Frequently Asked Questions about PVC Roofing Systems. Part 3

Q: What makes PVC systems more cost-effective in the long run?

A: Life Cycle Cost analyses have proven that PVC roofing systems are among the least costly over time for two major reasons: long service life and energy efficiency. The longer a roof lasts without major problems, the less costly it is on an annual basis. Energy savings of up to 40 percent every year due to the reflective properties of white PVC roofs can add up to tens of thousands of dollars during a 20- or 30-year life-span. Custom prefabricated PVC roofing systems also contribute to cost-effectiveness because they generate less waste, require less time and labor to install, and reduce the potential for rooftop human error, because up to 85 percent of membrane seaming can be completed in a controlled factory environment.

Q: Environmental groups seem to think that PVC is one of the most hazardous products ever created – dangerous to human health and the environment. How do you answer that?

A: During the last 35 years, there have been literally dozens of scientific studies and more than 26 full-scale LCAs relating to the safety and environmental impact of vinyl production, use and disposal. Study after study by a wide range of scientific, governmental, academic, and industry groups has confirmed that vinyl production in the United States today is very safe, and that finished vinyl products, including PVC roofing membranes, are inert, posing no risk to human health and with very little impact on the environment. In fact, many PVC products – including reflective PVC roofing systems – often make a decidedly positive contribution toward sustainability. According to Dr. Patrick Moore, a co-founder of Greenpeace in 1971 and current chairman and chief scientist of Greenspirit Strategies:

“It’s completely unacceptable for activists to call PVC ‘toxic’ when PVC’s effects on health and the environment have been investigated at every stage from manufacture through use and on to final disposal – in all cases vinyl has been shown to be safe and environmentally sound.”

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