Indoor Temperature Reduction
This is one of MEER's most direct field metrics: how much cooler a home becomes once a reflective roof is installed. Reductions of 5–10 °C are common in vulnerable settlements, improving sleep, productivity and health.
Scientific detail
Indoor temperature reduction (ΔT_indoor) is measured against a matched-control baseline using calibrated loggers placed at fixed heights inside intervention and control dwellings. MEER field programs have documented sustained ΔT_indoor of 5–10 °C beneath bamboo–PET roofs relative to tin roofs, correlating with reductions in modeled heat strain and self-reported sleep disruption.
Related terms
Cool Roofs (Reflective Roofs)
Roofs coated or built with high-reflectance materials so buildings absorb far less heat.
Bamboo–PET Composite
A hybrid roofing system combining fast-growing bamboo with reflective PET film.
Heat Stress
The thermal load a human body experiences from its environment.
Thermal Comfort
The condition in which a person is neither too hot nor too cold.