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Soon, govt to repaint buildings

delhi Updated: Jan 20, 2011 00:25 IST
HT Correspondent
HT Correspondent
Hindustan Times
government buildings

You will soon find government buildings in Delhi being repainted and renovated to make them cooler during the summers.

Delhi Government has decided to introduce 'cool roofs' in its buildings that house its own offices, hospitals and schools. Senior Delhi government officials said as a pilot project, roofs of some of the government buildings would be painted in a light shades like white or lime coloured or covered in light colour glazed tiles.

Officials said it helps in conserving energy and enhance thermal comfort, as the interior of a building is subject to less thermal flux. The concept, said the official, is called 'cool roofs'.

"The government will encourage cool roofs in the city as they have the ability to

reflect and reject heat because the roofs are prepared with materials which have properties of both high solar reflectance and emittance," Delhi chief minister Sheila Dikshit said after a presentation on 'cool roofs'.

Officials said awareness would be created on cool roofs through manuals, which will be distributed through residential welfare associations.

"Research has shown that cool roofs also help increase the life expectancy of roofing systems because extreme cycles of heating and cooling tend to wear out materials as they expand and contract with the temperatures," a senior Delhi government official said.

"Cool roofs keep the roof at a more constant temperature and therefore, tend to last longer."

Cool roofs also reduce both the energy use and energy demand of a building, an official said. A presentation on 'Cool Roofs for Cool Delhi' was given to the CM and senior officials.