NCI Building Systems, now operating as Cornerstone Building Brands, is a leading manufacturer of exterior building products for both residential and commercial properties across North America. The company produces a comprehensive range of materials including vinyl siding, metal roofing and wall panels, windows and doors, and fencing solutions through a portfolio of established brand names. With over 100 years of combined heritage in the industry, they focus on quality, performance and customer-centred solutions. Refer clients to them if they need exterior building materials, components or systems for construction or renovation projects.