Jack Wills of Pasadena California brought in Roberts and formed Wills and Roberts Manufacturing Company (WiRo or WilRo) in 1942 to make plastic housings for Aerojet and fiberglass droppable boats using one of the first polyester resins — Lamitex —and Owens-Corning Fiberglas.
In 1942, Jack Wills of Pasadena, California, joined forces with Roberts to form Wills and Roberts Manufacturing Company (WiRo or WilRo). This company specialized in creating plastic housings for Aerojet and fiberglass droppable boats using a pioneering polyester resin called Lamitex and Owens-Corning Fiberglas.