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The thickness of a thatch roof covering should be at least ___________(a) 5 cm(b) 7 cm(c) 10 cm(d) 15 cmThe question was posed to me in unit test.My question comes from Roof Coverings for Pitched Roofs topic in section Roofing Materials of Construction & Building Materials

Answer»

The correct OPTION is (d) 15 cm

Explanation: The thickness of a thatch roof covering should be at least 15 cm. It CONSISTS of bundles of straw or reeds. GENERALLY, a straw thatch can last for about 20 years and a reed thatch can last for about 60 years.



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