Waterproofing and Building Envelope Investment is Second Corporate Carve-out Completed by OpenGate in May of 2019 LOS ANGELES & PARIS, May 22, 2019-- OpenGate Capital, a global private equity firm, announced today that it has acquired SMAC, a global manufacturer of waterproofing and building envelope solutions, from Colas Group (EPA : RE). Financial terms were not disclosed. SMAC operates across two divisions: Travaux and Industrie. SMAC Travaux specializes in waterproofing solutions typically utilized on flat roofs structures and facades. SMAC Industrie manufactures bituminous membranes, skylights and resins.