GAF appointed John Altmeyer as executive chairman, GAF Commercial Roofing.  

Altmeyer previously served for 21 years as president of Carlisle Construction Materials, which he grew to be the largest and most profitable of Carlisle’s operating units. 

In this new role, Altmeyer will develop and lead a multi-year strategy focused on making GAF No. 1 in the commercial roofing market.  

“We have great ambitions for GAF’s commercial business, which we’ve long believed has what it takes to be the market leader,” said David Millstone, co-CEO of Standard Industries. “In John, we have found someone who not only shares these ambitions but is also uniquely equipped to realize them as we accelerate our investment across every category of commercial.” 

“With his deep industry experience, along with a proven track record of driving results and transforming businesses, John is singularly positioned to dramatically expand our commercial roofing business," said David Winter, co-CEO of Standard Industries. "Under his leadership, we look forward to becoming the preeminent player in commercial roofing." 

“I am tremendously excited about the opportunity to join the GAF team,” Altmeyer said. “My mandate is to drive GAF to a leadership position in the commercial market. The building blocks for success are here—a strong team, excellent technologies and capabilities, and a commitment to winning. I look forward to working with Jim Schnepper and the GAF team to help realize its full potential in the commercial roofing market.” 

“I have long admired John and am happy to have the opportunity to work with him,” added Jim Schnepper, president of GAF. “His experience and leadership, coupled with the extraordinary talent at GAF, will set us up for tremendous success as we look to grow in this market.”