Toronto s green roof bylaw defines a green roof is an extension of an above grade roof built on top of a human made structure that allows vegetation to grow in a growing medium and which is designed constructed and maintained in accordance with the toronto green roof construction standard.
Green roof bylaw city of toronto.
The green roof bylaw sets out a graduated green roof requirement for new development or additions that are greater than 2 000 m in gross floor area.
Every building or building addition constructed after january 30 2010 with a gross floor area of 2 000 square metres or greater shall include a green roof with a coverage of available roof space in accordance with the following chart.
Toronto is the first city in north america to have a bylaw that requires and governs the construction of green roofs on new developments.
The standard can be found in article iv of the green roof bylaw municipal code chapter 492 green roofs.
Toronto municipal code chapter 492 green roofs.
Toronto green roof bylaw.
Whether constructing a green roof voluntarily or as required by the green roof bylaw all green roofs in the city of toronto at a minimum must conform to the toronto green roof construction standard.
The requirement ranges from 20 60 of.