ARKEMA Painting roofs white is a common practice to remedy the absorption of solar radiation for areas with strong sunlight. But conventional paints rarely resist beyond 5 years: they lose their 'reflectivity' with the appearance of dirt and micro-fungi and the intensity of UV rays damage them, making them porous. From an environmental point of view, repeatedly re-coating a damaged surface negates the benefits of reflectivity.
The transparent protective coating based on Kynar Aquatec® resin helps keep the whiteness of the coating intact for over 20 years with very little maintenance. This topcoat acts like a varnish: rainwater slides off and naturally washes away any dirt that would stick to a traditional white paint. Roof instrumentation repainted in white and protected by a topcoat based on Kynar Aquatec® have shown that the overall energy cost linked to the air conditioning of the building protected can be reduced by 15% to 30%(1) for 20 years.
(1) Given its reflectivity, the Cool Roof resin based on Kynar Aquatec® saves 20 to 25kWh / m2 / year on the energy required for air conditioning, the energy cost of a building being around 150 kWh / m2 / year.
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Arkema SA published this content on 17 December 2020 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 17 December 2020 14:06:02 UTC
