In the tradition of excellence
Montpellier University - France Residential building - France
Architect: R. Dottelonde Architect: Georges Maurios
School - Hyères - France
Private house - Saint-Gilles - La Réunion Brenau Performing Arts Center, Gainsville University - USA
Architect: Cabinet N. Grouard Architect: Lord Aeck Sargent Architecture
A UMICORE BRAND
A natural material
Esplanade - Singapore
Architect: DP Architects PTE Ltd.
A long-lasting material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 4
Natural warm grey colour . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 6
A top-performing alloy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 8
A four stage production process . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 10
An environment-friendly material . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 11
A UMICORE BRAND
A long-lasting material
There are many reasons for choosing VM ZINC for your roofing and facade projects.
Zinc is naturally resistant to corrosion, is extremely durable and does not require costly
maintenance. Indeed, zinc roofs in Europe give up to a hundred years of loyal service before
needing renovation. In addition, the flexibility, malleability and versatility of zinc, combined
with its pleasing aspect, make it the material of choice for imaginative building projects from
individual homes to commercial complexes, public buildings and private projects.
Natural resistance How the patina is formed
The light grey patina takes between six
One of the many advantages of zinc is months and two years to form, depending
its natural resistance to corrosion. on the climate, the exposure of the site and
This is the result of a process that occurs the composition of the atmosphere. The patina
when the shiny surface of newly rolled is made up of two parts:
zinc comes into contact with the main - A first, very compact layer consisting
components of the atmosphere (oxygen, of very dense basic zinc carbonate
carbon dioxide and water). During this crystals is formed and adheres to the zinc.
process a layer, which is commonly called This first layer protects the zinc completely
Social activities hall - Bobigny - France a patina, is formed on the surface of the and slows down its interaction with the
Architect: D. Bouffel
metal. Once it has formed, the patina slows oxygen in the air.
down the interaction between the zinc and - A second, less uniform layer, made up
the oxygen in the atmosphere to maintain of zinc oxide or hydroxide, which is less
a very low rate of zinc corrosion. adhesive and more porous, is also formed.
Although it plays a less important role, it is
still useful as its neutralises the effect of the
acidity of rain or other external factors on
In a marine environment, along a coastal
strip of several kilometres in width,
the composition of the patina is different.
It is relatively compact and insoluble and
consists of zinc oxychloride, but plays
the same protective role.
Zinc will outlive us all Low maintenance
Zinc is an exceptionally durable material. In addition to its long life span, zinc is a
Although the original zinc is consumed over low maintenance material. It does not have
time through the formation and reformation a coating or varnish that wears out over
of patina, zinc has an extremely long life time and needs to be reapplied. In fact,
span compared to other materials. With an zinc continues to develop a protective layer
average corrosion rate of 1 µm/year, even (patina) throughout its life and will self-repair
very thin (0.7 mm) rolled zinc can achieve imperfections or scratches.
life spans of 70 to 100 years depending
on the environment.
Zinc and steel:
VM ZINC provides the freedom to create
a perfect marriage
architectural masterpieces which are difficult
to realise with other construction materials.
Because of its resistance to corrosion,
It is very malleable and can therefore meet
zinc is fundamental in protecting ferrous
virtually every architectural demand and
metals from corrosion.
provide solutions that less flexible materials
Hot galvanising or electrogalvanising
cannot. Architects appreciate this versatility
uses electrolysis to deposit a layer of
which allows them great freedom of expression
zinc on ferrous metal parts such as car
in designing the roof and cladding of a
and truck chassis and bodies, bridge
building. Zinc resolves a large number of
parapets and crash barriers and other
design issues and allows interesting treatments
oxidable metals exposed to the vagaries
of different climates. This layer of zinc of corners and angles, creating an almost
protects them from weather. Ships’ hulls, infinite variety of shapes: straight, curved,
metal roof frames and metal constructions convex or concave.
are also protected from corrosion by the
zinc contained in many types of paint.
Fullerton Square main building - Singapore
Fullerton Square main building - Singapore
A UMICORE BRAND
Natural warm grey colour
Easy marriage Natural VM ZINC
with other materials
When the zinc leaves the rolling mill it has
a shiny, metallic surface aspect which changes
Whether it is used in renovation or new over time as a natural, semi-mat, light grey
construction, traditional or avant-garde patina is formed.
designs, zinc is an elegant partner for many
building envelope materials, blending with The natural light grey zinc has a textured,
wood, glass, stone and other materials luminous quality that evokes the world of
in complete harmony. minerals. It enhances the appearance of
the building from the very first day and
In order to ensure that the envelope of your for years to come.
building or renovation project meets your
specifications, VM ZINC offers a variety Bilacquered VM ZINC
of finishes ranging from natural zinc to
pre-weathered zinc and lacquered zinc.
Bilacquered VM ZINC is produced from
natural rolled zinc covered on both sides
with a layer of 20 µm polyester lacquer
and a 5 µm primer continuously applied
then polymerised at a high temperature
in a furnace.
It is produced in three complementary pairs
of standard colours (stone white-tile brown;
copper green-macao brown; slate grey-sky
blue) and offers complementary aesthetic
solutions for urban or rural environments.
Scratches on bilacquered VM ZINC
do not cause scaling, and, if the zinc
is exposed, it repairs itself by forming
its natural patina.
University - Montpellier - France
Architect: R. Dottelonde
American University - Mougins - France
Bungalow - Singapore
Architect: Aamer Taher Design Studio
Pre-weathered VM ZINC
Pre-weathered QUARTZ-ZINC and QUARTZ-ZINC has an appearance, from
ANTHRA-ZINC offer two different surface the start, similar to that of the natural patina
aspects. These are obtained by immersing normally obtained after several years of
natural VM ZINC in a solution which modifies exposure to the atmosphere.
the crystalline structure of the surface of the
metal at a thickness of approximately one A dark grey zinc, ANTHRA-ZINC is often
micron. This treatment by phosphatization used in combination with slate because its
is a durable chemical conversion of the charcoal aspect compliments it. A material
surface structure of the metal. of choice for the discerning architect.
Hotel in Sao Paolo - Brazil
Architect: Ruy Ohtake Arquitetura & Urbanismo
A UMICORE BRAND
A top-performing alloy
VM ZINC is rolled zinc alloyed with copper
and titanium to produce a material with
optimum mechanical and physical
characteristics for building applications,
particularly with regard to the material’s
mechanical resistance and creep resistance.
VM ZINC is composed of very high quality
zinc Z1 (99,995% pure zinc), as defined by
the EN 1179 standard, to which titanium
and copper are added:
• titanium: min. 0.06% - max. 0.20%
• copper: min. 0.08% - max. 1.00%
Copper increases the mechanical resistance
of the alloy, making it harder and stronger.
Titanium increases creep resistance permitting The PREMIUMZINC
greater thermal expansion and contraction quality label
of the material without causing metal fatigue.
The European Standard EN 988 has been
applied since 1997 in 18 European
countries. This standard imposes very
stringent specifications for the composition
of rolled zinc and its physical, mechanical
and dimensional characteristics, which
make it an international reference.
Whilst the VM ZINC brand complies with
all the specifications of the EN 988 standard,
we have gone beyond the requirements of
this standard to create the PREMIUMZINC
quality label. This certification offers an
even higher level of quality than EN 988
certification. The PREMIUMZINC label
actually demands stricter specifications for
some measurements, particularly flatness,
chemical composition and some mechanical
properties (bend test at 4°C, Erichsen test)
not defined under the EN 988 standard
and of interest to roofers and transformers.
European EN 988 and PREMIUMZINC
quality requirements are met as shown
in the following table:
PREMIUMZINC, the quality label for VM ZINC
Controlled characteristics PREMIUMZINC standard EN 988 Standard
Zinc Z1 with limited Pb and Cd Z1
Copper 0.08 - 0.2% 0.8 - 1.0%
Titanium 0.07 - 0.12% 0.06 - 0.2%
Aluminium ≤ 0.015% ≤ 0.015%
Thickness of sheets / coils ± 0.02 mm ± 0.03 mm
Width of sheets / coils + 2 / 0 mm + 2 / 0 mm
Length of sheets + 5 / 0 mm + 10 / 0 mm
Straightness ≤ 1.5 mm/m ≤ 1.5 mm/m
Flatness ≤ 2 mm and omega ≤ 0,6 ≤ 2 mm
Mechanical properties (in the direction of rolling)
0.2% proof strength 110 - 150 N/mm ≥ 100 N/mm
Tensile strength 152 - 190 N/mm ≥ 150 N/mm
Elongation at fracture ≥ 40% ≥ 35%
Bend test No cracks on fold No cracks on fold
Straightening after bending No fracture -
Creep resistance ≤ 0.08% ≤ 0.1%
(during one hour under a load of 50 N/mm2)
Bend test at 4°C No fracture -
Stamping (Erichsen test) 7.5 mm depth without cracking -
Vickers hardness ≥ 45 -
Physical characteristics of VM ZINC titanium zinc
Density 7.2 kg/dm3
Thermal expansion coefficient 0.022 mm/m/°C
(parallel to the rolling direction)
Melting point 420°C
Recrystallization Point 300°C
Heat conductivity 110 W/(m.K)
Electrical conductivity 17 MS/m
Danger of sparking Non-sparking
Magnetic properties Diamagnetic
A UMICORE BRAND
A four-stage production process
Zinc is a naturally occurring metal which is 3 – Rolling
found in large quantities in the form of ore Three to five rolling operations are performed
in the earth’s crust. All operations, from the to reduce the slab to the required thickness.
transformation of the ore to the production Throughout this process, temperature, rolling
of rolled zinc and finished products, are speed and reduction rate are closely monitored
carried out within the Umicore Zinc Group and adjusted to obtain the requisite mechanical
to which the VM ZINC brand belongs. and dimensional characteristics.
The Smelting Unit transforms the ore into
zinc oxide in a process called “roasting”,
and into a zinc sulphate solution from the
calcinated zinc in a process called “leaching”.
The solution obtained supplies the electrolysis
hall where 99.995% pure zinc is obtained.
After the electrolytic process, the zinc is rolled
in two VM ZINC rolling mills in France.
1 – Alloying
The first stage consists of melting the pure
metal deposited on the cathodes during the
electrolysis process and adding a controlled
amount of copper and titanium in a series of
induction furnaces to produce a liquid alloy. 4 – Slitting into sheets and coils
One of the final steps involves slitting the
2 – Casting rolled zinc into sheets or coils of the requisite
The liquid metal is then transferred to a weight, width and thickness on specialised
continuous casting machine for solidification finishing lines.
into a continuous slab, about twelve millimetres
thick and approximately a metre wide.
The controlled cooling process within the Transforming
machine produces a fine, homogeneous
grain structure. The sheets and coils produced by the above
process are used by roofers in their workshops
and on building sites. They are also used in
the production of VM ZINC transformed
ELECTROLYSIS products (profiled sheets for roofing and
cladding systems, finishing and waterproofing
accessories, rainwater systems) or for
SMELTING transformation by partner companies.
CASTING ZINC ALLOY
CASTING FURNACE SMELTING
CUTTING TO LENGTH TRANSFORMED
TWO HIGH MILL FOUR HIGH MILL
An environment-friendly material
Where does zinc come from? In fact, too little zinc is much more harmful
than too much. Zinc deficiency can result in
Zinc is all around us as a naturally occurring serious health problems such as skin changes,
element. Most rocks and many minerals stunted growth, physical and mental lethargy
contain zinc in varying degrees. It also and interference with the functions of the
exists naturally in the air and in soil. spleen and liver, to name just a few.
Zinc is most commonly found in the
earth’s crust. Two thirds of the zinc used
by VM ZINC comes from North, Central What about zinc
and South America. in the environment?
Zinc is a non-poisonous and environmentally
Does zinc have an effect sound product. It does not contain impurities
on our health? that could be released into the atmosphere
and does not produce toxic fumes in case of
Zinc is essential to human health and all fire. Studies of the environment have shown
living organisms. It is the third most important that the amount of zinc in ecosystems is the
element in our bodies after magnesium and same whether from human or natural sources
iron and plays a vital role in our metabolism, and remains within the limits for optimal
particularly in the growth and development conditions for life.
of the brain and in the formation of DNA,
the basis of all life on our planet. Indeed, When chemically aggressive rainwater
zinc has long been used for medicinal purposes (acid rain) runs over zinc surfaces, the zinc
because of its anti-inflammatory, anti-bacterial can be eroded slowly over long periods of
and healing properties. time. The run-off water can contain zinc
Pavilion - Deauville - France
ions. Since zinc is an element essential for
life, this water can be used for such tasks as
plant watering without any known problems.
A UMICORE BRAND
But isn’t zinc classified Are we likely to run out of
as a heavy metal? zinc in the future?
Yes. However, unlike some other heavy In many cases the earth is not an inexhaustible
metals, it is not a toxic heavy metal. source of raw materials. However, we will
A heavy metal is simply a metal that has have a plentiful supply of zinc for a very
a density greater than 5 g/cm2. Zinc has long time, certainly for as far into the future
a specific gravity of 7 g/cm2. It is classified as we can see.
as a heavy metal because of this physical The world has about 430 million tons of
property which has nothing to do with exploitable zinc reserves which, at the present
whether or not it is toxic. Like gold, one rate of consumption, will cover our needs
of the heaviest metals, zinc is emphatically for more than thirty years. If we add the
non-toxic. On the contrary, it is essential sources of raw zinc identified world-wide,
to all forms of life and is used for many with a metal content estimated by experts
medicinal purposes: in vitamin supplements to be 1,900 million tons, we can see that
for example. humanity’s needs will be met for more than
a century. And that is before we take into
account zinc obtained from recycling.
Thermal baths of Cransac - France
Architects: Luc Demolombe and Jean-Paul Tournier
So zinc is recyclable?
Yes. When VM ZINC products come to the
end of their useful life they can be re-smelted.
In fact, because of their high metal content,
zinc scraps have a high value and are
practically 100% recyclable. Many new
products are created from recycled zinc
from buildings, for instance, zinc oxides
used in paint, for rubber production and
in pharmaceutical products.
Why is zinc an environmentally
sound decision for building?
Firstly, zinc is completely natural.
VM ZINC has no paint or coating that will
wear off over time and adversely affect
surrounding materials. A properly installed
VM ZINC roof or wall system can last up
to 100 years, depending on its location,
and unlike some other materials, it does not
harm the surrounding environment.
European center of volcanism - Saint-Ours-les-Roches - France
Architect: Atelier 4, Hans Hollein
The brand, products
International secondary school of Grenoble - France
Architect: Groupe 6
A long-standing tradition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 14
A Umicore brand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 15
Roofing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 16
Cladding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 18
Ornaments and other applications . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 19
At your service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 20
Quality is our watchword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . p. 22
A UMICORE BRAND
A long-standing tradition
Zinc: with us since the VM ZINC: almost 200
dawn of time years of history
Zinc is a truly international metal. It was From its birth in 1837 and for over 150
used, mainly in the form of copper and zinc years the Société des Mines et des
alloys, in ancient times in Greece and Egypt Fonderies de Zinc de la Vieille Montagne
for jewellery and funeral urns. Much later, was to establish zinc’s pedigree and develop
during the Middle Ages, it was produced in its application in the roofing industry.
the form of metal in China and India. In fact Zinc rapidly played a dominant role,
zinc first came to Europe from China at the especially in the building of modern Paris
end of the Middle Ages. It is therefore fitting under the influence of Baron Haussman.
that VM ZINC should now return this noble In 1853, the Compagnie Royale Asturienne
metal to Asia in new and exciting forms des Mines was founded. A hundred and
and applications. forty years later, in 1987, the two companies
merged to become Vieille Montagne France
and in 1993 they joined the Union Minière
Group which became the Umicore Group
in September 2001.
Zinc has become the emblem of modern
Paris for the entire world and its zinc
roofs, evoked in films, artistic photography
and paintings, are a testimony to the
natural beauty and enduring qualities
of this exceptional material.
50% of the roofs in Paris are currently
covered with zinc.
A Umicore brand
Drouot Auction Rooms - Paris
VM ZINC is now the international brand name of rolled zinc products manufactured and
sold by the Building Products Unit of the Belgian Group, Umicore.
The Umicore Group is an international metals and materials group. From refining, transforming
and marketing to recycling a wide range of metals, minerals and related products,
the Umicore Group operates world-wide and meets its customers’ requests through a network
of sales subsidiaries in over 30 countries, including China, Hong Kong, Taiwan, Malaysia,
Thailand and Korea. Its industrial activities are centred on 5 main groups: Zinc, Copper,
Advanced Materials, Precious Metals Services, Precious Metals Products and Catalysts.
The Building Products Unit belongs to the Zinc Group. Its main activity is transforming zinc
into rolled zinc and pre-formed products and marketing them throughout the world under
the VM ZINC brand.
VM ZINC: A broad range of products
a recognised brand for the building industry
With over 100,000 tons of rolled zinc The VM ZINC brand name represents a full
products sold world-wide every year, range of Titanium-Zinc products in the form
Umicore Building Products is the world leader of sheets, coils and manufactured products
in zinc and is particularly well established and systems. This extensive range of
in European, American and Asian markets. products and systems reflects our wealth of
The Unit pursues its international development professional and practical experience and
policy through its internationally recognised the variety of climates and standards that
brand name: VM ZINC. Evidence of our VM ZINC is designed to meet world-wide.
international presence can be seen today The brand is constantly evolving in response
on exciting buildings - from private houses to the needs of growing markets such as
to opera houses - in all four corners South-East Asia, the Far East, the USA and
of the world. Australia. To meet your every requirement,
VM ZINC is available in the following
VM ZINC plants
The company’s activities are on 4 main sites
in France: 3 production plants (Auby in the
North, Viviez in the South and Bray-et-Lû
near Paris) and its headquarters in Paris.
Other, smaller plants include plants for
transformed products in Germany, Portugal
and Switzerland, and a workshop in the
A UMICORE BRAND Paris area which produces large ornaments.
A UMICORE BRAND
In each country, our special relationship
with end users and our respect of local VM ZINC roofing
customs and traditional work methods help techniques and systems:
us produce the high quality results that
create the VM ZINC identity. This identity
• Standing seam roofing
can be summed up in a few words:
• VM ZINC structural roofing
durability, malleability, flexibility, aesthetics
• VM ZINC compact roofing
and prestige. Since it can be adapted to all • DELTA VM ZINC roofing system
types of pitch from 3° (5%) and to all roof • VM ZINC ribbed roofing
shapes (flat, curved, double curvature, etc.), • ADEKA
VM ZINC allows designers total freedom
Ribbed roofing - Office building - Switzerland
Architect: Proplaning S.A.
Compact roofing - Charles de Gaulle Airport - France
ADEKA - Private house - Navarra - Spain
Architects: Paul Andreu and Jean-Michel Fourcade
Architect: Miguel Angel Garaikoetxea
Standing seam - Felda auditorium - Malaysia
Architect: BEP Akitek
Standing seam - Felda auditorium - Malaysia
Architect: BEP Akitek
A UMICORE BRAND
Roofing techniques such as standing seam
have been used traditionally to protect
exposed facades. Architectural trends in
building envelopes have pushed this practice
well beyond simple practical necessity.
Today, in response to architects’ expectations,
VM ZINC has developed specific facade
systems that use all the qualities of zinc.
VM ZINC cladding
techniques and systems:
• Standing seam
• Interlocking panel
• FPS and HPS cassettes
• Sine wave profile
• Flat lock panel
Sine wave profile - Private house - Singapore
Architect: ChanSauYan Associates, CSYA Studio Pte Ltd
Standing seam - Dornbirn multipurpose hall - Austria Interlocking panel - School - France
Architect: Kaufmann 96 GmbH Architect: Pierre Edeikins
Ornaments and other applications
Top-of-the-range ornaments Flashings and accessories
The Ateliers d’Art Français is Umicore’s Because of its malleability VM ZINC can be
ornamentation brand. used for all types of accessories. We have
Weather vanes, weather cocks, ridge cap created a wide range of accessories and
finials, balustrades, bull’s eye windows, flashings which are designed primarily
campaniles, etc. are usually all formed, to ensure the watertightness and ventilation
stamped, assembled and soldered by hand. of roofs. We regularly add to this range.
They can be tailor made at the customer’s These products meet the technical requirements
request either from plans or drawings, of VM ZINC and requirements related
and be manufactured in zinc or copper. to the use of metal on natural or cement
fibre tiles, bitumen shingles, terracotta or
concrete tiles and to traditional assembly
Rainwater systems and fixing techniques.
Offering gutters, end pieces, outlets,
elbows, ring clips, downpipes, etc.,
the VM ZINC rainwater system range
is the most comprehensive on the market.
The different systems are manufactured
from sheets or coils in our plants.
Kiosk - Versailles - France
A UMICORE BRAND
At your service
At Umicore Building Products our commitment That is why we work closely with all those
goes much further than the delivery of involved, starting from the initial idea right
quality goods. We want to make sure that down to the finished building. Whether you
the owner or investor in the building is fully are an architect, a specification writer,
satisfied with our product’s appearance and profiler, general contractor or roofer we are
performance. there to help you.
supports the design team
Umicore Building Products employs a
team of architects, engineers and CAD
technicians to help you keep one step
ahead in the development of increasingly
daring and sophisticated roof shapes.
2. Substructure, type L 50x50x4 in galvanised steel
Our team will assist clients to design their
3. Plywood (thickness 18 mm) roofing or facade project and will stimulate
4. Waterproof membrane
5. Geotextile their creativity by providing innovative
6. VM ZINC PLUS standing seam system
solutions that respect budgetary
requirements and the relevant standards.
Here are some of the services provided:
• Feasibility analyses of even the most
• Recommendations for working drawings;
• Architectural assistance for the development
of innovative concepts;
• Review of shop drawings;
• Library of CAD drawings;
• Quantity estimates.
PRO-ZINC International Technical assistance
for roofing companies
The PRO-ZINC training programme is
a service offered by Umicore Building Our International Technical Assistance team
Products for professional roofers. It provides is made up of operational teams of roofers
comprehensive training in every aspect who are experts both in the most advanced
of utilising zinc as a building material in techniques in their field and in the specific
a variety of courses which last from one installation methods of each country.
to three days. A workshop environment Their training and professional experience
with full-scale mock-ups provides participants mean that they can maximise the roofing
with solutions in a comfortable setting, companies’ performance by assisting them
without the daily pressures associated with with site start-ups or follow-ups on all five
the job site. continents.
Several PRO-ZINC training centres are
available for roofing companies and roofers
in France, Germany, Belgium, Switzerland,
Hungary, Denmark, the Czech Republic,
the USA and Malaysia. They foster a sense
of community with our local partners and
are tailored to local requirements.
A UMICORE BRAND
Quality is our watchword
At Umicore Building Products we believe Storage recommendations
that service and quality are inextricably
linked. VM ZINC is known as the hallmark
of high quality titanium zinc, chosen for In order to preserve the quality of VM ZINC,
its durability, reliability and the pleasing the following recommendations should be
aesthetics of its surface aspects. strictly respected:
• Sheets and coils must be stored in a well-
Umicore Building Products is committed ventilated, sheltered and dry warehouse,
to a total quality approach. The unit has with a constant temperature so as to
ISO 9001 certification for all its French avoid condensation.
sites. This certification shows not only that • Sheets and coils must be separated from the
VM ZINC is recognised for quality products, ground by a pallet which allows sufficient
production, product design and services, air space for ventilation of the products.
but also that we are committed to continuous • In order to avoid deformation of the metal,
quality improvement with the aid of all sheets must be stored flat on the pallet.
our customers and partners. • When coils are shipped, they may be
placed either on their horizontal axis or
VM ZINC meets the criteria of the European vertical axis, according to the client’s
EN 988 standard and our PREMIUMZINC request. It is recommended that the coils
quality label offers an even higher be stored in their original packaging.
quality product. If coils are to be stacked due to lack of storage
space, the following recommendations must
• If the coils are delivered on their horizon-
VM ZINC and traceability
tal axis, the pallets must be stored in their
original packaging, and preferably indivi-
It is very easy to recognise a VM ZINC
dually on separating racks;
rolled product: all our rolled zinc has
• If the coils are delivered on their vertical
continuous ink marking which indicates,
axis, the pallets may be stored on top of
among other things, the thickness of
one another, up to a maximum of 5 pal-
the metal and the date and place it
lets for reasons of stability;
was produced. Formed products are
• Storage time for sheets and coils should
be kept as short as possible, especially on
the building site.
Storage and ventilation
The phenomenon of “white rust” has
absolutely no connection with the formation
of a natural patina. If there is no ventilation
(poor storage, transportation or installation
conditions), zinc hydroxide which is
powdery, non-adhesive and non-protective,
is formed. This phenomenon prevents the
formation of the natural protective patina
and the zinc corrodes more easily.
A UMICORE BRAND
RCS Nanterre B 377 670 989 - VM ZINC VM03035 - 03-09.03
40, rue Jean Jaurès - 93176 Bagnolet Cedex
Tel: + 33 1 49 72 42 42 - Fax: + 33 1 49 72 41 82
www.vmzinc.com - email : email@example.com
A UMICORE BRAND