PVC Environmental Credentials
All materials and products have some impact on our environment regardless of whether they are 'natural' or 'synthetic'. How 'sustainable' a material or product is largely depends on how it is managed and used throughout its life cycle.
In any selection process, products should be assessed based on their merits in terms of fitness for purpose (performance), life cycle cost and life cycle impacts. In many applications, PVC is an ideal choice.
PVC is one of most well researched and tested materials in terms of environmental credentials. At least 60 reputable lifecycle assessments have been conducted on PVC since 1985 with half of these related to building applications. The weight of evidence from these studies confirms that PVC’s environmental credentials are sound compared to alternative materials. Review the section on Life Cycle Assessments for more information about evaluations of PVC.
Environmental credentials of PVC include:
Over 50 per cent of PVC's feedstock is derived from salt, an abundantly available resource. The remaining 43% of feedstock - ethylene - comes from petroleum, which means that PVC consumes proportionately less non-renewable fossil fuels than traditional polymers. Salt is the source of chlorine in PVC
Relatively Low Energy Content
Because more than half its feedstock is derived from salt, PVC is considered to be one of the least energy intensive of all thermoplastics and it contributes to the relatively low embodied energy in PVC products compared to many other products.
PVC is produced in Australia under regulated and environmentally acceptable manufacturing methods and well within international guidelines for PVC manufacturing. The local resin manufacturer and a number of downstream product manufacturers meet the Best Environmental Practice criteria, independently audited, for manufacturing PVC set by the Green Building Council of Australia's Green Star tool.
Emissions are low and the resin manufacturer publicly provides information on its environmental performance through annual community reports and corporate environment reports (see www.av.com.au).
Advances in vinyl formulations have made today’s vinyl products durable, low-maintenance and lightweight, all which translate into reduced use of other materials. For example, high pressure pipes made from oriented PVC (PVC-O) pipes have up to 50 per cent thinner walls while maintaining the same pressure compared to traditional PVC pipes or polyethylene.
Also, through factory and post-industrial recycling, there is little resource wastage during production.
PVC is recyclable and recycling programs for PVC occur in Australia, diverting waste from landfill.Check out the pages on Recycling PVC for more detail.
Vinyl has low thermal conductivity so it can contribute significantly to improving the energy efficiency performance of buildings and reducing greenhouse gas emissions as a result of heating and cooling.
Vinyl products such as flooring, wall coverings and windows require very little maintenance over their lifespan – both an environmental and economical benefit. PVC windows and cladding, for example, do not require painting or varnishing. Abrasion and impact are not likely to damage PVC, reducing repair. The strength, durability and low maintenance of PVC means products need less frequent replacement, less materials for maintenance and may be made using less material than alternatives.
Competitive life cycle cost
Ease of installation of many PVC products compared to alternatives, greater durability and lower maintenance requirements also make PVC competitive on a life cycle cost basis. This was clearly shown in a
Total Cost of Ownership study in 2011 for key PVC application which found PVC a better option over the lifetime of the product than competing materials. For more detail visit www.pvcconstruct.org