Toronto Green Roof Standards

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

Toronto green roof standards. Complete in conjunction with the full toronto green standard version 3 0 tgs v3 0 and specifications. 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 of the toronto green standard is a mandatory requirement of the planning approval process. The toronto green standard is toronto s sustainable design requirements for new private and city owned developments.

Tier 1 performance measures are required by the city and must be included as part of your approved development application. 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. Tier 2 3 and 4 higher performance levels are voluntary and are associated with financial incentives. 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.

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. 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. The standard consists of tiers tiers 1 to 4 of performance measures with supporting guidelines that promote sustainable site and building design.