The Composite System of a 1- to 3-inch structural cementitious underlayment followed by an epoxy topcoat from Quadex protects and renews deteriorated manholes and larger structures in corrosive environments. Certified applicators apply Portland, calcium aluminate or geopolymer cements to restore structural integrity and permanently stop infiltration and corrosion. In severe corrosion environments, Structure Guard 100 percent solids epoxy is applied to new structures or as a topcoat to cementitious underlayments on rehabilitation projects. Interfit lateral connection seal for lined mains prevents infiltration and root intrusion at the most critical connection and first joint of the lateral. 870/688-7100; www.quadexonline.com.