In the desert, where cooling is a priority, thick earthen walls do an excellent job of maintaining a pleasant
17.2: Lime whitewashed walls reflect the sun!s intensity in sunny climates.
interior temperature. The key word here is thick. Exterior temperatures penetrate an earthen wall to a depth of 12 inches (30 cm) before the momentum of the external temperature is dissipated. When simply relying on mass alone to moderate internal temperatures, consider using the wider 18-20-inch (45-50 cm) 100-lb. bags, or two rows of 12-inch (30 cm) tubes side-by-side, etc.
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