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Premier Steel Windows in San Antonio

Finding the right windows is about striking a balance between what looks good and what satisfies your practical needs. Portella’s custom windows are designed to offer both form and function, with clear steel sightlines and carefully engineered craftsmanship that supports energy efficiency, durability, and flexibility. Since we manufacture and design all of our custom steel windows for clients in San Antonio and other locations, we’re able to match your project specifications without sacrificing any of the aesthetic or functional qualities of the window.

We also product metal windows with 100% durable, recyclable steel. The durability makes it ideal for withstanding any environment or project, and using a recyclable material helps us maintain our dedication to sustainability. Our custom steel windows offer a luxury, high-end look and exceed all industry standards for renovation projects or new builds in San Antonio.

San Antonio Custom Windows Details

At Portella, we strive to manufacture custom steel windows that will last a lifetime. Every product we sell goes through a rigorous cycle of development and testing, all to support a continuously growing line of high quality metal windows and doors. We start with the basics of durability and energy efficiency, including and testing qualities like NFRC-rating and options for thermally broken, laser fusion welded, and cold-rolled frames. Thanks to such stringent requirements and testing, we’re able to offer windows that help maintain a comfortable environment free of temperature fluctuations of energy loss. Then we custom fit those frames to match the specifications and aesthetic interests of any project that calls for well crafted, stylish steel windows.
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Technical Specifications

We take pride in producing windows that feature the highest technical specifications and building standards available. Thanks to our personal manufacturing facilities, we’re able to design and create custom steel windows that fit your project to perfection. Here are some of the ratings and specifications you can expect from Portella windows:

NFRC-rated meeting new 2020 energy code requirements and Title 24

Double glazed (single and triple available for some models)

Glass: Cardinal 366 over clear tempered

Available in standard and custom paint options

Carbon steel, stainless steel and bronze options

True divided lite construction

Hinges: Adjustable steel post in barrel with ball bearing

Continuous steel mounting flanges with orientation options

How to Order

Each Portella system is individually crafted to meet each custom project requirements. Simply, provide rough opening dimensions, details (ie: interior/exterior, type of system, elevation, specialty notes, etc.), project location, and our team will handle the rest — with efficient service and attentive communication, your PM will remain with you from start to finish.
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Why You Should Choose Portella For Your Custom Windows in San Antonio

At Portella, our goal is to make sure our products and service stand out from the crowd. Here’s how we do it:

Quality – Our state-of-the-art manufacturing facilities and expert design specialists ensure every project is a stunning success.

Price – We keep prices for our custom steel doors and windows low by keeping every stage of the process in-house to avoid additional markups.

Superior climate durability – Reduce your energy bills with custom windows that are designed especially for the climate of your specific location.

Custom-fit – We create custom windows and frames that are suitable for virtually any commercial storefront application.

Energy efficiency – Our windows are NFRC-rated and exceed all energy efficiency requirements.

Warranty – We stand by our work. Our warranties are among the best in the industry.

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Contact Us Today to Get Your Project Moving.

Doors and windows crafted from our profiles are often the most prominent feature in prestigious luxury homes, historic renovations and boutique commercial spaces.

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