Cool roof paints have already proven their efficacy as a sustainable solution against oppressive heat. However, there are many misconceptions about this product in the market. Misinformation abounds and must be addressed.
These misconceptions are primarily due to:
1. Lack of awareness
Low awareness about the product has definitely given rise to many misconceptions, including some that are factually incorrect.
2. Untrustworthy product reviews
These give customers unrealistic expectations about roof paints.
3. Lack of standardisation
Many companies have flooded the market with cheap, low-quality products, thereby tarnishing the entire industry.
Some of the most popular misconceptions are as follows, along with clarifications:
1. It is just an ordinary white paint:
Many users fail to differentiate between technical paints and ordinary white coatings. While it is true that white colour, by its very nature, has the highest albedo (ability to reflect heat), it lacks the special properties of cool roof paints such as adhesivity, thermal emittance, nanoparticles, etc., which aid in long-term cooling. Further, normal white paints are seldom washable, whereas cool roof paints like LuminX are washable and have special hydrophobic properties that provide waterproofing, thereby increasing the lifespan of roofs.
2. It is very expensive:
While the initial application cost can be an obstacle for some users, long-term savings can offset the initial investment. During peak summers, cool roof paints can reduce air-conditioner load by up to 30%. Additionally, it is worth considering the cost of traditional roofing materials, durability, and maintenance costs over time. At LuminX, we strive to reach every household through economies of scale, aiming to defray the initial cost. Our mission is to remove cooling as an elitist concept and make it affordable for all.
3. It does not last long:
In recent years, doubts have been raised about the longevity of these products. This is primarily due to the influx of low-quality products in the market that cannot stand the test of time. In many places, users have complained about product erosion as early as the first monsoon season. Other contributing factors to reduced lifespan include improper roof drainage, which promotes biological growth such as algae and moss, dust accumulation on roof surfaces, mechanical scraping due to human activities, and improper application of the product. At LuminX, we provide warranties on our products and are confident in the superior constituents used in our manufacturing process.
4. Paint advertising the highest SRI value is the best:
This misconception arises due to the proliferation of companies claiming arbitrary Solar Reflective Index (SRI) values without undergoing the requisite testing procedures. Users should always check laboratory-tested reports before making purchase decisions and should not be swayed by advertisements. LuminX provides technical data sheets to users, and all SRI values are derived from rigorous lab tests under expert supervision.
5. The paint will decrease room temperature during winters:
Cool roofs are beneficial all year round. While it is true that they reflect more sunlight and absorb less heat—making them advantageous in summers—they do not necessarily decrease room temperatures during winter months. This is because they rely on reflective properties and have no externally supplied cooling mechanism of their own. In Indian climates, they are suitable for use throughout the year.
6. Cool roofs are maintenance-free:
Like any other paint, cool roofs can degrade over time due to weathering, UV exposure, and dust accumulation. To maintain efficacy, it is advisable to wash painted surfaces periodically using non-abrasive cleaning agents and ensure proper drainage to prevent biological growth. Reapplication may be required to maintain reflective properties.
7. Cool roofs have no environmental benefits beyond energy savings:
Beyond energy savings, cool roofs help reduce the urban heat island effect, lower carbon dioxide emissions from power plants due to reduced electricity consumption, potentially extend roof lifespan, and reduce construction and demolition waste.
8. Cool roofs are beneficial only for new construction:
Cool roofs are equally effective for existing roofs, retrofitted structures, and all types of buildings.
9. Cool roofs only come in light colours:
From an aesthetic perspective, white may not always be appealing. While light colours like white have the highest albedo, cool coatings are available in a wide range of colours. Although these colours may not be as reflective as white, they still outperform traditional dark paints in terms of solar reflectance. LuminX offers a wide range of colour options to choose from.
As an emerging industry, cool roofing is bound to be subject to misconceptions. This post addresses some of the most common ones. The only way to disseminate accurate knowledge about cool roofs is to address misinformation head-on. The industry also requires standardisation, eliminating low-quality products that bring disrepute to the sector.