing in custom steel and glass products since 2011, Portamet has built a reputation for exceptional quality and workmanship. Each Janisol Arte window is handcrafted to order in our facilities by skilled metalworkers. We combine traditional techniques (meticulous welding, grinding, hand-finishing) with modern fabrication technology to ensure every window meets the highest standards of precision. From the alignment of each mullion to the smooth operation of the outswing hinges, no detail is overlooked.
To guarantee longevity and performance, Portamet uses only the finest materials and processes. The steel frames undergo thorough corrosion protection – including hot-dip galvanization and durable powder-coat finishes – so that your windows will stand the test of time without rust or warping. We offer an extensive palette of finishing options: any RAL color in matte, satin, or gloss; special metallic or textured coatings; even authentic Corten steel for a weathered patina look. Whether you desire classic black steel windows or a custom color to match a historic facade, Portamet delivers with artisan quality. The commitment to craftsmanship means our windows not only look stunning but also glide smoothly, seal tightly, and perform reliably for decades. When you choose Portamet, you’re investing in heritage-quality construction made to modern perfection.
Versatility & Bespoke Solutions
Every project is unique, and the Janisol Arte steel window system offers the flexibility to meet virtually any design requirement. Portamet works closely with architects, contractors, and homeowners to deliver bespoke fenestration solutions tailored to each project. The system supports a wide range of configurations and opening types, all while maintaining the same slim sightlines and thermal integrity. Available window styles include classic side-hung casements (single or French double windows that can open outward or inward), top-hung awning windows that project outward, horizontal or vertical pivot windows, fixed picture windows, and even steel-framed doors that match the window profiles. This versatility means you can have a consistent, elegant steel look across an entire project – whether it’s a fixed loft window or an outswinging casement for ventilation, Janisol Arte has a solution. Modern architects especially enjoy the creative freedom this system provides, enabling complex window assemblies or minimalist ribbon windows using the same slender profiles.
Custom sizing and detailing are standard with Portamet. We fabricate each steel window to the exact dimensions and specifications of your build, ensuring a perfect fit and seamless integration into the surrounding construction. Need bespoke divided light patterns or specific hardware? We accommodate that too. Our team can integrate custom mullion grids or grille designs (for example, to replicate historic window pane layouts) without sacrificing performance. High-performance locks, handles, and hinges are chosen to complement the luxury aesthetic while ensuring smooth operation and security. Because Portamet windows are made-to-order, architects and designers have immense freedom to realize their vision—be it a wall of sleek floor-to-ceiling glass or a series of charming cottage windows with modern functionality.
Below are some of the key features and benefits of Portamet’s Jansen Janisol Arte outswing steel windows:
Ultra-Slim Profiles: Impossibly thin frame profiles (as narrow as 25 mm) maximize glass area and natural light, creating bright interiors with elegant, slim sightlines. The slender steel look is both timeless and sought-after in luxury architecture.
Thermally Broken Steel Frames: Advanced thermal break technology ensures these steel windows meet modern energy codes in the UK, USA, and beyond. Enjoy the industrial-style aesthetic with comfort—warm in winter, cool in summer, and highly energy-efficient.
Outswinging Casement Design: The showcased windows are outswing casements, meaning they open outward for easy ventilation without intruding on interior space. This outswinging steel window style is ideal for both traditional and contemporary designs, offering a classic look with modern hardware and weathertight seals.
Heritage & Modern Applications: Janisol Arte is perfect for heritage renovations, allowing architects to replace old steel windows while preserving historical appearance. Simultaneously, it’s a top choice for modern builds and luxury residential projects that want a high-end, minimalist steel aesthetic. From restored warehouses to new glass-encased extensions, these windows elevate the design.
Unmatched Strength & Durability: Built with high-grade steel, the windows are extremely robust. They can support large glass panels and endure harsh conditions (wind, weather, heavy use) without warping. Multi-point locking and the inherent strength of steel provide excellent security and longevity.
Premium Finishes & Materials: Choose from galvanized steel (painted in any color), stainless steel for a sleek or coastal-ready finish, or Corten steel for a bold weathered look. Portamet’s finish options (matte, satin, gloss, textured, patina) allow you to customize the windows to complement any architectural style – be it a historic facade or a modern interior design.
Expert Fabrication & Installation: Every window is crafted by Portamet’s expert team with meticulous attention to detail, ensuring smooth operation and a precise fit. Professional installation by our experienced crew means each unit performs as designed – sealing out the elements and enhancing your space with no hassle.
Trusted Globally – From the UK to the USA
Portamet is proud to be a leading steel window manufacturer serving clients in the UK, USA, and worldwide. Our steel windows have been featured in bespoke architectural projects across Europe and North America, from heritage restorations in London to modern luxury homes in New York. We understand the needs of architects and builders in different markets – whether it’s meeting British building regulations for architectural steel glazing in conservation areas or satisfying the high standards of upscale homeowners in the United States. This international expertise makes Portamet a trusted partner for projects that demand the very best in steel fenestration.
Whether you’re an architect designing a landmark project, a contractor seeking a reliable supplier of luxury steel windows, or a homeowner aiming to elevate your property’s style, Portamet offers the expertise and personalized service to bring your vision to life. We invite you to contact Portamet or visit our website to learn more about the Jansen Janisol Arte outswing steel windows and how they can enhance your project. Discover how our bespoke steel window solutions combine heritage elegance, modern innovation, and masterful craftsmanship – delivering a stunning result that will stand the test of time