Design features • Sandwiched construction of vault • The vaulted roof is of locally-made clay fuses over the concrete slab, which provides a non-conducting layer. The top finish of China mosaic glazed tiles further adds to the insulation. Being white and glossy it reflects sun while being made from clay it retards the heat transmission. • Vaulted roof form • The roof form creates an efficient surface/volume ratio optimizing material quantities. The higher space volume thus created provides for hot air pockets due to convective currents that keep lower volumes relatively cool. • The ventilating window at upper volume releases the accumulated hot air through pressure differences.