Custom Steel Doors & Windows San Antonio

Unique windows and doors that your space deserves

Whether you are an experienced architect or are new to the world of interior design, the quality of Portella doors and windows is obvious. Every product we offer will be customized to fit your needs, but the quality of our products will never fluctuate.

Choosing Portella windows and doors will allow you to not only complete your project, but transform your space to mirror the warmth and openness of San Antonio.


Custom Steel Doors

Custom Steel Windows

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Portella Product Lines

When you work with Portella, your design options are limitless. Whether you are looking for entry doors for a residence, steel windows, commercial glass, or even window and door hardware, our products are unique and can be handcrafted to satisfy your needs.

All of our custom windows and doors feature narrow sight lines, exceptional strength, and project-specific sizing thanks to our patented thermally broken profiles. Explore our options to see how Portella’s library of options can enhance your design.

Portella Announces The Contemporary 3-D Metal Door

Portella Announces The Contemporary 3-D Metal Door

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Quality Performance

Portella is proud of its products, but not just because they’re beautiful. Our steel and metal windows and doors are also dependable!

When you choose Portella products, you are choosing high quality craftsmanship and certified product development. Our doors and windows are not only third-party tested, but they also have ASTM, NFRC, AAMA, and Florida Building Code certifications. This allows us to ship and provide steel doors and windows for a variety of climates, weather conditions, and stringent building code requirements.

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Thermal Challenges are a thing of the past

Luxury residences, boutique commercial storefronts, and historical projects deserve renovation solutions that are as unique as the property. Our Artisan series of steel doors and windows, storefront glass doors, and custom interior doors offer benefits that are both aesthetically pleasing and innovative.

If you’ve been searching for steel window and door options, but are worried about the product being unable to withstand the San Antonio heat, look no further.

Our Artisan Series is not simply a variation of the non-thermally broken European extrusion products or “enhanced” thermally broken profiles. Portella’s Artisan specialty doors utilize a GRP (Glass Reinforced Polyetherimide), which is a non-conducting material with steel, that combines strength and superior thermal performance. This science translates to your cool air staying cool, and your warm air staying warm.

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The Portella Difference

Architectural vision is all in the details. Portella can transform your vision into an elegant reality. Our team of professionals, and our custom doors and windows, make that possible.

  • One point communication with knowledgeable Portella Project Managers maximizes your understanding of our tested and engineered designs.
  • Patented, narrow-profile sightlines accentuate the open-air feel of San Antonio style.
  • Factory installed glass, with Low-E options, maximizes your space’s energy efficiency, especially during central-Texas summers.
  • Metal stops or traditional wet glaze, with interior or exterior glazing options to eliminate moisture penetration
  • Clear and concise communication, from getting a quote through installation, ensures your results are what you’ve been dreaming of.
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Blog & News

How to Figure Out the Architecture Style of a Home

At its core, architecture is the design and construction of all homes, buildings, and structures. Within general architecture, there are hundreds (or possibly thousands) of types and subtypes of architectural styles that vary greatly based on many factors, including the geographic location, era of construction, available materials, technology, and design taste of the time. If […]

How to Update the Exterior of a Ranch-Style Home

Ranch-style homes exploded in popularity in the 1940s and stayed popular through the 1970s in the United States. In fact, during the 1970s, over 60 percent of new homes built in the United States were ranch-style homes.  Eventually, the popularity of ranch-style homes was overtaken by the larger custom homes of the 1980s, but many […]