Fig. 2

Plates of asbestos roof (A), Stone-coated tiles roof (B), Cameroun zinc roof (C), corrugated iron roof (D) and long-span aluminium roof (E) are pictures of conventional roof types commonly used in Nigeria.

Plates of asbestos roof (A), Stone-coated tiles roof (B), Cameroun zinc roof (C), corrugated iron roof (D) and long-span aluminium roof (E) are pictures of conventional roof types commonly used in Nigeria.