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.

Request a Quote
Contact Us Today to Get Your Project Moving.
Request a Quote

Get ideas and inspiration in our gallery

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

Portella Announces The Contemporary 3-D Metal Door

Portella Announces The Contemporary 3-D Metal Door

View Project

Want to find more ideas?

Visit our project gallery to see more solutions
steel doors and windows new york city

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.

steel doors and windows new york city
best steel doors and windows houston tx

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.

best steel doors and windows houston tx
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

Portella Announces Partnership with Ballistic Glass and Armor Solutions

April 27, 2021– Portella Steel Doors and Windows has announced a partnership with Ballistic Glass and Armor Solutions to offer state-of-the-art forced entry and ballistic glass coatings. This gives more options to their customers to further customize their doors and windows based on their safety needs. This partnership is a reflection of Portella’s ongoing commitment […]

Read
Portella Pivot Hardware Partnership with FritsJurgens

April 27, 2021– Portella Steel Doors and Windows has announced a partnership with FritsJurgens to offer cutting-edge, self-closing pivot hinges, as an option for their customers to further customize their doors. Portella’s partnership with FritsJurgens reflects their continued commitment to design and quality when it comes to every component of their custom steel windows and […]

Read