Toronto Green Roof Standards

The tgrcs establishes the city s requirements while also meeting the ontario building code obc requirements.

Toronto green roof standards.

The toronto green roof construction standard tgrcs is the first municipal standard in north america to establish the minimum requirements for the design and construction of green roofs. Green roof construction standard 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 toronto green standard is toronto s sustainable design requirements for new private and city owned developments. The standard can be found in article iv of the green roof bylaw municipal code chapter 492 green roofs.

Under the green roof bylaw a graduated system from 20 to 60 per cent of available roof space is required on new commercial institutional and residential development and additions with minimum gross floor area of 2 000 square metres. 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. The green roof bylaw sets out a graduated green roof requirement for new development or additions greater than 2 000 m gross floor area as well as governing the construction standards of green roofs. Tier 1 performance measures are required by the city and must be included as part of your approved development application.

Tier 2 3 and 4 higher performance levels are voluntary and are associated with financial incentives. Built to toronto green standards the garage has a number of other features such as solar panels and a metal transpired solar wall to recapture heat through the winter says macdonald. A green roof assembly includes as a minimum a root repellent system a drainage system a filtering layer a growing medium and plants and shall be installed on a waterproof membrane of an.