insulation
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Brian Chambers and the house that focus built
He learned Owens Corning from the shingles up. Now Brian Chambers is reshaping the Toledo manufacturer around roofing, insulation, and doors - and testing how much a company can gain by narrowing its ambitions.
Sami Rahman
Sami Rahman is the CEO of CleanFiber, the Buffalo-based maker of high-performance cellulose insulation spun from recycled corrugated cardboard. A chemical and environmental engineer turned building-materials operator with 20+ years across James Hardie and ICP Group, he joined CleanFiber in January 2025 as President and General Manager and was elevated to CEO after sharpening its sales and operations. He is steering a company that ranked #1 in manufacturing on the 2024 Inc. 5000 list through a Series C raise and the ramp of a plant built to ship over three million bags a year.