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par Maxime BOURASSIN le Jul 27, 2025 4:54:37 PM
Of all the thermal optimization solutions available to professionals and private individuals today, few are economical in both financial and energy terms. Fortunately, there are a few methods that can be used to improve a building's thermal performance without sacrificing energy efficiency. Cool roofing, for example, involves applying reflective white paint to the roof of a building. If the building has a flat or flat roof, it's perfectly possible to use this anti-UV paint method, even if the membrane is made of PVC.
What are UV rays?
By definition, U.V. refers to ultraviolet radiation. In other words, electromagnetic radiation. These can be emitted artificially by lasers, but roofs are exposed to UV radiation via the sun.
What is anti-UV paint?
Anti-UV paint, also known as reflective paint, is a white paint that can be applied to building roofs. Thanks to its technical composition, this application reflects the sun's rays back into the atmosphere.
To understand this ability to reflect, we need to understand the concept of albedo. Albedo is the capacity of a material to reflect the sun's rays. With a value between 0 and 1, albedo explains the reaction of components to exposure to heat. For example, tar has a very poor albedo value, as its particularly dark color stores heat. White, on the other hand, has a very high albedo and absorbs far less of the sun's rays.
Covalba's CovaTherm anti-UV coating can reflect up to 94% of UV rays and has a very high SRI. The SRI, or Solar Reflectance Index, measures a coating's ability not to heat up under the sun's rays, but to reflect them back into the atmosphere. Covalba's CovaTherm anti-UV paints have an SRI of 119, the highest value in Europe.
Cool roof application: what is the impact of anti-UV paint?
In France, anti-UV paint has become increasingly popular in recent years. Companies are looking to save energy, and many professionals are turning to planet-friendly solutions for their buildings.
With this in mind, the cool roof is one of the best solutions. The cool roof offers a number of significant advantages. It reduces the surface temperature of the roof by up to half, and significantly reduces the heat inside the building. Covalba cool roofs are also extremely durable, with a lifespan of up to 20 years.
Anti-UV paint for PVC can be applied to both flat and flat roofs. For both, a wide range of different roof coatings are available, including PVC. Applying a cool roof to this plastic material offers two advantages.
Firstly, thanks to the technical properties of the CovaTherm cool roof, it is possible to limit the temperature of the roof covering to a maximum of 40 degrees, compared with 85 degrees under normal circumstances. The second advantage of this solution is its impact on the building's interior temperature. In fact, during heatwaves, temperatures can be reduced by up to 10 degrees.
In mainland France, commercial buildings often have flat roofs or roof terraces. In such cases, anti-UV paint for PVC can help you save on your energy bill, while complying with the requirements of the tertiary sector decree.
Want to find out more about the cool roof and its variations?
On which roofs should anti-UV paint be applied?
Cool roofing may seem like an excellent option, but professionals are entitled to wonder whether they can use it at all. Fortunately, this method can now be used on the vast majority of roof waterproofing solutions.
So it's perfectly possible to turn to anti-UV paint for PVC. With the popularity of PVC membranes on the roofing market, cool roof products have had to adapt. Covalba offers several ranges of solutions for use on PVC roofs.
By extension, other types of membrane are also compatible. A flat roof covered with an EPDM membrane or an SBS bituminous solution can also be coated with a cool roof coating.
On which roofs should UV protection paint be applied?
Cool roofing may seem like an excellent option, but it's fair to ask whether it's actually possible. Fortunately, this method can now be used on the vast majority of roof waterproofing solutions.
So it's perfectly possible to turn to anti-UV paint for PVC. With the popularity of PVC membranes on the roofing market, cool roof products have had to adapt. Covalba offers several ranges of solutions for use on PVC roofs.
By extension, other types of membrane are also compatible. A flat roof covered with an EPDM membrane or an SBS bituminous solution is perfectly suited to the application of a cool roof coating.
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