As scorching summer temperatures continue to grip large parts of India, many households are struggling to keep their homes comfortable without seeing electricity bills skyrocket. While air conditioners remain the most popular solution, a viral video circulating on social media has introduced a surprisingly inexpensive alternative that is attracting widespread attention.

The video features a man who claims to have developed a simple rooftop cooling technique costing less than ₹800. According to him, the method can significantly reduce the amount of heat entering a house, making indoor spaces much more comfortable even when outdoor temperatures climb beyond 45 degrees Celsius.

The budget-friendly cooling hack has sparked discussions among homeowners looking for practical ways to beat the summer heat without investing heavily in expensive cooling appliances.

A Low-Cost Approach to Summer Cooling

The viral demonstration focuses on reducing heat absorption at the source—the rooftop. Since roofs are directly exposed to intense sunlight throughout the day, they often become one of the biggest contributors to rising indoor temperatures.

Instead of purchasing an air conditioner that can cost anywhere between ₹20,000 and ₹30,000, the man suggests applying a reflective coating to the roof. The objective is simple: prevent excessive heat from entering the building by reflecting a larger portion of sunlight away from the surface.

According to the video, the entire process requires only a few easily available materials and can be completed without specialized equipment.

Materials Used for the Cooling Layer

The homemade roof treatment relies on three commonly available products:

• Fixit URP waterproofing solution
• White lime powder (chuna)
• Fevicol adhesive binder

The creator of the method explains that these ingredients work together to create a bright, reflective surface capable of reducing heat absorption during peak summer months. The estimated cost of the mixture reportedly remains below ₹800, making it accessible for many households.

How the Roof Treatment Is Applied

The process begins by preparing a liquid mixture. White lime powder is first mixed thoroughly with water until a smooth consistency is achieved. A measured quantity of waterproofing solution and adhesive is then added to improve durability and surface bonding.

Once the mixture is ready, the roof is cleaned carefully to remove dust, dirt, and debris. A clean surface helps the coating adhere more effectively and ensures longer-lasting performance.

After preparation, the solution is spread evenly across the rooftop using brushes or rollers. Multiple coats can be applied for improved coverage and effectiveness. The treated surface is then left to dry naturally under sunlight.

Why White Roofs Stay Cooler

The science behind the technique is relatively straightforward. Dark surfaces tend to absorb a larger percentage of solar radiation, causing them to heat up quickly. In contrast, lighter-colored surfaces reflect a significant portion of sunlight, helping them remain cooler.

This principle is already used in many parts of the world through reflective roof paints, cool-roof technologies, and whitewashed buildings. By reducing heat absorption, homeowners may experience lower indoor temperatures and less dependence on cooling appliances.

Social Media Users React to the Viral Claim

The statement that attracted the most attention from viewers was the claim that this inexpensive solution could potentially lower temperatures dramatically while eliminating the need for costly air-conditioning systems.

Many users praised the idea for its affordability and simplicity. Supporters highlighted several potential advantages:

• Minimal upfront investment
• Reduced electricity consumption
• Easy application process
• Suitable for regions experiencing severe heatwaves

At the same time, some users expressed caution, noting that results could vary depending on factors such as roof material, local climate, building design, and application quality.

Growing Interest in Alternative Cooling Methods

As temperatures continue to rise across India, homeowners are increasingly exploring innovative ways to stay cool while managing energy costs. Reflective roof coatings are just one of several techniques gaining popularity.

Other commonly used heat-reduction strategies include bamboo shading systems, heat-reflective sheets, improved ventilation, rooftop gardens, and water-based cooling methods. These solutions are often viewed as complementary measures that can improve comfort and reduce overall cooling expenses.

Can It Completely Replace an Air Conditioner?

While reflective roof treatments may help lower indoor temperatures, experts generally agree that they should be considered a supplementary cooling measure rather than a direct replacement for air conditioning in extreme weather conditions.

However, by reducing heat penetration through the roof, such methods can make living spaces more comfortable and potentially decrease the workload on cooling appliances. This can contribute to lower energy consumption and reduced electricity bills over time.

For households seeking affordable ways to tackle the summer heat, the viral ₹800 rooftop cooling formula has emerged as an intriguing option, demonstrating how simple materials and basic science can sometimes offer practical solutions to everyday challenges.