Bespoke Black Steel Doors

PORTAMET Glass doors & windows is a leading producer of bespoke glass doors and windows across CE Europe.

At PORTAMET Steel Door & Windows we produce a  range of standard and custom size black steel doors and windows.

PORTAMET is a leader in manufacturing high-quality steel and wrought iron products throughout CE Europe. With our Production facility based in northern Poland, we can easily supply every European country within 24H.

Our trademarks are high quality and the ability to deliver big orders within a short period of time. Thanks to these values biggest chain stores in Poland (over400 shops together) chose Us as their loft door supplier. We believe that is the best recommendation.

steel door sby portamet crittal style

All kind of Door Types & Configurations

We specialize in custom steel doors of all types. Whether you need a feature door for a boutique apartment or large-scale systems for a commercial property, Portamet delivers tailored solutions, including: 

  • Single Steel Doors – Elegant simplicity with limitless design options
  • Double Doors / French Doors – Balanced style and wider openings
  • Sliding Steel Doors – Smooth operation and space-saving functionality
  • Steel Room Partitions – Divide areas without blocking light
  • Pivot Steel Doors – Statement entrances with effortless swing
  • Bi-Folding Door Systems – Expandable steel glass walls for dynamic spaces

Each type is available with bespoke detailing, fully customized dimensions, and your choice of glazing and finishes.

Portamet custom

Bespoke Steel Doors - Tailored to Your Vision

Each Portamet steel door is custom-made to meet the unique aesthetic and functional needs of your space. We do not offer standard models – instead, we build each door from scratch according to your exact requirements. 

Design Possibilities: 

  • Classic multi-pane Crittall-style designs
  • Minimalist full-glass steel doors
  • Arched, oversized, or asymmetric profiles
  • Custom side panels, transoms, and fixed partitions 

Finishes & Colors: 

  • Signature matte black
  • Any RAL color
  • Any NCS Color
  • Industrial patinas or satin finishes on request 

Hardware Customization:

  • Premium European handles and hinges
  • Invisible closers, magnetic locks, and soft-close mechanisms 

Every detail, from weld quality to glass installation, is handled by our experienced team in our own production facility. The result? Bespoke steel doors that combine beauty, strength, and flawless function.

steel doors crittall style glass selection

Full freedom of glass selection

Our doors come with a wide range of glazing options, which can be selected when you order your door. 

Single, double, triple or quadruple layers of glazing can be installed to suit your budget and energy requirements. Single glazing has the lowest solar gain. This option is available in either clear or bronze tinted glass (which reduces solar gain but also allows more light into your home). 

Double glazing consists of two sheets of glass separated by an inert gas such as argon or krypton; this increases insulation performance and reduces heat loss through the window frame itself. It also improves soundproofing properties compared with single-glazed windows due to its increased mass. 

Triple glazed units have even more thermal efficiency than double glazed ones due to their extra layer between each pane of glass (they are generally used where very high levels of insulation performance are required). Finally quadruple glazing adds another layer on top again for even greater thermal efficiency.

 

 

 

 

steel doors by portamet

Direct from the Manufacturer – Portamet

At Portamet, we design and manufacture bespoke steel doors with a signature look inspired by the timeless style of steel doors. Every project is tailored, every detail considered. Whether for residential interiors, commercial developments, or high-end architectural spaces, we bring your vision to life with unmatched precision and craftsmanship. 

When you choose Portamet, you buy directly from the manufacturer, ensuring full design flexibility, competitive pricing, and expert support throughout your project.

 

steel doors and windows. metal frame doors nyc and canada

Trusted by Architects, Designers, Developers & Homeowners

 Portamet is trusted by professionals across Europe for precision-engineered, bespoke steel doors. 

We collaborate closely with:

  • Architects looking for refined architectural glazing
  • Interior designers seeking statement features
  • Developers with large-scale or time-sensitive projects
  • Private homeowners who want the finest steel doors available 

Whether you need just one door or an entire series of partitions and openings, our in-house production ensures reliable lead times, quality control, and full transparency.

Portamet export of crittall doors

We ship Worldwide

We ship our products from Poland all over the world.

Thanks to our modern logistic center we are able to ship over 250 projects each day. 

 

Let’s Start Your Project

Your steel door project starts with a conversation. Share your ideas, drawings, or photos, and we’ll prepare a tailored proposal with technical insights and a precise quote. 

Whether you’re building new, renovating, or designing a standout space, Portamet is your partner in custom black steel doors. 

Contact us today to discuss your project – and experience the craftsmanship that sets Portamet apart.