FAQ’s

Q: Are there different grades of zinc?

A: Yes. For zinc cladding of any type (roof, wall and gutter), it is imperative to specify architectural grade zinc; not just “zinc”. The main difference between ‘zinc’ and architectural grade zinc is performance. Not all zinc is the same hence it will not perform the same. Not using an architectural grade zinc can lead to cracking and underperformance. To learn more about architectural grade zinc, download the ASTM B69-13 documentation.

Q: Is zinc safe for the environment?

A:  YES!

Q: Are there LEED points available for using Zinc?

A: Yes; please click here for the RHEINZINK LEED.

What are some advantages of Zinc?

A: It is:

  • Non-staining with clear run-off; unlike some metals that stain adjacent surfaces.
  • Non-toxic.
  • Malleable and can be installed on even the most complex geometries.
  • Long-lasting.
  • Complementary to modern and traditional architecture.

Q: How long does a Zinc facade last?

A: A facade made from zinc can have a life expectancy of 200-300 years.

Q: How long can I expect my Zinc roof to last?

A: A roof made from zinc can have a life expectancy of 80-100 years.
To learn more about a roof that needed only partial zinc re-roof after 120 years, read about the partial re-roof of St. Catherine’s ChurchReutlingen, Germany.

Q: How long will a Zinc gutter system last?

A: A zinc gutter system has a life expectancy of 30 years. RHEINZINK Gutters.

Q: How does RHEINZINK last so long?

A: Zinc protects; it’s corrosion resistant and is often used to galvanize other materials – extending their service life.

Q: Does Zinc form a patina over time?

A: Yes. Over time, the surface will form a patina when exposed to continuous wetting and drying cycles. For more information on the patination process, check “Weathering Characteristics” of RHEINZINK

Q: How is Zinc maintained?

A: RHEINZINK is low to no-maintenance; when scratched or scuffed it will heal itself after periods of wetting and drying cycles. The fact that RHEINZINK has two different alloys (blue-grey and graphite-grey) becomes very important in the case of a scratch since the surface color will re-patinate back to its original state.

Q: Why is RHEINZINK an environmentally sustainable Material?

1: Recyclability

  • RHEINZINK is infinitely recyclable and recycles 100% of its scrap.

The recycling rate of building construction zinc (European data) is estimated at 96%. Recycling RHEINZINK requires an energy expenditure of approximately 5% of the primary energy content. Pre-consumer recycled content is estimated at 30%. Post-consumer recycled rate ranges from 10%-30%.

2: Green Manufacturing Process

  • Deep Mined vs. Strip Mined
  • Emissions during smelting and processing are kept to a minimum through state-of-the-art production equipment

Q: How large are our Resources of Zinc and in what Sectors is Zinc still used as a Material?

A: The data today indicates that our resources of zinc will be sufficient to cover our requirements for at least the next 700 years, without even taking the availability of scrap metal into consideration. Zinc is used in many sectors: from the production of car tires and paint, bathroom fittings and hardware for doors to toys and cosmetics. We come across this trace element on a daily basis – whether in shampoo when showering in the morning or in the form of medical products (e.g. zinc ointment).

Q: In what other areas is Zinc used as a Material?

A: Zinc is used to manufacture car tires, valves and fittings for bathrooms, toys and cosmetic products. Zinc is present throughout the natural environment; in the earth, air and water. Zinc is essential to all life, a fundamental part of the metabolic processes of plants, animals and humans.

Q: What Foods contain Zinc?

A: As an essential trace element, zinc can be found in a wide range of food. A kilo of beef, for example contains 25-50 mg zinc, and a kilo of oats 70-140 mg. Humans need an average of 10-15 mg zinc per day to remain healthy, e.g. for growth, wound healing, to produce enzymes, etc. Pregnant women and nursing mothers are advised to make sure they get up 25 mg of zinc per day. To learn more about the health benefits of zinc, visit the International Zinc Association.

Q: As a Heavy Metal, why is Zinc is still safe?

A: Although zinc is categorized as a heavy metal due to its specific weight of over 5 g/cm³, it is entirely non-toxic. Forming a natural part of our environment, zinc is the second-most important trace element after iron – a basic part of life. Unlike mercury or cadmium, zinc is not stored by the body, for example when consumed in food. The amount of zinc not required by the metabolism is excreted naturally.