Concrete roofs offer wide-ranging benefits

New advances in concrete and waterproofing technology now make it possible to use the world’s oldest building material for spectacular, unprecedented designs and a variety of applications that promote sustainability.

Concrete tiling, for example, is an exceptionally durable roofing system where the tiles can be moulded into a variety of shapes and finished with various textures and colours. Allied to this is the employment of shingles, which can be produced to mimic traditional roofing materials such as slate or clay.

The other conventional approach is the employment of cast-in-situ techniques for flat or low-sloped roofs to create seamless and monolithic surfaces, as well as the use of precast concrete panels.

Weathering the elements

Once constructed, the major benefit of www.cemcon-sa.org.za concrete roof systems is their ability to withstand harsh weather conditions and remain intact for many years without needing repairs or replacements.

“In fact, a building envelope can be designed to accommodate a variety of functions over its lifespan. For example, a flat concrete roof design could allow for further storeys to be added later as the need arises, or funds become available, to further optimise the use of well-located land and existing services,” explains Bryan Perrie, CEO of Cement & Concrete SA (CCSA).

Perrie says the incorporation of roof gardens is now also increasingly common, helping to offset the carbon footprint by reclaiming potentially lost green spaces.

Insulation and fire resistance

“If properly designed and detailed, concrete roofs can also significantly improve thermal insulation inside a building. This can be particularly beneficial in areas with extreme temperatures, where air-conditioning and heating costs are high,” Perrie continues.

“Furthermore, concrete is a noncombustible material with excellent fire resistance. A concrete roof can prevent fires from spreading to other parts of a building and help protect the structure from damage,” he concludes.

Sika’s commitment to supporting local communities recently led it to partner with charity, Ironman 4 the Kidz, to help build a swimming pool for the Khayalethu Child and Youth Centre in Gqeberha, Eastern Cape.

At Khayalethu, children between 6 and 21 are given a safe and nurturing home, with physical, emotional and intellectual support. Many of them have previously