Crafting Excellence in Steel Doors and Windows
At Portamet, we design and manufacture bespoke steel doors and windows for premium interiors and architectural projects across Europe and the USA.
About us
Portamet was founded with a clear purpose: to bring timeless design and unmatched craftsmanship to the world of steel doors and windows.
For over 2 decades, we have specialized in manufacturing high-end, thermally broken and non-thermally broken steel glazing systems that combine minimalist aesthetics with structural integrity. From luxury residences to commercial interiors, we help designers, architects, and homeowners turn ideas into long-lasting reality.
What We Do
At Portamet we are experts in Steel Glazing Solutions. We offer a full-service manufacturing solution for:
Custom Steel Doors – including single, double, sliding, pivot, and bi-fold styles
Steel Windows – tilt-and-turn, fixed, awning, and casement types
Glazed Steel Partitions & Internal Glass Walls – for open-plan layouts and modern interiors
Fire-Rated and Thermally Broken Systems – engineered for performance, certified for safety
Architectural Collaboration – technical support and detailed shop drawings for each project
Why Choose Portamet?
Design-Driven. Detail-Obsessed. Globally Trusted.
Steel Expertise – Years of experience working with premium steel systems from brands like Forster, Secco Sistemi, Ottostumm, Jansen, and RP Technik
In-House Production – Every product is fabricated in our European facility to ensure precision, control, and flexibility
Tailored Projects – We don’t do off-the-shelf; every door and window is customized to meet your project's specific needs
Cross-Border Delivery – We serve clients across Europe, the UK, and the United States with seamless logistics
Who We Work With
Trusted by Architects, Builders, Door and window manufacturers and Private Clients
Our clients include
- award-winning architects,
- interior designers,
- construction firms
- homeowners.
Whether it's a Manhattan townhouse, a Warsaw loft, or a villa in the Alps, our steel doors and windows bring elegance, durability, and functionality to every project.
Our Partners & Systems
We Work with the Best Steel Systems in the World
To ensure premium quality and long-lasting performance, we manufacture using industry-leading systems such as:
Forster Unico XS & Presto
Secco OS2 75 & EBE 85
Ottostumm W40, W 50 TB & W75 TB
Jansen Arte & Janisol
RP Technik Thermo 50 & 60
These systems allow us to deliver both thermal efficiency and slimline aesthetics that meet the highest architectural and environmental standards.
WE SUPPLY EUROPE, USA & CANADA
Our factory is based in Poland (Gdansk).
From that factory, our projects are being shipped across Europe, USA and CANADA
We work both with B2B and B2C customers.