Cool roofs could beat the heat and boost health in the pacific
NCT ID NCT06570993
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This completed study tested whether painting metal roofs with a special heat-reflecting coating can lower indoor temperatures and improve health in Niue, a Pacific island nation facing record heat. Researchers enrolled 288 adults living in single-story homes with metal roofs. They measured heart rate, blood sugar, depression, and other health outcomes over time. The goal is to find a simple, passive way to protect communities from heat-related illness.
What this could mean
Our plain-language read of the trial. This is informational only — not medical advice or a prediction.
- Active substance
- Cool roof coating (heat-reflecting material applied to existing metal roofs)
- What this could lead to
- If effective, cool roofs could become a low-cost way to protect people in hot climates from heat-related health problems like high heart rate, poor blood sugar control, and depression.
- What could go wrong
- This is a single completed trial in one small island nation (Niue) with 288 participants. Results may not apply to other regions or larger populations. The intervention only addresses indoor heat, not other causes of these health issues.
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
Contacts and locations
Locations
-
University of Auckland
Auckland, Niue
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