BRITISH STANDARD

Roofing products from
metal sheet —
Specification for fully
supported roofing
products of zinc sheet

The European Standard EN 501:1994 has the status of a
British Standard

UDC 692.415:669.5-41:620.1

BS EN
501:1994


BS EN 501:1994

Cooperating organizations
The European Committee for Standardization (CEN), under whose supervision
this European Standard was prepared, comprises the national standards
organizations of the following countries:
Austria
Belgium
Denmark
Finland
France
Germany
Greece
Iceland

Ireland
Italy
Luxembourg
Netherlands
Norway
Portugal
Spain
Sweden
Switzerland
United Kingdom

This British Standard, having
been prepared under the
direction of the Technical
Committee B/542, was
published under the
authority of the Standards
Board and comes
into effect on
15 December 1994
© BSI 12-1999
The following BSI references
relate to the work on this
standard:
Committee reference B/542/5
Draft for comment 91/14200 DC
ISBN 0 580 23117 8

Oesterreichisches Normungsinstitut
Institut belge de normalisation

Dansk Standard
Suomen Standardisoimisliito, r.y.
Association franỗaise de normalisation
Deutsches Institut fỹr Normung e.V.
Hellenic Organization for Standardization
Technological Institute of Iceland
National Standards Authority of Ireland
Ente Nazionale Italiano di Unificazione
Inspection du Travail et des Mines
Nederlands Normalisatie-instituut
Norges Standardiseringsforbund
Instituto Portugs da Qualidade
Asociación Espola de Normalización y Certificación
Standardiseringskommissionen i Sverige
Association suisse de normalisation
British Standards Institution

Amendments issued since publication
Amd. No.

Date

Comments


BS EN 501:1994

Contents
Cooperating organizations
National foreword

Foreword
Text of EN 501
National annex NA (informative) Committees responsible
National annex NB (informative) Cross-references

© BSI 12-1999

Page
Inside front cover
ii
2
3
Inside back cover
Inside back cover

i


BS EN 501:1994

National foreword
This British Standard has been prepared under the direction of the Technical
Committee B/542, Roofing and cladding products for discontinuous laying, and is
the English language version of EN 501:1994 Roofing products from metal
sheet — Specification for fully supported roofing products of zinc sheet, published
by the European Committee for Standardization (CEN).
EN 501 was produced as a result of international discussions in which the UK
took an active part.
A British Standard does not purport to include all the necessary provisions of a
contract. Users of British Standards are responsible for their correct application.

Compliance with a British Standard does not of itself confer immunity
from legal obligations.

Summary of pages
This document comprises a front cover, an inside front cover, pages i and ii,
the EN title page, pages 2 to 10, an inside back cover and a back cover.
This standard has been updated (see copyright date) and may have had
amendments incorporated. This will be indicated in the amendment table on the
inside front cover.
ii

© BSI 12-1999


EUROPEAN STANDARD

EN 501

NORME EUROPÉENNE
May 1994

EUROPÄISCHE NORM
UDC 692.415:669.5-41:620.1

Descriptors: Roofs, pitched roofs, metal roofing, zinc, zinc alloys, copper alloys, titanium alloys, metal plates, specifications,
characteristics, dimensions, dimensional tolerances, chemical composition, tests, quality control, designation, marking

English version

Roofing products from metal sheet — Specification for

fully supported roofing products of zinc sheet

Produits de couverture en tôle métallique —
Spécification pour les produits de couverture
en feuille de zinc totalement supportés

Dachdeindeckungsproduckte aus
Metallblech — Festlegungen für vollflächig
unterstütze — Bedachungselemente aus
Zinkblech

This European Standard was approved by CEN on 1994-05-18. CEN members
are bound to comply with the CEN/CENELEC Internal Regulations which
stipulate the conditions for giving this European Standard the status of a
national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national
standards may be obtained on application to the Central Secretariat or to any
CEN member.
This European Standard exists in three official versions (English, French,
German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the
Central Secretariat has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy,
Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and
United Kingdom.

CEN
European Committee for Standardization
Comité Européen de Normalisation

Europäisches Komitee für Normung
Central Secretariat: rue de Stassart 36, B-1050 Brussels
© 1994 Copyright reserved to CEN members

Ref. No. EN 501:1994 E


EN 501:1994

Foreword
This European Standard has been prepared by
CEN/TC 128 “Roof covering products for
discontinuous laying”, the secretariat of which is
held by ON. This European Standard shall be given
the status of a National Standard, either by
publication of an identical text or by endorsement,
at the latest by November 1994, and conflicting
national standards shall be withdrawn at the latest
by November 1994.
According to the CEN/CENELEC Internal
Regulations, the following countries are bound to
implement this European Standard: Austria,
Belgium, Denmark, Finland, France, Germany,
Greece, Iceland, Ireland, Italy, Luxembourg,
Netherlands, Norway, Portugal, Spain, Sweden,
Switzerland, United Kingdom.

2

Contents

Foreword
0
Introduction
1
Scope
2
Normative references
3
Definitions, symbols and abbreviations
3.1 Definitions
3.2 Product geometry
3.3 Symbols and abbreviations
4
Requirements
4.1 General
4.2 Material requirements
4.3 Product requirements
4.4 Fasteners
5
Sampling and test methods
5.1 Flat products
5.2 Formed (prefabricated) products
6
Designation
7
Marking, labelling and packaging
7.1 Marking and labelling
7.2 Packaging
7.3 Transport, storage and handling
7.4 Information to be supplied by the

purchaser
Figure 1 — Framework of standards
Figure 2 — Standing seam construction
(as example), section Before installation
Figure 3 — Standing seam construction,
view Before installation
Table 1 — Dimensional tolerances on
products without on site folded joints

Page
2
3
3
4
4
4
5
5
6
6
6
6
7
7
7
7
8
8
8
8

8
8
3
5
5
7

© BSI 12-1999


EN 501:1994

0 Introduction
Figure 1 indicates the position of this standard in the CEN framework of standards

Figure 1 — Framework of standards
In this standard the performance of the product has been defined as far as possible in terms of a number
of type tests.
The performance of a roof constructed with these products depends not only on the properties of the product
as it is required by this standard, but also on the design, construction and performance of the roof as a
whole in relation to the environment and conditions of use.

1 Scope
This European Standard specifies requirements for roofing products used for assembly into coverings for
pitched roofs, made from Zinc-copper-titanium1) alloy sheet with or without additional coatings.
The standard establishes the general characteristics, definitions, labelling and quality control for the
products. Products can be prefabricated or semiformed products (e.g. interlocking tiles, slates, flashings)
as well as strip, coil, sheet for on-site-formed applications (e.g. standing seam roofs, roll cap).
The standard applies to all discontinuously laid and fully supported roofing made of Zinc-copper-titanium
alloy (Zn-Cu-Ti). No requirements for application (e.g. methods of fixing, supporting construction, design

of roof system, execution of connections and flashings) are included. It defines the requirements for roofing
products made from zinc sheets, slit coils, coils and cut lengths to comply with normal service conditions.
NOTE The standard deals partly with flat products, partly with formed (prefabricated) products. Valuable information regarding
preformed products is found in prEN 506.

1) zinc

alloyed with copper and titanium.

© BSI 12-1999

3


EN 501:1994

2 Normative references
This European Standard incorporates by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references subsequent amendments to or revisions of any of these publications apply
to this European Standard only when incorporated in it by amendment or revision. For undated references,
the latest edition of the publication referred to applies.
— EN 10204
— prEN 988
— prEN 506
— EN ...

Metallic products — Types of inspection documents.
Zinc and zinc alloys — Specification for rolled flat products for building
Roofing products from metal sheet — Specification for self supporting products of

copper and zinc sheet.
Document from CEN/TC 127, Fire safety in buildings

3 Definitions, symbols and abbreviations
3.1 Definitions
For the purposes of this standard, the following definitions apply.
NOTE The following names designate the same product:
E: Zinc-copper-titanium
F: Zinc-cuivre-titane
D: Titanzink

3.1.1
organic coated zinc
zinc which is painted in a continuous line with rolls for application of the paint, also called coil-coated zinc
NOTE

Coil coated (continuously organic coated) zinc sheet can be delivered for special architectural reasons.

3.1.2
fully supported
installation conditions so that the bottom flat portions of the product are supported by a continuous
supporting construction
3.1.3
coil, strip or slit coil
definitions are given in prEN 988
3.1.4
sheet or cut length
definitions are given in prEN 988
3.1.5
formed (prefabricated) product

definitions are given in prEN 506

4

© BSI 12-1999


EN 501:1994

3.2 Product geometry

Figure 2 — Standing seam construction (as example), section
Before installation

Figure 3 — Standing seam construction, view
Before installation
3.3 Symbols and abbreviations
The following symbols and abbreviations apply:
Zn-Cu-Ti
AY
SP

© BSI 12-1999

Zinc-copper-titanium alloy according to 4.2.
acrylic paint coating
polyester paint coating

5



EN 501:1994

SP-SI
PVDF
PVC(P)
PW

silicon-polyester paint coating
polyvinylidene fluoride paint coating
polyvinylchloride(plastisol) coating, applied by coil coating process
preweathered surface by chemical treatment

4 Requirements
4.1 General
Elements made of sheets, cut lengths, coils and slit coils can be cut, bent, seamed, formed and soldered
without difficulty within the given limits of the properties listed in the respective material specifications.
The product properties depend upon its shape and the material used. Requirements for materials are
specified in prEN 988.
The material tests (metal sheet, paint, surface treatment, etc.) are the responsibility of the material
manufacturer and will be supplied on request by the product manufacturer.
In this standard account is taken as far as possible of the essential requirements in the Construction
Products Directive.
4.2 Material requirements
4.2.1 General
The Zinc-copper-titanium alloy can be either cast in slabs or continuously cast. These shall be rolled into
coils. The sheets and cut lengths are cut from coils or slit coils.
Zinc-copper-titanium alloy is suitable for fabrication of fully supported roofing products either in an
industrial process or by an on-site process.
4.2.2 Chemical composition

The chemical composition is specified in prEN 988.
4.2.3 Physical and mechanical properties
The physical and mechanical properties are specified in prEN 988.
4.2.4 Organic coatings or chemical treatments on zinc sheet
Coatings shall be selected depending on processing and service conditions.
Within this standard, specified organic coatings are acrylic paint coating (AY), polyester (SP) or
silicon-polyester (SP-SI) paint coating, polyvinylidene fluoride paint coating (PVDF),
polyvinylchloride(plastisol) coating [PVC(P)]. Chemical treatment may be used to provide a preweathered
surface (PW).
4.2.5 Surface appearance of zinc without additional organic coating
The surface of the product shall be smooth; i.e. free from large blisters. Superficial striations, small blisters
and rolling marks are acceptable insofar as they do not hamper fabrication.
Surface flaws such as white rust, grease or oil marks are acceptable since they fade, as the weathering
patina forms, without undermining the properties of the metal.
4.3 Product requirements
4.3.1 Mechanical properties
Mechanical properties are specified in prEN 988.
4.3.2 Dimensions and tolerances
Dimensions and tolerances of sheet and coil are specified in prEN 988. The minimum nominal thickness
allowed for fully supported roofing products is 0,6 mm.
4.3.3 Shape and tolerances for formed (prefabricated) products
Formed (prefabricated) products are divided into two categories:
a) those to be joined by on-site folding processes
b) those to be joined without on-site folding processes

6

© BSI 12-1999



EN 501:1994

4.3.3.1 Products with on-site folded joints
The shape and the tolerances are to be agreed by purchaser and customer according to the application.
They depend especially on the technical and architectural requirements and on the folding machines and
other equipment used.
4.3.3.2 Products without on-site folded joints
Depending on dimensional requirements for the product, matching requirements and fabrication, values
may be agreed at the time of ordering.
However, if no dimensional tolerances are specified, the minimum tolerances given in Table 1 have to be
met (measured without load, continuously supported, at a sample temperature of 20 °C ± 2 °C).
Table 1 — Dimensional tolerances on
products without on site folded joints
Geometrical
characteristics

length (L)
straightness (fs)
cover width (B)
depth (H)

Tolerances

0/+ 10 mm
2 mm/m length
– 5 mm/+ 5 mm
– 1 mm/+ 1,5 mm

Definitions of geometrical shapes are given in 3.2. Measurements are made at 200 mm from the ends of the
product, see 3.2.

4.3.4 Safety in case of fire
The requirements regarding fire are specified in EN ... (CEN/TC 127) and in national regulations. National
regulations specify the requirements regarding spread of flame for organic coatings.
NOTE

All products referred to in this standard are non-combustible and resistant against sparks and heat radiation.

4.3.5 Safety in use, hygiene, health and the environment
Reasonable care, in accordance with appropriate national regulations, should be taken to ensure that
sheets cannot fall from the building during erection and handling, nor cause injury to the operatives hands
from sharp edges. No special precautions need to be taken in the handling and fixing of coated metal roof
sheets.
4.4 Fasteners
Fasteners shall be made from materials that give sufficient mechanical strength and have good durability.
Accepted materials are:
— Zinc-copper-titanium
— galvanized steel
— stainless steel (Cr-Ni)
— aluminium
— tin-plated copper.
Their qualities and dimensions are determined by national Codes of Practice and/or regulations.

5 Sampling and test methods
5.1 Flat products
The sampling and test methods are specified in prEN 988.
5.2 Formed (prefabricated) products
5.2.1 Sampling
The purchaser or his representative may select from each delivery the number of products required for the
tests.
5.2.2 Testing

5.2.2.1 General
The products may be supplied with or without testing for compliance with the requirements.
© BSI 12-1999

7


EN 501:1994

If testing is desired, the purchaser shall give the following information at the time of ordering:
— type of test (specific or non-specific test, see EN 10204)
— type of inspection document, see EN 10204.
5.2.2.2 Tests units
For dimensional tolerances the test unit consists of at least one complete piece of the amount delivered.
If specially agreed, at the time of order between purchaser and manufacturer, the test unit may consist of
more than one piece.
5.2.2.3 Number of tests
One series of tests shall be carried out per test unit as specified in 4.3.3 to determine the geometrical
characteristics.

6 Designation
Products covered by this standard shall be designated as follows:
— type of product (e.g. sheet, coil, slit coil, cut length, interlocking tile, slate),
— short designation of material (see 3.1) or full designation,
— number of this standard (EN 501).

7 Marking, labelling and packaging
7.1 Marking and labelling
The following minimum marking requirements shall apply:
— the minimum marking requirements specified in prEN 988,

— the number of this standard (EN 501),
— the name or registered identification of the manufacturer.
Marking shall be continuously printed directly on the products, or the above mentioned information shall
be put on a label attached to every pack, coil, bundle or delivery unit.
Any instructions for handling, storage, net or gross weight (kg) shall be clearly visible on package.
7.2 Packaging
The type of packaging shall be determined by the supplier who shall make it suitable for normal conditions
of transport. The packaging shall never impair the quality of the product.
NOTE If severe service conditions are expected during transportation, storage or processing the product may be supplied with an
additional protection of a temporary, strippable film, wax or oil, by agreement.
Type, thickness, adhesion properties, formability, tear strength and light fastness are to be taken into consideration when choosing
protective films.
All protective films can only be exposed to outdoor weathering for a limited period without deterioration.

7.3 Transport, storage and handling
At delivery, the goods shall be handled with care to maintain the quality of the product.
The products shall be dispatched and stored in conditions which protect them from humidity and
condensation.
Moisture, in particular condensation inside packages, may lead to the formation of stains. If there is
prolonged contact with moisture there may be further aesthetic damage to the product, particularly the
formation of white rust.
The goods shall be stored under a ventilated shelter (e.g. covered warehouse or under a tarpaulin). Goods
shall be separated from the ground by battens which allow enough space for good ventilation. Care shall
be taken to avoid permanent deformation of sheets, coils, slit coils and cut lengths or prefabricated
products.
7.4 Information to be supplied by the purchaser
To comply adequately with the requirements of this standard, enquiries and orders shall include the
following information:
— reference to this standard (EN 501),


8

© BSI 12-1999


EN 501:1994

— name of the product (coil, slit coil, sheet, cut length),
— material designation (Zn-Cu-Ti),
— dimensions required (thickness, width, length),
— the quantity required,
— where appropriate, details on fabrication after delivery,
— where appropriate, the packing requirements,
— where appropriate, surface treatment.

© BSI 12-1999

9


10

blank


BS EN 501:1994

National annex NA (informative)
Committees responsible
The United Kingdom participation in the preparation of this European Standard was entrusted by

Technical Committee B/542, Roofing and cladding products for discontinuous laying, to Subcommittee
B/542/5, Sheet roof and wall coverings, upon which the following bodies were represented:
Aluminium Federation
Association of British Roofing Felt Manufacturers
Copper Development Association
Department of the Environment (Building Research Establishment)
Institute of Plumbing
Institution of Structural Engineers
Lead Development Association
Metal Roofing Contractors’ Association
National Federation of Roofing Contractors
Steel Casting Research and Trade Association
Steel Construction Institute
Zinc Development Association

National annex NB (informative)
Cross-references
Publication referred to

Corresponding British Standard

EN 10204:1991

BS EN 10204:1991
Metallic products. Types of inspection documents
BS EN 506:1993 Roofing products of metal sheet — Specification for
self-supporting products of copper or zinc sheet

EN 506:1993


© BSI 12-1999


BS EN
501:1994

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