Ambient air temperatures in Africa, have broken record highs in 2024. Solutions are needed to build heat resilience in communities and adapt to increasing heat from climate change. Sunlight-reflecting cool roof coatings may passively reduce indoor temperatures and energy use to protect home occupants from extreme heat. Occupants living in poor housing conditions- for example in informal settlements, slums, and low-socioeconomic households - are susceptible to increased heat exposure.
Heat exposure can instigate and worsen numerous physical, mental and social health conditions. The worst adverse health effects are experienced in communities that are least able to adapt to heat exposure. By reducing indoor temperatures, cool roof application may improve heart health, sleep and physical activity in household occupants.
The long-term research goal is to identify viable passive housing adaptation technologies with proven health benefits to reduce the burden of heat stress in communities affected by heat. To meet this goal, the investigators will use smartwatches to measure the effects cool roof application on heart health, sleep and physical activity in Ouagadougou, Burkina Faso.
• Permanent household resident
• Roof damage, inaccessible or instability of roof adversely affecting cool roof coating application.
Participant unable to provide written/verbal informed consent. Participants will be excluded if they are not willing or able to wear a smartwatch.
One participant per household.
Parallel
Cool roof
Other interventionCool 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
Heart rate
Heart rate in beats per minute measured at 15-second intervals using Garmin Vivosmart 5 devices. Measurements will be taken continuously for 12 months. Participants will be asked to wear their smartwatch for at least two weeks every month.
All-day steps
The number of steps measured daily using Garmin Vivosmart 5 devices.
Distance walked
The total distance walked daily using Garmin Vivosmart 5 devices
Active minutes
The total number of minutes of active exercise daily using Garmin Vivosmart 5 devices.
Moderate-intensity activity minutes
The total number of minutes of moderate-intensity activity daily using Garmin Vivosmart 5 devices.
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Institut Supérieur des Sciences de la Population
Lead sponsor
University of Auckland, New Zealand
Collaborator
Heidelberg University
Collaborator
London School of Hygiene and Tropical Medicine
Collaborator
Rutgers University
Collaborator
Boston University
Collaborator
Secretaría de Educación Pública, México
Collaborator
University of Ouagadougou, Burkina Faso
Collaborator
Indian Institute of Public Health, India
Collaborator
The Tindall Foundation
Collaborator
Habitat for Humanity
Collaborator
Pacific Community
Collaborator
Labfront
Collaborator
Cognifit
Collaborator
Resene
Collaborator
SOPREMA
Collaborator
EPS
Collaborator
Sika
Collaborator
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