prEN 508-2

SLOVENSKI STANDARD
01-september-2025
Pločevina za pokrivanje streh in oblaganje sten - Specifikacija za samonosilne
proizvode iz jeklene, aluminijeve pločevine ali pločevine iz nerjavnega jekla - 2.
del: Aluminij
Roofing and cladding products from metal sheet - Specification for self-supporting
products of steel, aluminium or stainless steel sheet - Part 2: Aluminium
Dachdeckungs- und Wandbekleidungselemente aus Metallblech - Spezifikation für
selbsttragende Bedachungselemente aus Stahlblech, Aluminiumblech oder
nichtrostendem Stahlblech - Teil 2: Aluminium
Produits de couverture et bardage en tôle métallique - Spécification pour les plaques de
couverture en tôle d'acier, d'aluminium ou d'acier inoxydable - Partie 2 : Aluminium
Ta slovenski standard je istoveten z: prEN 508-2
ICS:
77.150.10 Aluminijski izdelki Aluminium products
91.060.20 Strehe Roofs
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2025
ICS 91.060.20 Will supersede EN 508-2:2019
English Version
Roofing and cladding products from metal sheet -
Specification for self-supporting products of steel,
aluminium or stainless steel sheet - Part 2: Aluminium
Produits de couverture et bardage en tôle métallique - Dachdeckungs- und Wandbekleidungselemente aus
Spécification pour les plaques de couverture en tôle Metallblech - Spezifikation für selbsttragende
d'acier, d'aluminium ou d'acier inoxydable - Partie 2 : Bedachungselemente aus Stahlblech, Aluminiumblech
Aluminium oder nichtrostendem Stahlblech - Teil 2: Aluminium
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 128.
If this draft becomes a European Standard, 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.

This draft European Standard was established by CEN 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 CEN-CENELEC
Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.

Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 508-2:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions, symbols and abbreviations . 5
3.1 General. 6
3.2 Material definitions. 6
3.3 Profile definitions . 6
3.4 Symbols and abbreviations . 12
4 Requirements . 12
4.1 General. 12
4.2 Materials . 13
4.2.1 Aluminium . 13
4.2.2 Organic coatings . 14
4.2.3 Anodizing . 14
4.3 Products . 14
4.3.1 Mechanical resistance . 14
4.3.2 Design (calculation and tests) of mechanical resistance . 15
4.3.3 Dimensions. 15
4.3.4 Dimensional tolerances for the profiled sheet. 15
4.3.5 Safety in case of fire. 16
5 Test methods . 16
5.1 Material properties . 16
5.2 Surface properties . 16
5.3 Mechanical properties . 16
6 Marking, labelling and packaging . 17
6.1 Marking and labelling . 17
6.2 Packaging and special ordering conditions . 17
6.3 Transport, storage and handling . 17
Annex A (normative) Dimensional tolerances . 19
Annex B (informative) Test methods for concentrated load . 36
Bibliography . 37

European foreword
This document (prEN 508-2:2025) has been prepared by Technical Committee CEN/TC 128 “Roof
covering for discontinuous laying and products for wall cladding”, the secretariat of which is held by NBN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 508-2:2019.
— The list of aluminium alloys suitable for roofing and cladding products has been extended.
— These changes or additions can be found in the following Clauses and subclauses: 4.2.1.
This document has been prepared under a standardization request addressed to CEN by the European
Commission. The Standing Committee of the EFTA States subsequently approves these requests for its
Member States.
EN 508 Roofing and cladding products from metal sheet - Specification for self-supporting products of
steel, aluminium or stainless steel sheet consists of the following parts:
— Part 1: Steel;
— Part 2: Aluminium;
— Part 3: Stainless steel.
Introduction
Table 1 indicates the position of this document in the CEN framework of standards concerning roofing
and cladding products of metal sheet.
Table 1 — Framework of standards
Roofing and
cladding products
of metal sheet
Self-supporting    Fully supported
products products
EN 14782 EN 14783
Copper /
Steel Aluminium Stainless steel
Zinc
EN 508-1 EN 508-2 EN 508-3
EN 506
In this document the performance of the product has been defined in terms of calculation and a number
of type tests.
The performance of a roof or cladding constructed with these products depends not only on the
properties of the product as required by this document, 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 part of EN 508 specifies requirements for self-supporting external profiled sheets for roof covering,
wall cladding, lining and liner tray products for discontinuous laying made from aluminium sheet with or
without surface treatment (additional organic coatings or anodising).
This document establishes general characteristics, definitions, classifications and labelling for the
products, together with requirements for the materials from which the products can be manufactured. It
is intended to be used either by manufacturers to ensure that their products comply with the
requirements or by purchasers to verify that the products comply before they are made available on the
market before being dispatched from the factory. It specifies the requirements for products which enable
them to meet all normal service conditions.
This document applies to all discontinuously laid self-supporting external profiled sheets for roof
covering, wall cladding, lining and liner trays with the exception of tiles with a surface area less than 1 m
and produced by stamping. These profiled roof sheets are designed to keep wind, rain and snow out of
the building, and to transfer any resultant loads and infrequent maintenance loads to the structure.
This document does not cover products for structural purposes, i.e. it does cover products used in
structural class III (according to EN 1999-1-4), it does not cover products used in constructions of
structural classes I and II (according to EN 1999-1-4) intended to contribute to the global or partial
stability of the building structure by providing racking resistance or resistance of permanent static loads
(excluding self-weight of the metal sheet).
No requirements for supporting construction, design of roof or cladding system and execution of
connections and flashings are included.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 485-1, Aluminium and aluminium alloys — Sheet, strip and plate — Part 1: Technical conditions for
inspection and delivery
EN 485-4, Aluminium and aluminium alloys — Sheet, strip and plate — Part 4: Tolerances on shape and
dimensions for cold-rolled products
EN 1396, Aluminium and aluminium alloys — Coil coated sheet and strip for general applications —
Specifications
EN 14782, Self-supporting metal sheet for roofing, external cladding and internal lining — Product
specification and requirements
EN ISO 7599, Anodizing of aluminium and its alloys — Method for specifying decorative and protective
anodic oxidation coatings on aluminium (ISO 7599)
3 Terms and definitions, symbols and abbreviations
For the purposes of this document, the terms and definitions given in EN 485-1 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
NOTE Wherever the term aluminium is used it is meant unalloyed or alloyed aluminium.
3.1 General
3.1.1
self-supporting product
product which will, by virtue of its material and shape, support all applied loadings (e.g. snow, wind, foot
traffic, insulation, membrane), and transmit these loadings to spaced structural supports
3.2 Material definitions
3.2.1
temper
material conditions after a production stage, for example mechanical treatment and/or heat treatment,
intended to give the material physical and/or metallurgical properties
3.2.2
organic coated aluminium sheet
painted, post coated, laminated or coil coated (continuously organic coated) aluminium on one or on both
sides
3.2.3
anodized aluminium sheet
aluminium with an anodic coating, produced by an electrolytic oxidation process in which the surface of
the aluminium is converted to a mainly oxide coating having protective, decorative or functional
properties
3.3 Profile definitions
3.3.1
trapezoidal profiled sheet
self-supporting sheet which is designed to allow it to be side and end lapped, the crowns of which may
be rounded and, in addition, the crowns, web and valley may be stiffened
Note 1 to entry: See Figures 2, 3, 4 and 5.
Note 2 to entry: The names for various parts of typical trapezoidal profiled sheets are given in Figure 6 and
Figure 7.
Figure 2 — Part of typical trapezoidal profile

Figure 3 — Part of typical trapezoidal profile with rounded crowns
Figure 4 — Part of typical trapezoidal profile with stiffened crown and web

Figure 5 — Part of typical trapezoidal profile with stiffened valley
Key
1 cover width 7 depth
2 valley stiffener 8 valley
3 rib 9 pitch
4 web stiffener 10 crown
5 trough 11 drainage groove
6 web 12 crown stiffener
Figure 6 — Definitions of the parts of typical trapezoidal profiled sheets
Key
1 depth 5 web angle
2 pitch 6 bend radius
3 overlap 7 side lap in principle the same on tiles
4 angle 8 end lap
Figure 7 — Definitions of the parts of typical trapezoidal profiled sheets
3.3.2
sinusoidal profiled sheet
self-supporting sheet which is designed to allow it to be side and end lapped, comprising a series of arc
shaped crowns and valleys interconnected with tangential webs
Note 1 to entry: See Figure 8.
Note 2 to entry: Additional definitions for sinusoidal profiles in are given in Figure 9.
Key
1 depth
2 pitch
3 overlap
4 inclination
Figure 8 — Part of typical sinusoidal profiled sheet

Key
1 depth
2 pitch
Figure 9 — Definitions of the parts of typical sinusoidal profiled sheets
3.3.3
standing seam and concealed fix sheet
self-supporting sheet profiled in such a way that the fixings are hidden within the construction and are
not exposed to the weather
Note 1 to entry: The profile shape is designed to allow the formation of side laps on site.
Note 2 to entry: As these types of roof covering and cladding products are used in proprietary roofing and cladding
systems, no structural requirements are given within this part of EN 508.
Note 3 to entry: These products are normally designed by testing.
Note 4 to entry: See Figures 10 and 11.

Figure 10 — Typical standing seam profile
Figure 11 — Typical concealed fix profile
3.3.4
tile profile
part of typical tile profiled sheets that can allow the sheet to be side and/or end lapped
Note 1 to entry: The tile profiles can include transverse steps.
Note 2 to entry: As these types of roof covering products are used in proprietary systems no structural
requirements are given within this part of EN 508.
Note 3 to entry: These products are normally designed by testing.
Note 4 to entry: See Figures 12a, 12b and 12c.
Note 5 to entry: Additional definitions for tile profiles are given in Figure 13.

Figure 12 — Typical tile profiles
Key
1 height of the step
2 length of the step
3 number of steps
4 end lap
Figure 13 — Definitions of the parts of typical tile
3.4 Symbols and abbreviations
For the purposes of this document, the following symbols and abbreviations apply.
AA The symbols for aluminium sheets are the alloy symbols as in 4.2.1
AK Alkyd paint coating
AY Acrylic paint coating
EP Epoxy paint coating for use within a building
H Aluminium temper symbol
PUR Polyurethane paint coating
PUR-PA Polyamide-modified polyurethane paint coating
PVDF Polyvinylidenefluoride paint coating
PVF(F) Polyvinylfluoride film coating
SP Polyester paint coating
SP-PA Polyamid-modified polyester paint coating
SP-SI Silicone-modified polyester paint coating
4 Requirements
4.1 General
The product should be manufactured from materials complying with 4.2.
The supplier of the materials is responsible for carrying out the tests necessary to verify that the materials
supplied to the manufacturer comply with the requirements and should provide appropriate inspection
documents (according to EN 10204) on request.
NOTE The symbols and abbreviations used to designate the aluminium alloy, the type and thickness of the
organic coating are those of the standards referred to in Clause 2.
Product testing should be provided to a defined schedule. A permanent quality system should be adopted
by the manufacturer .
4.2 Materials
4.2.1 Aluminium
Aluminium alloys given in Table 2 are suitable provided that their properties conform to the values given
in the relevant material standards (EN 485-2, EN 573-3).
Table 2 — Alloys of aluminium
Designation based
Numerical designation
on chemical symbol
EN AW-1050A EN AW-Al 99,5
a
EN AW-1200
EN AW-Al 99,0
EN AW-3003 EN AW-Al Mn1Cu
EN AW-3004 EN AW-Al Mn1Mg1
EN AW-3005 EN AW-Al Mn1Mg0,5
EN AW-3005A EN AW-Al Mn1Mg0.5(A)
EN AW-3103 EN AW-Al Mn1
EN AW-3105 EN AW-Al Mn0,5Mg0,5
EN AW-3105B EN AW-Al Mn0,6Mg0,5
EN AW-4015 EN AW-Al Si2Mn
EN AW-4016 EN AW-Al Si2MnZn
EN AW-4017 EN AW-Al Si1MnCu
EN AW-5005 EN AW-Al Mg1(B)
EN AW-5005A EN AW-AlMg1(C)
EN AW-5006 EN AW-Al Mg1Mn0,5
EN AW-5050A EN AW-Al Mg1 (C)
EN AW-5052 EN AW-Al Mg2,5
EN AW-5083 EN AW-Al Mg4,5Mn0,7
EN AW-5251 EN AW-Al Mg2
EN AW-5754 EN AW-Al Mg3
EN AW-6025–7072 alclad EN AW-A1Mg2,5SiMnCu-A1Zn1 alclad
EN AW-6061 EN AW-Al Mg1SiCu
EN AW-8006 EN AW-AlFe1.5Mn
a
EN AW-8011 A
EN AW-Al Fe Si (A)
a
Only with organic coatings.
1 E.g. a quality management system based on EN ISO 9001.
Temper shall be chosen so that the ultimate tensile strength is not lower than 150 MPa.
Alloy and temper are chosen to give corrosion resistance, strength and formability. Specification of alloy,
temper and coating finish should be agreed between purchaser and supplier at the time of ordering.
Tolerances on shape and dimensions shall be in accordance with EN 485-4.
4.2.2 Organic coatings
The main external weather resistant organic coatings suitable for application to aluminium substrates
are given in Table 3.
Table 3 — Factory applied organic coatings
Type of coating Designation Remarks
Factory applied coatings Acrylic AY
Polyester SP
Silicone-modified polyester SP-SI
Polyvinylidene fluoride PVDF With proper primers
Polyamide-modified polyurethane PUR-PA
Polyurethane PUR
Polyamide-modified polyester SP-PA
Alkyd AK
Epoxy EP Only within buildings
Factory applied Polyvinyl fluoride PVF(F)
laminated film
NOTE Aluminium sheet is used either without coating or with organic coatings mainly for aesthetic reasons.
It should be noted that different coating systems behave in different ways under various climatic
conditions. The primer and/or adhesive should be chosen taking into account which type of substrate,
pre-treatment and top coat are used.
Reverse side painting or coating is used if being required for handling and storage reasons as well as for
corrosion protection in some installation conditions.
Performance and test methods for coil coated aluminium shall be in accordance with EN 1396.
Special coatings or films may be applied to the reverse side to reduce the dripping of moisture caused by
condensation.
4.2.3 Anodizing
Roofing and cladding products may have also anodised surfaces.
Product specifications for anodised aluminium shall be in accordance with EN ISO 7599.
4.3 Products
4.3.1 Mechanical resistance
The manufacturer shall state the cross-sectional, material and member characteristics required for
design and use-related verification at the place of use.
The product for roof shall resist the design loads from self-weight, insulation (if applicable), eventual
membranes, snow, wind and maintenance. These loads shall be factored such that they will not impair
the performance (mechanical stability, and serviceability) of the cladding.
NOTE 1 The load level, the levels of safety and permissible deflection are defined in national building regulations.
The product f
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