Precision built luxury windows and doors
Custom steel windows and doors from Portella feature Narrow sight lines, exceptional strength, and unique sizing not to mention virtually limitless design options.

Precision built luxury steel windows and doors that are timeless, beautiful and minimalistic

Breathtaking Beauty. Breakthrough Performance

For over 20 years, Portella has pioneered new technologies that lead the industry. With our patented, thermally broken frame system, former limitations in customization simply disappear. Our innovations open up a world of possibilities for designers and architects who need impossible sightlines, the highest energy efficiency ratings and extreme durability with expressive elegance.

Now you can achieve your ultimate vision and reimagine architecture without boundaries. And we’ll be here to guide you every stop of the way.

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Custom steel windows and doors from Portella feature narrow sight lines, exceptional strength, and unique sizing not to mention virtually limitless design options.

Announcing Portella’s New Thermally Broken Profile Patent

Announcing Portella’s New Thermally Broken Profile Patent

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The Trend to Large Format Doors Means Complex Installations

The Trend to Large Format Doors Means Complex Installations

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Portella Announces The Contemporary 3-D Metal Door

Portella Announces The Contemporary 3-D Metal Door

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Adolphus Hotel (Dallas, TX) Window Walls

Adolphus Hotel (Dallas, TX) Window Walls

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Joseph Fowler Homes Austin Texas

Joseph Fowler Homes Austin Texas

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Steel Shower Enclosure Dallas Texas

Steel Shower Enclosure Dallas Texas

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Roof Panels – Brian Bailey Homes, Inc

Roof Panels – Brian Bailey Homes, Inc

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Bainbridge Island, Seattle Washington

Bainbridge Island, Seattle Washington

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Santa Barbara Ranch Style Home

Santa Barbara Ranch Style Home

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Steel Sliding Doors – Double Horn Ranch Texas

Steel Sliding Doors – Double Horn Ranch Texas

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Performance

Portella is proud of our commitment to continue product development, testing and certification complience. Our doors and windows are third-party tested and have ASTM, NFRC, AAMA, and soon Florida Building Code certifications.

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A Solution to Steel Window and Door Thermal Challenges

Artisan Series is a solution for luxury residential, boutique commercial applications or historical projects. Our Artisan Series is NOT a variation of existing non-thermally broken European extrusion products or “enhanced” thermally broken profiles. Portella’s Artisan specialty doors utilize a GRP (fiberglass reinforced polyetherimide) which is a non-conducting material with steel, that combines strength and superior thermal performance. Manufacturers offering only insulated glass without addressing the thermal transfer of the frame does to solve the problem. We invite you to view the Artisan design guide on our Artisan product pages.

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The Ronson Home - front view

Portella Difference

Portella understands what Architects are looking for. Here is what makes Portella different:

  • Trademark narrow-profile sightlines
  • Factory installed glass with Low-E options for maximum energy efficiency
  • NFRC rated thermally broken laser fusion welded and cold-rolled options
  • Wet glazed glass eliminates any possibility of moisture penetration
  • Clear and concise communication from quotation to shop drawings
  • Tested and engineered designs
  • One point communication with knowledgeable Portella Project Managers
The Ronson Home - front view

Blog & News

Hidden Architecture

Underground tunnels. Secret rooms. Speakeasies. Priest holes. Panic rooms. Hidden passageways. For thousands of years, humans have used architecture to hide secrets, escape from persecution, and protect themselves and the things they love.  From ancient times to modern day, people have been hiding things that are important to them and architecture is an important tool […]

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Architecture and Energy Consumption

Climate change. Energy efficiency. Solar power. Electric vehicles. Renewable energy. Recycling. Everywhere you look, there are new buzzwords and conversations happening about the ways in which we harvest and use energy. For most Americans, the way we can influence energy consumption starts at home with our houses and our vehicles. We all know that hybrid […]

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