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SIKA SARNAFIL - How The Added Benefits Of Sarnafil Reflective & Living ‘Cool’ Roofs Can Help Beat Summer Aircon Costs & UHIE

With rising average summer temperatures, many commercial buildings will not only rely on costly and carbon-heavy air-conditioning to keep office space cool, but also exacerbate the problem by contributing to urban heat levels and air pollution.

That’s because constructions with dark-coloured roofs absorb rather than reflect the heat from the sun, raising a building’s internal temperature. The cumulative effect of heat gains in cities and built-up areas – aka, the urban heat island effect (UHIE) – is increased thermal discomfort, reduced air quality and increased risk of smog.

The answer is ‘cool roofs’, a familiar concept in the Mediterranean and California, which leading roofing solutions specialist Sarnafil is now pioneering in the UK. Having evolved from centuries-old white-washed exteriors into sophisticated solar and green roof systems, today’s cool roofs are proven to lower internal building temperatures and cut aircon bills, while also combating UHIE.

With the UK climate getting hotter, and businesses and building owners under increasing pressure to improve the environmental performance of their premises, the cooling properties of Sarnafil’s White Solar Reflective membrane or green roofing options provide additional benefits for those already considering a solar or living roof as part of a refurbishment or new build project.

Sarnafil’s specially manufactured White SR membrane boasts the highest CIGS solar reflectance factor on the market of 95 percent, meaning roofs fitted with this product have unrivalled cooling effects. Coupled with a Solyndra solar roofing system, which is capable of harvesting 360 degrees of sunlight, thanks to its cylindrical solar modules, such a roof could also generate power and income for the building.

Marrying its market-leading single ply membrane with biodiverse, extensive or intensive green roof options, Sarnafil’s SarnaVert green roofs are an increasingly popular choice among clients searching for sustainable solutions. Living roofs can reduce aircon costs through the shading effects of plant cover, and the cooling effect of transpiration and evaporation from plants and substrate surfaces. Indeed, internal temperatures have been shown to be three to four degrees centigrade lower under a green roof when outdoor temperatures are between 25 and 30 degrees.

Commenting on Sarnafil’s cool roofs offering, head of technical, Phil Jarratt says: “Our country’s climate is changing, with summer temperatures set to soar in the coming years. So a cool roof is a prudent investment for the future, whether for a new-build or refurbishment project – especially when coupled with the latest solar or green roof technology. Though a cooling roof may not be top of a client’s wish list at present, it’s a terrific plus-point to our sustainable roofing options.”

For further information on Sarnafil’s cool roofs please email below:

E-mail Sika Sarnafil


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Hill Farm Business Park, Linton Hill, Maidstone, Kent ME17 4AL
Tel : 01622 745333

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