ISO 11479-2:2011
(Main)Glass in building — Coated glass — Part 2: Colour of façade
Glass in building — Coated glass — Part 2: Colour of façade
ISO 11479-2:2011 specifies a method for objective evaluation of the colour of coated glass when used in facades and viewed from the outside, as well as for measuring colour differences within the same glass pane and between two adjacent panes in the same facade. ISO 11479-2:2011 does not specify requirements for determining colour differences of transmitted colour as viewed from the inside or outside of a facade, nor for internal reflected colour. The comparison should only be undertaken for panes of the same glass type, composition and interior conditions and situated in the same plane of a facade. Specific requirements are given for coated glass, dependent upon its light transmittance and reflectance. ISO 11479-2:2011 is not applicable to curved or bent glass, which is specifically excluded for technical reasons.
Verre dans la construction — Verre à couche — Partie 2: Couleur des façades
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INTERNATIONAL ISO
STANDARD 11479-2
First edition
2011-10-01
Glass in building — Coated glass —
Part 2:
Colour of façade
Verre dans la construction — Verre à couche — Partie 2: Couleur des
façades
Reference number
ISO 11479-2:2011(E)
©
ISO 2011
---------------------- Page: 1 ----------------------
ISO 11479-2:2011(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 11479-2:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11479-2 was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 1,
Product considerations.
ISO 11479 consists of the following parts, under the general title Glass in building — Coated glass:
— Part 1: Physical defects
— Part 2: Colour of façade
© ISO 2011 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 11479-2:2011(E)
Introduction
It is known that façades incorporating coated glass can present different shades of the same colour, an effect
that can be amplified when observed under an angle. Possible causes of differences in colour include slight
variations in the colour of the substrate onto which the coating is applied and slight variations in thickness of the
coating itself. Furthermore, for highly selective coatings, a slight variation in thickness can create a difference
in colour, visible due to the high sensitivity of the human eye.
The purpose of this International Standard is to avoid any subjective approaches that might have been used in
the past. This is achieved through the use of spectroscopic techniques and defined evaluation practices.
All measured values concern the finished glass product as installed in the façade and not the single components.
iv © ISO 2011 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 11479-2:2011(E)
Glass in building — Coated glass —
Part 2:
Colour of façade
1 Scope
This part of ISO 11479 specifies a method for objective evaluation of the colour of coated glass when used in
façades and viewed from the outside, as well as for measuring colour differences within the same glass pane
and between two adjacent panes in the same façade. This part of ISO 11479 does not specify requirements
for determining colour differences of transmitted colour as viewed from the inside or outside of a façade, nor
for internal reflected colour. The comparison should only be undertaken for panes of the same glass type,
composition and interior conditions and situated in the same plane of a façade.
Specific requirements are given for coated glass, dependent upon its light transmittance and reflectance.
This part of ISO 11479 is not applicable to curved or bent glass, which is specifically excluded for technical reasons.
NOTE Information on the perception, quantification and measurement of colour is given in Annex A.
2 Symbols
NOTE The following symbols form part of the colour measurement system used in this part of ISO 11479, which is
based on ISO 11664-4:2008 (CIE S 014-4/E:2007).
2.1
L*
lightness assuming a value between 0 and 100
NOTE L* = 0 is black, L* = 100 is white.
2.2
a*
colour definition between green and magenta
NOTE Negative a* is green, positive a*
...
INTERNATIONAL ISO
STANDARD 11479-2
First edition
2011-10-01
Glass in building — Coated glass —
Part 2:
Colour of façade
Verre dans la construction — Verre à couche — Partie 2: Couleur des
façades
Reference number
ISO 11479-2:2011(E)
©
ISO 2011
---------------------- Page: 1 ----------------------
ISO 11479-2:2011(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2011
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2011 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 11479-2:2011(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies
(ISO member bodies). The work of preparing International Standards is normally carried out through ISO
technical committees. Each member body interested in a subject for which a technical committee has been
established has the right to be represented on that committee. International organizations, governmental and
non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International
Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 11479-2 was prepared by Technical Committee ISO/TC 160, Glass in building, Subcommittee SC 1,
Product considerations.
ISO 11479 consists of the following parts, under the general title Glass in building — Coated glass:
— Part 1: Physical defects
— Part 2: Colour of façade
© ISO 2011 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 11479-2:2011(E)
Introduction
It is known that façades incorporating coated glass can present different shades of the same colour, an effect
that can be amplified when observed under an angle. Possible causes of differences in colour include slight
variations in the colour of the substrate onto which the coating is applied and slight variations in thickness of the
coating itself. Furthermore, for highly selective coatings, a slight variation in thickness can create a difference
in colour, visible due to the high sensitivity of the human eye.
The purpose of this International Standard is to avoid any subjective approaches that might have been used in
the past. This is achieved through the use of spectroscopic techniques and defined evaluation practices.
All measured values concern the finished glass product as installed in the façade and not the single components.
iv © ISO 2011 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 11479-2:2011(E)
Glass in building — Coated glass —
Part 2:
Colour of façade
1 Scope
This part of ISO 11479 specifies a method for objective evaluation of the colour of coated glass when used in
façades and viewed from the outside, as well as for measuring colour differences within the same glass pane
and between two adjacent panes in the same façade. This part of ISO 11479 does not specify requirements
for determining colour differences of transmitted colour as viewed from the inside or outside of a façade, nor
for internal reflected colour. The comparison should only be undertaken for panes of the same glass type,
composition and interior conditions and situated in the same plane of a façade.
Specific requirements are given for coated glass, dependent upon its light transmittance and reflectance.
This part of ISO 11479 is not applicable to curved or bent glass, which is specifically excluded for technical reasons.
NOTE Information on the perception, quantification and measurement of colour is given in Annex A.
2 Symbols
NOTE The following symbols form part of the colour measurement system used in this part of ISO 11479, which is
based on ISO 11664-4:2008 (CIE S 014-4/E:2007).
2.1
L*
lightness assuming a value between 0 and 100
NOTE L* = 0 is black, L* = 100 is white.
2.2
a*
colour definition between green and magenta
NOTE Negative a* is green, positive a*
...
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