Sprayroq is your source for spray-applied polyurethane products and solutions for Infrastructure Rehabilitation, Corrosion Management, Infiltration Control and Peace of Mind. Over 1 Million SprayWall Installations Since 1990. For more than a quarter-century, Sprayroq has provided structural rehabilitation and corrosion protection for water and wastewater structures worldwide. Our fast-setting, tough, corrosion- and abrasion-resistant linings can be applied at any desired thickness in a single mobilization and provide excellent return on investment and extension of asset performance life.