Telangana government announced a one of its
kind “Cool Roof Policy” for buildings, to make them heat
resilient, besides reducing energy consumption.
✓ Telangana became the first state to introduce a cool
roof policy
✓ It was made mandatory for all government, nonresidential and commercial buildings irrespective of
the size of the area they are built in.
✓ It has been kept optional or voluntary for buildings
with a plot area of less than 600 square yards.
✓ Three different types of material could be used for cool
roofs.
✓ In the first type, roofs can be coated with a material
or paint having high reflectivity. These are liquid applied coatings made of simple materials such as
lime wash, an acrylic polymer, or white plastic
coating.
✓ In the second type, prefabricated materials such
as polyvinyl chloride (PVC) membranes or bitumen based sheeting can be used to cover an existing roof
to increase the roof surface’s solar reflectance and
thermal emittance.
✓ The third type of cool roof involves the application
of high albedo, ceramic mosaic tiles, or shingles on
top of an existing roof or to a new roof.