Assessing the Effects of Cool Roofs on Indoor Environments and Health

Recruiting now · Not applicable

Conditions studied: Resting Heart Rate, Blood Glucose Control, Depression, Heat-related Symptoms, Physician Diagnosed Heat-related Illnesses, Food Insecurity, Diet Quality, Health-related Quality of Life, Indoor Thermal Comfort, Coping Ability, Life Satisfaction, Healthcare Provider Utilization, Hospitalization, Systolic Blood Pressure, Diastolic Blood Pressure, Inner Ear Canal Temperature, Dehydration, Sleep Quality, Cognition, Productivity, Aggression, Indoor Air Temperature, Indoor Relative Humidity, Indoor Heat Index, Household Energy Expenditure

In brief

Ambient air temperatures in Asian, Latin American, African, and Pacific climate hotspots have broken record highs in 2024, driven by man-made climate change. Solutions are needed to reduce heat exposure in communities. Sunlight-reflecting cool roof coatings passively reduce indoor temperatures and energy use to protect home occupants from extreme heat. Occupants living in poor housing conditions globally - for example in informal settlements, slums, and low-socioeconomic households - are especially vulnerable to increased indoor heat exposure. 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 five urban climate hotspots: Ouagadougou, Burkina Faso; Colima, Mexico; Ahmedabad, India; Niue; and Tavua, Fiji.

Key facts

Study ID

NCT06579950

Run by

Aditi Bunker

People needed

3200

Starts

2024-09-04

Expected to finish

2027-09-30

Last updated by the study team

2026-02-27

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: accepted.

You may qualify if…

• Permanent household resident.

You may not qualify if…

• Roof damage, inaccessible or instability of roof adversely affecting cool roof coating application.
• Participant unable to provide written/verbal informed consent.

Where it is running

• Fiji National University — Suva, Fiji (enrolling)
• 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

Full record on ClinicalTrials.gov

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