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◆ The science

Thermal paint: what the studies actually say

Reflective coatings work, but they aren't magic. We separate what's proven from the commercial promises.

Quick answer

A reflective paint or coating reduces solar absorption at the surface: a real and highly cost-effective effect. But it doesn't replace insulation: it acts on radiation, not conduction. They're complementary.

Watch out for promises

Phrases like "drops it 10 °C" or "eliminates the heat" have no general backing. The effects depend on the roof, the previous color, orientation and insulation. Serious studies report ranges, not miracles See.

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◆ Sources for this page

Every important claim links to its evidence. Tap to see the source, its context and its limits: DOE Tropical studies Standard. Full bibliography in the evidence library.

◆ Frequently asked questions

What people ask most

Yes, it's one of the most cost-effective measures: it greatly reduces solar absorption. But it doesn't eliminate heat or replace insulation, because it acts on radiation, not conduction.
No. They're complementary: reflective paint lowers absorption at the surface; insulation reduces conduction inward.
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