best steel windows houston tx

Our Product Lines

Custom steel windows and doors from Portella feature Narrow sight lines, exceptional strength, and unique sizing not to mention virtually limitless design options. Our stunning windows and doors complement both contemporary building designs and historical replications. Our products are engineered to withstand the most extreme conditions and our thermal steel series carries NFRC ratings. With four product lines to choose from our products are suitable for any design application.

Factory-installed glass, quality of workmanship, superior customer service, direct business model, and overseeing every detail of your installation makes us unique among our competitors. Portella has earned a reputation that is as strong as our steel construction.

The Ronson Home - front view

Thermally Broken

Our high-performing thermal steel products are ideal for more extreme climates.

The Ronson Home - front view


The slender lines of our Classic Series appear to lose weight, emphasizing the transparency of the façade.

Storefront Exterior

Our Storefront Series was designed for boutique commercial projects with restricted budgets.

Storefront Interior

Our Storefront Interior windows and doors create transformative interior office spaces.