“Flying Form” Construction

By the 1960s, Greenwin had developed a new innovative system for high-rise building called the “flying form.” The process involved hoisting preassembled forms (moulds) up one level at a time until the concrete was poured and settled. Once the concrete had settled, the form was removed and raised to the next level to repeat the process, greatly reducing the time for construction.

The flying form technique revolutionized the high-rise construction industry and enabled Greenwin to build over 10,000 residential units across Toronto throughout the 60s and 70s.