He left Ply Gem in 2008 and returned to its parent company as CEO in 2025. Between those jobs, Gunner Smith learned what happens when the customers you know need more than the factories can make.
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.