GAF Announces Commercial Sales Leadership Transition

Dan Karins and Alma Garnett

North American roofing and waterproofing manufacturer GAF has appointed Dan Karins as its new Head of Commercial Sales.

Dan takes over from Alma Garnett who will step back from her day-to-day responsibilities at the end of 2026 and transition into a long-term strategic advisory role.

In his new role, Dan will oversee the full spectrum of the Commercial Sales business.

Leadership Transition

Dan and Alma have worked in close alignment over the last several years to grow the GAF Commercial business by strengthening customer relationships, expanding its portfolio, and building a sustainable foundation for the future.

“Alma’s impact on GAF and the broader roofing industry cannot be overstated. She joined us with a reputation for excellence that has been instrumental in growing our Commercial business,” said John Barkhouse, CEO and President of GAF.

“Over Dan’s 20-plus years at GAF, he has earned the deep respect of our customers through his tenacity and proven ability to advance our Commercial business. His leadership will be vital as we continue to build on the organization’s strong momentum.”

Dan Karins commented, “Alma has been a great mentor and phenomenal partner in building a world-class foundation for GAF Commercial.

“I am eager to lead our team as we continue to set the standard for excellence and ensure GAF remains the most trusted partner in the commercial roofing industry.”

Alma Garnett joined GAF in 2021. The company says she will remain actively involved throughout the remainder of 2026 to support the handover of responsibilities.

“It has been a privilege to lead such a talented team and to work alongside our customers to advance the roofing industry,” said Alma. “I am incredibly proud of what we have built. Having worked closely with Dan for years, I have seen first hand his dedication to our partners and his vision for the business. GAF Commercial is in the best possible hands as I transition into this next chapter.”

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