LLR Partners, a private equity firm, has invested in Allmark Door, a provider of repair services for industrial doors.

The investment enables Allmark to expand its capabilities and strengthen its position in the door maintenance services.

“We are thrilled to partner with the LLR team,” said Andrew Markham, general manager of Allmark Door. “The firm’s partnership-driven approach and experience helping businesses like ours grow come at an important time, as we look to invest in our technical resources, expand into new geographies and strengthen our competitive advantage.”