What if ₹850 could cool your home better than an AC bill worth thousands? As India faces scorching 44°C temperatures, a man's low-cost roof-cooling trick is grabbing attention online. Using a simple lime (chuna)-based reflective coating, he claims his rooftop stayed around 28-30°C, helping keep his home cooler and reducing dependence on ACs and coolers. The science is simple: reflective roof coatings bounce back sunlight, reduce heat absorption, and lower indoor temperatures. With heatwaves becoming more intense, many are calling this one of the smartest and most affordable summer hacks for Indian homes. Would you try this on your rooftop?