Burlingame's Premier Provider for the Finest Quality Steel Windows & Doors

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Burlingame Custom Steel Windows and Doors

For the best Burlingame steel windows and doors, look no further than Portella! We’ve been providing award-winning service since 1999 to homes and businesses in Burlingame.

You won’t find custom steel windows and doors as well designed as ours. Fashion and function are deftly intertwined to create unique, cutting-edge designs to beautify your home or business. 


How Custom Steel Windows & Doors Benefit Burlingame Businesses

One of the most important benefits of custom steel doors for businesses is that they keep energy costs low due to their insulation, which protects your space from extreme temperatures. Steel doors also reduce air condensation around windows and panels. 

Steel doors require very little maintenance as they resist corrosion, are extremely durable, and will last for years. If you’re looking to save time and money while still increasing the value of your building’s interior, then a custom steel door is a perfect choice.

Best of all, custom steel doors are stylish and easily blend with modern designs. They’re available in various colors to suit your individual taste or match your building’s theme. You’ll be able to create an open and welcoming atmosphere for customers without sacrificing privacy or security.

The Thermal Window Difference

Thermal windows are a great cost-saving move for your home or business. Portella’s thermally broken steel windows with low e-glass are built with recycled material. They are designed to minimize the effects of UV rays, which will keep your home cool during the summer months. 

Thermal windows also reduce sound transfer, allowing you to enjoy the ambiance of a room with minimal noise from the outside. 

Portella Announces The Contemporary 3-D Metal Door

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Portella Product Lines

Storefront Interior & Storefront Exterior

We offer a variety of sleek and modern door and window designs, perfect for any type of business on a tight budget.

Burlingame relies on Portella’s Storefront Interior and Exterior lines to help transform unremarkable properties into dazzling places of business.

Thermally Broken

Enjoy the latest thermal technology combined with flawless aesthetic design with thermally broken windows by Portella. The result is Burlingame’s cleanest, most energy-efficient steel windows and doors.


With our range of custom metal frame doors and glass doors, you can achieve a unique sense of refinement, professionalism, and peace of mind. Portella’s classic designs integrate large expanses of glass into your design to achieve a look of modernity you won’t find anywhere else.

Portella's Superior Service Guarantee

When it comes time to replace your windows or doors, your personal Portella Project Manager is ready to make your design goals a reality with custom steel door & window designs to meet your needs.

Your project manager will follow up with you at every turn to ensure that your project stays on budget and on time.

Exceptional communication and customer satisfaction are key components of Portella’s mission, and we go above and beyond to make your project a success.


According to ANSI, NFRC, and AAMA specifications, our steel doors and windows are custom-created. We are committed to providing the best residential and commercial steel doors and windows in Burlingame by applying the highest standards in the industry.

Though there is a wide selection of pre-made options to choose from, the Portella team can also provide you with the perfect custom steel doors or windows to fit your needs. Portella’s commercial steel doors and windows come in a variety of styles that are sure to please.

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What Makes Us Different?


Here at Portella, our goal is simple: to provide the finest quality steel windows and doors in Burlingame. Our expert craftsmen know the ins and outs of the trade better than anyone and have proudly provided expertise and artistry to Burlingame residents and businesses for over two decades.

Here’s what makes the Portella difference:

  • Custom steel window and door designs built by dedicated craftsmen
  • 44,000 square feet of state-of-the-art manufacturing space
  • In-house transportation fleet
  • Steel doors and windows are manufactured using a zinc-bonded galvanizing technique method with only 100% recyclable steel that you won’t find anywhere else
  • Exceeding expectations with industry-standard certifications from the ASTM, NFRC, and AAMA

Contact us today to learn what the Portella difference means for your next steel window or door project in Burlingame, CA!

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