World Bank · 2024Strong evidence
Climate Knowledge Portal: 24.91 °C mean; +0.23 °C/decade since 1970.
Panama · Official data
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MiAmbiente · 2024Strong evidence
National Adaptation Plan: nighttime minimums rise the most; +2.18 °C by 2070.
Panama · Official projection
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National Energy Secretariat · 2016Strong evidence
Sustainable Construction Guide: 26 °C comfort, roof reflectance ≥70%.
Panama · Standard
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JTIA · 2023Strong evidence
RES v.2 mandatory: roof and wall insulation, solar control.
Panama · Building code
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U.S. Department of Energy · n.d.Strong evidence
Cool roofs: reflective roof >28 °C cooler at the surface; reflects 60-90%.
USA · Institutional
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Zingre et al. · 2015Strong evidence
Reflective coating: surface -14.1 °C, indoor air -2.4 °C.
Singapore · Experimental
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Kolokotroni et al. · 2018Strong evidence
Cool roof: indoor air -2.3 to -5.5 °C; savings of 22-26 kWh/m²/year.
Jamaica / Brazil · Experimental
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PNNL (Building America) · 2012Moderate evidence
Radiant barrier: -8 to -12% cooling in hot climates.
USA · Institutional
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Sharma & Sengar · 2019Indirect evidence
Roof ~50% and walls ~30% of heat gain.
India (hot dry) · Load study
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INEC (2000 Census) · 2001Indirect evidence
~80% of homes with a metal roof (last verified breakdown).
Panama · Census
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INEC (2023 Census) · 2024Strong evidence
1,592,168 homes; 3.3 people per household; 86.3% single-family.
Panama · Census
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Silva et al. · 2025Strong evidence
Glass wool, rock wool and cork, the most favorable thermal-acoustic options.
Review (Energies) · Peer-reviewed
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Rock wool datasheets · 2026Moderate evidence
Hydrophobic, non-combustible (>1100 °C), mold-free (ASTM C1338); keep dry.
Technical · Datasheet
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Lacasse et al. · 2020Moderate evidence
Heat and moisture speed up corrosion and carbonation (up to +45% by 2100).
Buildings 10(3) · Peer-reviewed
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CYPE Ingenieros · 2026Indirect evidence
Roof insulation ~US$13.99/m² installed.
Panama · Price reference
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