


Employees at CertainTeed Corporation rank Mark Rayfield in the Bottom 45% of CEOs in Wilmington, DE. Comparatively, employees at GAF rank James Schnepper in the Top 10% of CEOs in New York. Employees rate their CEO differently based on the frequency of interaction, ability to affect company culture, and drive measurable results.

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Women at GAF rated their CEO an A+

Diverse Employees at CertainTeed Corporation rated their CEO a B-

Diverse Employees at GAF rated their CEO an A+


At CertainTeed Corporation, employees in the Operations department rate Mark Rayfield the highest. According to employees, Mark Rayfield's ability to drive business results is Good. At GAF, the Marketing department's employees rate their CEO highest. And, 100% of GAF's employees approve of their CEO's management style.