We manufacture premium-quality insulation, commercial roofing and fibers and nonwovens for commercial, industrial and residential applications.

In her role at Johns Manville, Erin Valley is focused on bringing people together—building relationships across teams and inspiring collaboration that drives innovation, progress, and a shared belief that sustainability is everyone’s responsibility.

At Johns Manville, we rigorously test our products to understand how they perform acoustically and how they contribute to a more sustainable built environment.

In our hail testing lab, JM engineers simulate the real-world impact of hailstones striking a roof. By replicating these conditions, we can measure how different systems perform and continuously improve our products for strength and resilience.

Nestor will lead JM’s global engineering organization. He will be responsible for all aspects of Capital and Furnace Engineering and driving excellence and standardization across the engineering discipline.

We’re proud to share that our Etowah, TN, plant has been honored for its outstanding performance in industrial wastewater pretreatment.