Why are hollow bricks used for outer walls in hot regions?

Last updated at May 22, 2026 by

Q 7
Question

Why are hollow bricks used to construct the outer walls of houses in hot regions?

๐Ÿ”— Concept: 7.1 Conduction of Heat

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Hollow bricks trap air — air is a poor conductor → house stays cool

Explanation

  • Hollow bricks have air-filled cavities inside.
  • Air is a poor conductor of heat (insulator).
  • In summer: outside heat cannot enter → house stays cool.
  • In winter: inside warmth cannot escape → house stays warm.
Hollow bricks trap air (poor conductor); this insulation prevents heat from entering in summer and escaping in winter.
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