5 Ancient Cooling Techniques to Beat the Summer Heat

As temperatures soar above 40°C in India, traditional cooling methods can provide relief from the heat. This article explores five ancient techniques, including terracotta roofing, khus screens, chuna coating, bamboo blinds, and aangan design, that have been used for centuries to keep homes cool. These methods not only offer practical solutions but also connect us to our rich cultural heritage. Learn how to implement these techniques in your home to combat the summer heat effectively.

By Narendra Chaudhary Apr 20, 2026, 16:24 IST

Beat the Heat with Traditional Cooling Methods

With the onset of summer, the country is experiencing soaring temperatures, now exceeding 40°C and expected to reach 45°C soon. While venturing outdoors can be unbearable, staying indoors without air conditioning is hardly a solution. As India braces for this year's heatwave, here are five ancient cooling methods worth considering.

Terracotta Roofing

According to a report from Scientific American, terracotta has been integral to Indian culture for over 3,000 years, tracing back to the Indus Valley Civilization. Traditionally used for water storage, terracotta also serves as a cooling agent due to its tiny pores that allow moisture to evaporate, drawing heat away. Modern architecture has adapted this principle, particularly in roofing, by placing terracotta pots upside down and covering them with concrete.

Khus Screens

Khus screens, made from vetiver grass, are hung over windows and doors during extreme heat. When moistened, they cool the hot air that passes through, acting as a natural air conditioner. While they cannot fully replace an AC, rooms with khus screens are noticeably cooler and carry a pleasant fragrance. These screens are particularly effective in dry heat, making them ideal for North India's summer.

Chuna Coating

Chuna, or limewash, is created by mixing limestone with water. This coating reflects sunlight rather than absorbing it, making it a popular choice for home exteriors to minimize heat retention. Additionally, chuna is breathable due to its alkaline properties, allowing for better temperature regulation compared to synthetic paints. Applying chuna can significantly alleviate heat during the summer months.

Bamboo Blinds

Bamboo blinds are an easy and effective way to combat heat. By blocking direct sunlight while allowing airflow, they help keep spaces cooler. A light misting of water on the blinds enhances their cooling effect, similar to khus screens. Unlike heavy curtains that trap heat, bamboo blinds provide a breathable solution, making them an eco-friendly choice for summer.

Aangan Design

This architectural style, prevalent in older Indian homes, features a central courtyard that promotes natural ventilation. The open space allows hot air to rise and escape, keeping surrounding areas cool. When combined with plants and water features, this design creates a continuous cooling effect, making it a timeless solution for heat management.