Why Earth Blocks Stay Cooler and Healthier Indoors

One of the biggest complaints homeowners have in The Gambia is how hot and stuffy cement block houses become during the dry season. Fans and air conditioning offer relief, but they are expensive and unreliable during power cuts.

The Science of Heat Retention

Cement blocks have poor thermal mass — they absorb heat quickly and release it slowly, turning homes into ovens by midday. In contrast, Earth Blocks (CIEBs) have high thermal mass, meaning they absorb heat slowly and release it gradually.

Benefits of Earth Blocks Indoors

  • Cooler Temperatures: Rooms built with CIEBs remain up to 4–6°C cooler than cement block rooms during the day.
  • Healthier Air Quality: Earth walls “breathe,” releasing moisture instead of trapping it, which reduces damp and mould.
  • Comfortable Nights: By slowly releasing stored warmth, Earth Blocks help maintain comfortable indoor temperatures at night.

Real-Life Example

A study in West Africa found that families living in earth block homes used fans 30–40% less often than those in cement block houses — a huge saving on electricity bills.

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Tip

If you want a naturally cooler, healthier, and energy-efficient home, Earth Blocks outperform cement in every category.