Tamil Nadu became the first state to issue guidelines for cool roof coating


  • On June 5, 2026—World Environment Day—Tamil Nadu released India's first state-level Standard Operating Procedure (SOP) for the application of cool roof coatings.
  • This document was prepared with the aim of promoting passive cooling measures to lower temperatures in homes, schools, and public buildings.
  • Amidst the challenges of rising heat and climate change, this initiative is considered a significant step towards enhancing energy efficiency and improving comfort for citizens.
  • Cool roof coating is a specialized surface layer characterized by high solar reflectance and high thermal emittance properties.
  • It reflects solar heat striking the roof and reduces the amount of heat absorbed by the building.
  • The new SOP outlines a 12-step implementation process for cool roof projects.
  • It covers aspects such as feasibility assessment, material procurement, application methods, quality control, and routine maintenance.
  • The document recommends the use of coatings with a Solar Reflective Index (SRI) of 102.
  • This standard ensures that the materials used are capable of reflecting the maximum amount of solar heat.

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Tamil Nadu became the first state to issue guidelines for cool roof coating

On June 5, 2026—World Environment Day—Tamil Nadu released India's first state-level Standard Operating Procedure (SOP) for the applicati...

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