African Design Magazine February 2015 | Page 25

News pipes, PVC windows and doors or vinyl flooring, the whole life cycle impact of a product is the key consideration. SAVA members focus on the “cradle to grave” approach in their Life Cycle Assessments, taking into account the sustainable sourcing of raw materials, best practice manufacturing processes, the sustainable use of additives, and ultimately the disposal of the product at the end of its life. The better their product performs throughout all these various stages of its life, the better its overall environmental profile and the more likely it is to be specified in these eco-conscious times. PVC is a thermoplastic made of 57% chlorine (derived from industrial grade salt) and 43% carbon (derived predominantly from oil / gas via ethylene). It is less dependent than other polymers on crude oil or natural gas, which are nonrenewable, and hence can be regarded as a natural resource saving plastic. PVC has a versatility that helps it meet the various needs of modern architecture. In addition to new projects, PVC is also widely used in refurbishment where it often replaces traditional materials such as metals and wood. PVC has received some criticism in the past, but fortunately, and to a large degree as a direct result of the work SAVA and global partners are doing behind the scenes, much has changed in the worldwide PVC industry over the past 10 years.. In Europe, Australi