AZEK Building Products president Ralph Bruno resigned effective Friday, May 14, the company announced May 14. He will be pursuing other business interests and will continue to hold a minority stake in the company, a statement from AZEK said.

"Bruno is best known for taking the cellular pvc premium, exterior products category from virtually unknown to the forefront of the building product industry in just eight years," AZEK's announcement said. AZEK is available in more than 2,000 lumberyards.