Overview
- A video shared this week on X shows a man named Ritesh standing barefoot on a rooftop during 44°C weather and saying a lime‑based coating reduced the surface temperature to about 28–30°C.
- Reporters reproduced his recipe and steps, saying he used 20 kg lump lime (chuna), 5 kg Fevicol DDL binder and 500 g Universal Repair Polymer mixed after soaking the lime overnight, and he estimated the cost at roughly Rs 800–850 for a 1,000 sq ft roof.
- Ritesh and many online commenters say the treatment cuts heat absorption so much that homes need less use of coolers or air conditioners and that even a fan feels cooler indoors.
- Scientists and users cited in the coverage connect the result to established cool‑roof science, noting white or lime reflective coatings commonly lower roof surface temperatures by about 10–20°C and can reduce indoor heat by several degrees.
- The articles note there has been no independent lab testing or long‑term durability data reported yet, so real energy savings, adhesion, waterproofing performance and safety remain unverified before wider adoption.