By 1967, Team 4 had split up, but Rogers continued to collaborate with Su Rogers, along with John Young and Laurie Abbott. In early 1968 he was commissioned to design a house and studio for Humphrey Spender near Maldon, Essex, a glass cube framed with I-beams. He continued to develop his ideas of prefabrication and structural simplicity to design a Wimbledon house for his parents. This was based on ideas from his conceptual Zip-Up House, such as the use of standardized components based on refrigerator panels to make energy-efficient buildings.