Lined Sanitary Sewer Systems

Composite FRP Rehab Panels

by Northwest Pipe Company

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Composite FRP Rehab Panels by NWPX Geneva are easy to install and maintenance-free. The panels are ideal for rehabilitating existing large wastewater structures as well as for providing a corrosion-resistant lining to new structures, extending the service life by decades. Our Composite FRP Panels consist of a PP honeycomb core with polyester fleece backing and a thick outer layer of corrosion-resistant FRP. The panels come pre-drilled and ready to be mechanically fastened to the walls of an existing concrete structure. Once the panels are securely mounted, the void between the panels and the walls is filled with high-strength grout to provide additional strength to the system. Seams between the panels and all fastener heads are sealed in a three-step process by qualified applicators providing seamless protection from the corrosive environment of hydrogen sulfide gases.