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INSULATE FOR CLIMATE AND COST CONTROL

With increasing pressure on South Africa's electricity supply driving up costs, smart homeowners are looking for opportunities to keep their property warm in winter and cool in summer without heaters or air conditioners. The answer to this challenge lies in effective insulation, says Willem Grové Marketing Manager at Coverland, which substantially increases the energy efficiency of a building.

"By controlling the climate of the home with an effective insulation solution, the necessity to heat or cool using electricity is greatly reduced," he notes. "Simply put, that means saving money by using less electricity and thereby doing your bit to preserve the environment."

RadenShield™ Scientific Layering System by Coverland is a super reflective silver aluminium barrier that creates a shield against the sun's harsh radiant heat rays. The Agrément certified product range can be used in both galvanised sheet steel cladding and concrete roof tile structures for residential, commercial and industrial use. In addition all RadenShield™ products act as a barrier against dust invasion and water ingression

Coverland RadenShield™ is manufactured from non-woven polypropylene spunbond membrane that is laminated to highly reflective aluminium sheets resulting in a product with high-performing insulating properties. The aluminium foil has two interesting physical properties; it is a good heat reflector and a bad heat radiator. The membrane is UV resistant; non-toxic along with being flame retardant ensuring it complies with SANS 428 Fire Protocal.

There are three different types of heat transfer, namely conduction (transfer of heat within materials or between materials in contact), convection (transfer of heat by motion) and thermal radiation (transfer of heat by electro-magnetic waves). Thermal radiation is responsible for between 90% and 93% of radiant heat that is transferred in a downward flow from the roof, and up to 80% of the heat transfer through side walls of the building. In order to be classed as a radiant barrier, the RadenShield™ reflects between 95% and 97% of all radiant energy. This results in an emissivity value of between 0.05 and 0.03.

"Using RadenShield™ will result in a cooler home or work environment in summer and will act as a barrier to retain warmth in winter." Continuing, Grové says a building with RadenShield™ installed prevents heat from entering through the roof in summer, keeping the house up to 10°C cooler. "With RadenShield™ one third less heat energy enters the roof," he confirms. It also retains heat during winter, which can save up to R2 500 per annum.*

The RadenShield™ Scientific Layering System is easy to install as it is sturdy enough not to flap around in the wind yet flexible enough for quick and easy spanning. The unique bonding process prevents delamination and tearing ensuring a long lasting firm radiant barrier that doesn't deteriorate under tough conditions.

Available in three different variants, Grové says RadenShield™ Single-Sided and Double Sided designed for residential homes and commercial buildings constructed with pitched roofs. Radenshield™ Industrial is similar to the double sided product, but slightly thicker with a re-enforcing scrim for added strength making it the ideal solution for factories and warehouses.

"RadenShield™ ClimaGuard, a DIY solution can be retrofitted to pitched roofs; this allows the homeowner to easily fit an insulation barrier to the existing roof structure. The result is an opportunity to reduce electricity accounts while benefiting from a comfortable home all-year round."

Coverland products are available nationwide.

*(Scientifically tested by the Monier Technical Centre Germany. based on a 90m² house at a regulated temperature of 22°C).

For more information contact 011 222 7300 or visit www.coverland.co.za.
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