Who We Are

Cornerstone Building Brands is the largest manufacturer of exterior building products in North America, servicing commercial, residential and repair and remodel markets. We’re the #1 manufacturer of vinyl siding, windows and metal accessories as well as North America’s top choice in metal roofing, and wall systems.

With an expansive product offering and more than 100 locations, we’re uniquely positioned to enhance the value we provide to our partners and customers. We’re committed to providing high-quality exterior building solutions that our customers and communities can count on.

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What we do


For more than 75 years, we have created building products that have led the residential new construction and repair & remodel industries and continue to lead through innovation. Our comprehensive selection of products includes nearly everything on the outside of a home: from windows, doors and siding to designer accents, stone veneer, roofing, and fence and railing.


For more than 100 years, our commercial brands have designed, manufactured and delivered a comprehensive range of products for the commercial construction industry—from metal coatings to components to engineered building systems.

Our Purpose

Our building solutions are the cornerstone of the communities we serve. We believe every building we create, and every part of that building, positively contributes to communities where people live, work and play.

Our Mission

We are relentlessly committed to our customers and to creating great building solutions that enable communities to grow and thrive. By focusing on operational excellence every day, creating a platform for future growth and investing in market-leading residential and commercial building brands, we deliver unparalleled financial results.

Our Core Values


Safety is an essential part of our culture. We approach each day with careful attention to the well-being of every individual. From the moment we leave home to the time we return, we take personal responsibility for our safety and the safety of those around us.


We challenge the status quo and proactively seek opportunities for continuous improvement and transformative breakthroughs. We develop products and solutions to meet our customers’ evolving needs and improve communities through our commitment to environmental sustainability.


We are honest and accountable in our actions with one another and with all our stakeholders, and we strive to build trust at every opportunity. Our commitment to doing what’s right underscores everything we do each day.


We work side by side to create an environment of collaboration and mutual respect. Our backgrounds are as varied as our talents, and we stand together as one winning team whose diversity reflects the communities we serve.