Case Study: Cornerstone Building Brands achieves 99% PM completion with Limble CMMS

Cornerstone’s secret to preventive maintenance success

Cornerstone Building Brands, the largest manufacturer of exterior building products in North America, was struggling to manage maintenance with spreadsheets and paper-based work orders. The manual process created limited visibility into downtime, inconsistent maintenance practices, communication gaps between teams, and a reactive culture that made it difficult to prioritize preventive maintenance.

To modernize operations, Cornerstone implemented Limble CMMS to centralize maintenance management, automate PM scheduling, improve reporting, and standardize processes across plants. With Limble, the company reached a 99% PM completion rate, shifted to 80% planned vs. reactive maintenance, and cut downtime events by 63%, while also improving accountability, communication, and data-driven decision-making.

Cornerstone Building Brands

Ronnie Woodall

Regional Maintenance & Production Manager