Green Roof Mandate

The original ordinance s mandate of either a green roof or a green roof solar combination with solar panels on the roof has now been changed to either a green roof or green space on the ground or on terraces a financial contribution for off site greenery a green roof solar combination renewable energy anywhere on the site community solar or energy efficiency.

Green roof mandate. Roof ceiling construction requirements are listed in california residential code chapter 8. City to mandate solar and living roofs on most new construction. And this july the so called ecoroof requirement went into effect in portland. Green roof legislation is being passed around the world.

California s recently approved solar roof mandate for all new homes came as a surprise to many people even though stakeholders have been working on the rule change for roughly two years. These requirements cover the design and construction of roof ceiling systems including roof framing roof drainage roof sheathing ceiling finishes roof ventilation and attic access. Cordoba became the first city in argentina to require green roofs in july. Sponsored by council member rafael espinal this requires the inclusion of a sustainable roofing zone defined as an area of a roof where a green roof solar photovoltaic system or a combination thereof is installed in new construction and for buildings undergoing certain major renovations such as the replacement of an entire existing roof deck or assembly.

Effective january 1 st 2017 san francisco became the first u s. For this compliance option the ordinance requires an amount of green space related to either the gross floor area total roof area or available roof area. There are two types of green roof. Intensive roofs which are thicker with a minimum depth of 12 8 cm 5 1 16 in and can support a wider variety of plants but are heavier and require more maintenance and extensive roofs which are shallow ranging in depth from 2 cm 13 16 in to 12 7 cm 5 in lighter than intensive green roofs and require minimal maintenance.

The green roofs are intended to help reduce denver s urban heat island effect which is the third worst in the nation. France s new legislation mandates at least partial coverage of. Under a mandate adopted by the california energy commission new.