Rio de Janeiro, Brazil
City population: 6748000
Duration: 2014 – ongoing
Implementation status: Ongoing
Scale: Micro-scale: District/neighbourhood level
Project area: unknown
Type of area: Residential
Last updated: April 2022

The project focuses on encouraging residents of Rio de Janerio's Arará favela to install green roofs on their homes, primarily to reduce the urban heat island effect but also to harness the broader social, environmental, and economic benefits which green roofs can provide, "...from providing thermal protection and improving air quality to mitigating stormwater runoff pollution and saving costs for both residents and cities" (Refs. 2 & 3). The individual behind the project, Luis Cassiano Silva, further hopes that introduction of green roofs into the favela which help to improve residents’ quality of life and "describes the emotional benefits of incorporating green space into the favela landscape" (Ref. 2).

Rooftop Teto Verde Favela
https://rioonwatch.org/?p=44424

Overview

Nature-based solution

  • Nature on buildings (external)
  • Green roofs

Key challenges

  • Climate action for adaptation, resilience and mitigation (SDG 13)
  • Climate change adaptation
  • Environmental quality
  • Air quality improvement
  • Green space, habitats and biodiversity (SDG 15)
  • Green space creation and/or management
  • Water management (SDG 6)
  • Stormwater and rainfall management and storage
  • Social justice, cohesion and equity (SDG 10)
  • Environmental education

Focus

Creation of new green areas, Knowledge creation and awareness raising

Project objectives

The objective of the intervention "is simple: to transform an urban heat island through a refreshing and soothing “green canopy”—in effect, making the area a more pleasant place to live. To this end, the initiative works to educate residents about green roofs and their capacity to reduce temperatures" (Ref. 2).

Implementation activities

The project focuses on "guid[ing] residents in the process of creating green roofs—from acquiring materials to building the roof. In addition, one of the initiative’s main activities is educating children in the community about the importance of respecting plants, and more broadly, the environment" (Ref. 2). Cassiano, the individual behind the project, describes how “Most children in the favela have no interaction with the forest and do not respect it… It’s a culture of destruction. We must educate them, slowly,” (Ref. 2).

Climate-focused activities

Climate change adaptation:

  • Increase or improve urban vegetation cover to help reduce outdoor temperature
  • Create or improve outdoor spaces to help people escape from urban heat
  • Implement green walls or roofs to lower indoor temperature and provide insulation
  • Increase the use of climate-resilient plant species (resistant to drought, fire, and pests)

Main beneficiaries

  • Citizens or community groups

Governance

Management set-up

  • Led by non-government actors

Type of initiating organisation

  • Citizens or community group

Participatory approaches/ community involvement

  • Unknown

Details on the roles of the organisations involved in the project

The project was started by Luis Cassiano Silva, a resident of Parque Arará for twenty-five years and has worked in various fields—theatre, cinema, music, and show production (Ref. 2). Cassiano "describes himself as a ”cultural activist”, and devotes his free time to the project (Ref. 2). Cassiano further "sought out the technical support of Bruno Resende, whose thesis examined the construction of green roofs in Brazil", and together, they developed and researched the project, experimenting with various techniques and vegetation adapted to Brazil’s tropical climate (Ref. 2).

Project implemented in response to ...

... an EU policy or strategy? No
... a national policy or strategy? No
... a local policy or strategy? No

Financing

Total cost

Unknown

Source(s) of funding

  • Unknown

Type of funding

  • Unknown

Non-financial contribution

Unknown

Impacts and Monitoring

Environmental impacts

  • Climate change
  • Lowered local temperature
  • Environmental quality
  • Improved air quality
  • Water management and blue areas
  • Improved stormwater management
  • Green space and habitat
  • Increased green space area
  • Increased number of species present

Economic impacts

  • Other

Socio-cultural impacts

  • Safety
  • Decreased crime rates
  • Social justice and cohesion
  • Improved social cohesion
  • Improved liveability
  • Improved access to urban green space
  • Health and wellbeing
  • Improved physical health
  • Improved mental health
  • Cultural heritage and sense of place
  • Improvement in people’s connection to nature
  • Increased appreciation for natural spaces
  • Education
  • Increased knowledge of locals about local nature

Type of reported impacts

Expected impacts, Achieved impacts

Presence of formal monitoring system

Unknown

Presence of indicators used in reporting

No evidence in public records

Presence of monitoring/ evaluation reports

No evidence in public records

Availability of a web-based monitoring tool

No evidence in public records

References

Cassiano's Rooftop
https://www.thenationalnews.com/lifestyle/travel/how-rio-s-favela-residents-are-greening-their-homes-in-pictures-1.970232
Rooftop Teto Verde Favela
https://rioonwatch.org/?p=44424
Construction sample
https://rioonwatch.org/?p=44424
Rooftop Teto Verde Favela
https://rioonwatch.org/?p=44424
Rooftop Teto Verde Favela
https://oppla.eu/casestudy/23397
Information about this nature-based solution was collected as part of the UNA global extension project funded by the British Academy.