It is an object of the present invention to provide a process for retrofitting existing
school bus seats which comprise the steps of removing existing plywood from the existing bus seat frame, spraying a mold with an elastomer spray, inserting a piece of wood into the mold, and then injecting the mold with the urethane foam which bonds to the wood and integrally forms an elastomeric skin thereon, and then finally by inserting the wood with the elastomer skinned urethane foam adhered thereto into engagement with the bus seat frame.