Keep your place cooler with a Resene CoolColour™
A black coating that remains cooler even on the sunniest day? Once a contradiction in terms and now a reality, with the launch of Resene CoolColour™ you can specify dark colours that stay cooler than normal colours..
Dark colours on areas such as roofing are suntraps soaking in the sun's rays placing significant relentless stress on the coating and the substrate. All dark colours absorb a lot of light. This in isolation is not an issue however in combination with the light absorption dark colours also absorb heat from the infra red rays of the sun causing significant temperature build up on the surface. White and light coloured paints reflect both light and heat and therefore are not affected. The unique formulation and materials of the Resene CoolColour range allows them to absorb light so they look the same but simultaneously reflect a large proportion of the heat falling on them keeping the surfaces significantly cooler than their standard counterparts. In essence, the colours work by reflecting energy in the near and far infra red region of the spectrum even though they absorb strongly in the visible region. The end result being that a Resene CoolColour will look the same as a standard colour but surface heat will build up slower and to a significantly lower level than a 'not so cool' traditional colour.
In hot summer conditions a Resene CoolColour will help keep the coating, substrate and surface cooler, which can help to minimise heat transference inside. A secondary benefit is that the reduced stress on the coating and substrate will help to increase the expected lifetime of each compared to a standard version of the same colour.
View external test results to see the improvement to Total Solar Reflectance (TSR).
Resene CoolColour technology performs optimally on dark colours that are the most prone to heat build-up, which makes it ideally suited for dark roofing and wall colours. Resene CoolColour technology doesn't promise to resolve all issues related to heat, but will help to reduce the impact of dark colour selection. For more information on Resene CoolColour technology and how you can keep your project cooler see your Resene ColorShop or Representative.
Resene CoolColour technology is available in a wide range of Resene exterior products and colours, including Resene Hi-Glo gloss waterborne, Resene Sonyx 101 semi-gloss waterborne, Resene Lumbersider low sheen waterborne, Resene Summit Roof satin waterborne roof finish, Resene AquaShield mineral flat, Resene X-200 waterproofing membrane, Resene Waterborne Sidewalk paving paint, Resene Waterborne Woodsman penetrating oil stain, Resene SpaceCote Flat waterborne enamel.
See Architects Memo 78 - Cool Eh! for more information.
View the article Coatings for claddings by Colin Gooch, which includes reference to solar reflectance and Resene CoolColour technology.
Examples of Resene CoolColour in use:
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Colours shown on this website are a representation only. Please refer to the actual paint or product sample. Resene colour charts, testpots and samples are available for ordering online. See measurements/conversions for more details on how electronic colour values are achieved.
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