The Metal - Zinc
An Architectural Rolled Zinc, non-ferrous metal alloy, is self-protecting. Natural zinc forms its own protective layer, called a patina, when it is in contact over time with air (oxygen and carbon dioxide) and water. Zinc is a low maintenance material.
Umicore Building Products offers six zinc surface colors. For more information see the Surface Colors section.
- Natural Zinc by VMZINC has a shiny, almost mirror-like aspect that is mainly used in European countries. When installed on a building or home's exterior, Natural Zinc by VMZINC will weather and form a beautifully textured gray patina. The patina’s evolution can take several years depending on the location of the panels.
- QUARTZ-ZINC® features a factory-induced patina that simulates the natural patina that zinc creates after being exposed to air and water. Umicore’s QUARTZ-ZINC aspect is very similar to the actual color of the natural patina. QUARTZ-ZINC TOC has a thin clear coating that provides some protection against fingerprints.
- ANTHRA-ZINC® is a black pre-weathered surface color. ANTHRA-ZINC should be used with caution near sea shores since the salt in the air will cause the surface aspect of the zinc to lighten over the years. ANTHRA-ZINC will slightly lighten after several years of exposure. ANTHRA-ZINC is not recommended within one mile of the shore.
- PIGMENTO® Red, PIGMENTO® Green, and PIGMENTO® Blue. PIGMENTO'S different colors are formed when mineral pigments are added to the zinc during the factory-induced patina process. PIGMENTO is not a painted finished, color variations are to be expected and no maintenace is required. PIGMENTO still retains the look of zinc but has an added flair of color. The natural grey patina of the material will then progressively appear.
VMZINC coils can be ordered between 1500 lbs. up to 8800 lbs.
- 0.7mm (0.027”, 24 gage equivalent thickness) 1.02 lbs/sf,
- 0.8mm (0.031”, 22 gage equivalent thickness) 1.18 lbs/sf,
- 1.0mm (0.039”, 20 gage equivalent thickness) 1.48 lbs/sf,
- 1.5mm (0.059”, 16 gage equivalent thickness) 2.21 lbs/sf,
- 19.7” (500mm) to 49.2” (1250mm) for Natural Zinc and QUARTZ-ZINC*
- 19.7” (500mm) to 39.4” (1000mm) for PIGMENTO* and ANTHRA-ZINC*
VMZ Zinc Plus Option
PLUS means that a 60 µm (2.36mil) thick coating is on the back side for installation on non-compatible supports. VMZ Zinc Plus is available for all surface colors. Commercial designations are QUARTZ-ZINC in VMZINC Plus, PIGMENTO in VMZINC Plus, ANTHRA-ZINC in VMZINC Plus.
VMZ Zinc Plus resists to an abrasion of 40 liters when tested in accordance with ASTM D 968.
Umicore’s zinc as a building material is actually an alloy. It is 99.995% pure zinc, produced by an electrolytic process, alloyed with traces of copper and titanium added in controlled quantities. These elements reduce brittleness when cold and increase creep resistance.
Zinc will get hot as it is subjected to the sun. The maximum surface temperature of QUARTZ ZINC is 176°F and the maximum surface temperature of ANTHRA ZINC is 190°F. Caution should be used when handling the zinc. Even if the ambient temperature is, for example, 70°F, the zinc can still reach its maximum surface temperature.
VMZINC products sold in North America meet the ASTM B69-11 Standard Specification for Rolled Zinc. A copy of the complete standard may be obtained from ASTM International, www.astm.org.