Question 2 of 11

Where do we find naturally occurring zinc?

... Zinc is found in the Earth's crust and is obtained through underground mining.

Question 3 of 11

Why is zinc sheeting mixed with copper and titanium?

... Zinc sheeting is mixed with copper and titanium to increase its malleability and tensile strength -- the weight it can support.

Question 4 of 11

How common an element is zinc?

... Zinc is the 27th most common naturally occurring element and is used in batteries, galvanized steel and brass.

Question 5 of 11

Approximately how long can a zinc rooftop last?

... A zinc rooftop can last more than a century, while a rooftop made from asphalt shingles lasts for about 25 years.

Question 6 of 11

What is zinc hydroxyl-carbonate?

... One of the reasons zinc sheeting has such a long life is because it forms a protective layer called zinc hydroxyl-carbonate when it is exposed to the elements.

Question 7 of 11

What does the human body use zinc for?

... The human body uses zinc for cell production, vision and fertility. Zinc supplements can also boost the immune system.

Question 8 of 11

How recyclable is zinc?

... Zinc is nearly 100 percent recyclable and requires less than 20 percent of the original energy input for recycling.

Question 9 of 11

What is a downside of using zinc in building construction?

... Zinc sheeting costs much more than regular bricks and cement. The upside is that it is more economical in the long run, because it does not need to be replaced.

Question 10 of 11

If zinc is mined from the ground, just as copper and aluminum are, why is it more eco-friendly?

... Zinc mining needs a quarter of the energy required for aluminum mining and half the energy required for copper mining.

Question 11 of 11

How many tons of asphalt shingles end up in landfills yearly?

... Every year, more than 10 million tons (nine million metric tons) of asphalt shingles end up in landfills. These shingles do not break down, but leech toxic chemicals into the soil.

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