keyboard_arrow_upProfiled polycarbonate for cooler roofs
keyboard_arrow_downProfiled polycarbonate for cooler roofs

The energy-efficiency regulations for buildings, which came into effect in November last year, have steered the South African building industry in a more eco-friendly direction. One issue that has been raised in this context is the urban heat island (UHI) effect, which occurs as a result of a concentration of buildings, hot surfaces and waste heat from human activity that creates a warmer envelope of air over urbanised areas. This not only taxes the air-conditioning systems in buildings, but also increases pollution levels significantly.  Christo Pienaar, marketing director of Modek, a company which specialises in glass reinforced polyester (GRP) and polycarbonate roof sheeting, says that cool roofing is a real solution to the problem. “Cool roofing is one of the simplest and most cost-effective solutions to diminish the UHI effect and it supports energy efficiency in buildings.”

keyboard_arrow_upCool roofs combat urban heat islands
keyboard_arrow_downCool roofs combat urban heat islands

The term ‘urban heat island’ (UHI) refers to a phenomenon that occurs in urban areas where temperatures are often significantly higher than in surrounding peri-urban or rural areas. According to BlueScope Steel, a leading multinational supplier of coated steel roofing materials, two of the most effective ways of cooling urban heat islands are to make use of urban forestry and cool roofs.