Assessing the Effects of Cool Roofs on Indoor Environments and Health
NCT ID: NCT06579950
Last Updated: 2024-12-10
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
NA
3200 participants
INTERVENTIONAL
2024-09-04
2026-01-31
Brief Summary
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Heat exposure can instigate and worsen numerous physical, mental and social health conditions. The worst adverse health effects are being experienced in communities least able to adapt to heat exposure. By reducing indoor temperatures, cool roof use can promote physical, mental and social wellbeing in occupants.
The long-term research goal is to identify viable passive housing adaptation technologies with proven health and environmental benefits to reduce the burden of heat stress in communities affected by heat globally. To meet this goal, the investigators will conduct a cluster-randomized controlled trial to establish the effects of cool roof use on health, indoor environment and economic outcomes in four urban climate hotspots: Ouagadougou, Burkina Faso; Hermosillo, Mexico; Ahmedabad, India; and Niue, Oceania.
Detailed Description
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Sunlight-reflecting cool roof coatings passively reduce indoor temperatures and lower energy use, offering protection to home occupants from extreme heat. The investigators aim to conduct a global multi-centre cluster-randomized controlled trial investigating the effects of cool-roof use on health, environmental and economic outcomes in four urban climate hotspots - Ouagadougou, Burkina Faso (sub-Saharan Africa), Ahmedabad, India (Asia), Niue (Oceania), and Hermosillo, Mexico (Latin America). The sites represent hotspots where people experience a triple burden from heat exposure, chronic health issues and vulnerable housing conditions (slums, informal settlements and low socioeconomic housing). They also exhibit diversity in climate profiles, housing typology, level of socioeconomic development, population density and rates of urbanisation.
The trial will quantify whether cool roofs are an effective passive home cooling intervention with beneficial health effects for vulnerable populations in four locations. Findings will inform global policy responses on scaling cool roof implementation to protect people from increasing heat exposure driven by climate change.
Conditions
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Keywords
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Study Design
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RANDOMIZED
PARALLEL
PREVENTION
DOUBLE
Study Groups
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Cool roof
Households will receive sunlight reflecting 'cool roof' coating on their roofs.
Cool roof
Cool roofs are a sunlight reflecting roof coating that can reduce indoor temperature. Cool roofs have high solar reflectance (reflecting the ultraviolet and visible wavelengths of sunlight, reducing heat transfer to the surface of a roof) and high thermal emittance (radiating absorbed solar energy).
No cool roof
No cool roof application. Households will keep their original roofing for the duration of the trial.
No interventions assigned to this group
Interventions
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Cool roof
Cool roofs are a sunlight reflecting roof coating that can reduce indoor temperature. Cool roofs have high solar reflectance (reflecting the ultraviolet and visible wavelengths of sunlight, reducing heat transfer to the surface of a roof) and high thermal emittance (radiating absorbed solar energy).
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
* Participant unable to provide written/verbal informed consent.
18 Years
ALL
Yes
Sponsors
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Sika Services AG
UNKNOWN
SOPREMA
UNKNOWN
Engineered Polymer Solutions (EPS B.V.)
UNKNOWN
Resene
INDUSTRY
Pacific Community
OTHER
Habitat for Humanity
OTHER
The Tindall Foundation
OTHER
Rutgers University
OTHER
Boston University
OTHER
London School of Hygiene and Tropical Medicine
OTHER
Heidelberg University
OTHER
Instituto Tecnológico de Hermosillo
UNKNOWN
University of Ouagadougou, Burkina Faso
OTHER
Indian Institute of Public Health, India
OTHER
Aditi Bunker
OTHER
Responsible Party
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Aditi Bunker
Co-Principal Investigator
Principal Investigators
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Collin Tukuitonga, Sir. Dr.
Role: PRINCIPAL_INVESTIGATOR
University of Auckland, New Zealand
Locations
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University Joseph Ki-Zerbo
Ouagadougou, , Burkina Faso
Indian Institute of Public Health Gandhinagar
Ahmedabad, Gandhinagar, India
Instituto Tecnológico de Hermosillo
Hermosillo, Sanora, Mexico
Niue
Alofi, , Niue
Countries
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Central Contacts
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Facility Contacts
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Abdramane Soura
Role: primary
Anish Sinha
Role: primary
Jose Antonio Hoyo Montano
Role: primary
Noah Bunkley
Role: primary
Other Identifiers
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226745/Z/22/Z
Identifier Type: OTHER_GRANT
Identifier Source: secondary_id
3728162
Identifier Type: -
Identifier Source: org_study_id