IECC climate zone 2 on the US map (hot climate)

Climate zone 2 (hot) covers most of Florida, the Gulf Coast, and south Texas. Your required insulation depends on this zone.

A simplified map of the United States with IECC climate zone 2 highlighted. Climate zone 2 is a hot climate covering most of Florida, the Gulf Coast, and south Texas. A legend names every zone from warm zone 1 in the south to cold zone 8 in the north; the colder the zone, the higher the insulation R-value the code requires. The figure lists example cities in zone 2 and the IECC minimum R-values for the attic, walls, and floor. — Source: 2021 IECC Figure R301.1 / Table R301.1

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A simplified map of the United States with IECC climate zone 2 highlighted. Climate zone 2 is a hot climate covering most of Florida, the Gulf Coast, and south Texas. A legend names every zone from warm zone 1 in the south to cold zone 8 in the north; the colder the zone, the higher the insulation R-value the code requires. The figure lists example cities in zone 2 and the IECC minimum R-values for the attic, walls, and floor.

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    <img src="https://remodelcalculators.com/api/figure-embed/iecc-zone-map-z2" alt="A simplified map of the United States with IECC climate zone 2 highlighted. Climate zone 2 is a hot climate covering most of Florida, the Gulf Coast, and south Texas. A legend names every zone from warm zone 1 in the south to cold zone 8 in the north; the colder the zone, the higher the insulation R-value the code requires. The figure lists example cities in zone 2 and the IECC minimum R-values for the attic, walls, and floor." width="800" height="600" style="width:100%;height:auto;border:0" loading="lazy">
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    Diagram: <a href="https://remodelcalculators.com/construction-diagrams/iecc-zone-map-z2" target="_blank" rel="noopener">IECC climate zone 2 on the US map (hot climate)</a> — courtesy of <a href="https://remodelcalculators.com" target="_blank" rel="noopener">RemodelCalculators.com</a>
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