prEN 17259

SLOVENSKI STANDARD
01-september-2018
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Conservation of Cultural Heritage - Finishes and surfaces of built heritage - Investigation
and documentation (APR)
Erhaltung des kulturellen Erbes - Oberflächen gebauten Kulturerbes - Untersuchung und
Dokumentation (APR)
Conservation des biens culturels - Finitions et surfaces du patrimoine bâti - Investigation
et documentation
Ta slovenski standard je istoveten z: prEN 17259
ICS:
91.040.01 Stavbe na splošno Buildings in general
97.195 8PHWQLãNLLQREUWQLãNLL]GHONL Items of art and handicrafts.
.XOWXUQHGREULQHLQNXOWXUQD Cultural property and
GHGLãþLQD heritage
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2018
ICS 97.195
English Version
Conservation of Cultural Heritage - Finishes and surfaces
of built heritage - Investigation and documentation (APR)
Conservation des biens culturels - Finitions et surfaces Erhaltung des kulturellen Erbes - Oberflächen
du patrimoine bâti - Investigation et documentation gebauten Kulturerbes - Untersuchung und
Dokumentation (APR)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 346.
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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17259:2018 E
worldwide for CEN national Members.

prEN WI 00346050:2018 (E)
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Symbols and abbreviated terms . 7
5 General (pre-commission) . 8
6 The stages of investigation (post-commission) . 13
7 Archiving . 16
Annex A (informative) Example of period charts . 17
Annex B (informative) Examples of stratigraphic exposure and probing cut . 20
Annex C (informative) Examples of findings . 23
Bibliography . 28
European foreword
This document (prEN 17259:2018) has been prepared by Technical Committee CEN/TC 346
“Conservation of Cultural Heritage”, the secretariat of which is held by UNI.
This document is currently submitted to the CEN Enquiry.
Introduction
Throughout its existence, built heritage has been subjected to continuous change and alteration. The
most frequent change being the repeated refurbishing and redecoration of interiors and facades,
carried out in response to a wide range of factors, such as developments in decorative fashions, changes
in the functions of rooms, changes in the wealth of successive occupants and owners, the need to revive
an old and worn painted decoration or simply routine maintenance. The investigation and
documentation of built heritage finishes and surfaces, also known as Architectural Paint Research
(APR) , provides a systematic method of understanding and documenting such changes. It also offers
insights into the appearance of original and later decorative schemes and may provide dates for the
application of specific schemes. This research may also provide information about structural alterations
made to a building or object, for example, the absence of early decorative layers may indicate that an
architectural element was added or replaced at a later stage. The purpose of this kind of investigation is
to locate, identify, interpret and date current and historic finishes. These investigations on finishes help
to deepen general knowledge of building history, alterations, assess their condition and plan future
work.
The focus of this type of investigation is to describe the decorative, protective and other finishes
routinely applied to both interior and exterior architectural elements. While every investigation will
have its own specific aims and research objectives, most investigations will aim to provide a narrative
account of the decorative history of the object of investigation, for example a room or façade, from its
original decoration to the most recent decorative scheme. The term finish includes accumulated layers
of ordinary industrial or house-paints, but also other finishes, such as decorative and illusionistic paint
or tooling effects, such as stencilling, shuttering marks, marbling, wood graining; applications of metal
leaf and varnishes, just to mention a few. The recording of the presence of layers of wallpaper, and wall
paintings, also fall within the scope and remit of a typical investigation. Finishes are applied to a wide
range of substrate materials composed from wood, metal, plaster, natural stone, concrete, paper,
textiles, etc. A surface of a raw building material may also be considered as a finish layer.

The term Architectural Paint Research (APR) is the established term in English speaking and some other European countries. For the
purpose of this standard, the abbreviation APR is sometimes used.
1 Scope
This document defines core procedures for collecting and processing data and findings when
investigating finishes and surfaces of built heritage, establishing original and subsequent colour
schemes. It applies mainly to buildings and interiors, but the specified methodology could also be used
for other cultural heritage objects.
This document applies to planning, commissioning and executing such investigations – from the initial
project brief to the final report, and its dissemination. The document should be used as a process
reference for stakeholders involved in investigating finishes and surfaces of built heritage and informed
building conservation.
It describes some advantages and limitations of basic investigation techniques. It specifies the structure
and content of documentation/reports to be delivered to the commissioning party.
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 15898, Conservation of cultural property — Main general terms and definitions
EN 16085, Conservation of Cultural property — Methodology for sampling from materials of cultural
property — General rules
3 Terms and definitions
For the purposes of this document, the general terms and definitions given in EN 15898 and the
following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
3.1
architectural element
part of the design or the construction of a built heritage object
3.2
architectural paint research (APR)
systematic investigation and documentation of finishes and surfaces applied to build heritage
3.3
built heritage
standing structures which have an architectural, cultural or historical value
3.4
condition report
record of condition for a specific purpose, dated and authored
[SOURCE: EN 15898:2011, 3.6.5]
Note 1 to entry: A condition report normally results from a condition survey.
3.5
cross-section
prepared sample of finishes cut crosswise for observation of the stratigraphy by use of a microscope
Note 1 to entry: The most common cross-section is mounted in resin and cut and polished perpendicularly to
examine the accumulated paint layers.
3.6
exposure
process or result of removing overlaying layers from surface areas to show the visual aspect of
underlying layers
Note 1 to entry: See also 3.17 stratigraphic exposure.
3.7
feasibility study
initial general survey of available documentation and onsite assessment of the current visible state of
finishes to assess the aims of the investigation
3.8
finish
material and/or treatment applied to improve, protect or decorate surfaces of built heritage
EXAMPLES Paints, varnishes, gilding, wood finishes, textiles and/or wallpapers, plasters, renders, stucco.
Note 1 to entry: A finish can be composed of several layers (primer, undercoat, top coat, glazes and varnishes),
forming one scheme or an uncoated surface left as built intentionally.
Note 2 to entry: This definition applies to the central element of this standard regardless of translation
(architectural finishes, Architekturfassungen and surfaces du bâti /finis architecturaux/surfaces
architecturées/surfaces architecturales).
3.9
investigator
qualified and experienced professional who performs investigation and documentation of finishes and
surfaces of built heritage
Note 1 to entry: Authorization or accreditation of investigators is to be applied in countries where such systems
exist.
3.10
object
single manifestation of tangible cultural heritage
[SOURCE: EN 15898:2011, 3.1.3]
Note 1 to entry: For the purpose of this standard, the term object is limited to built heritage.
Note 2 to entry: The term “object” is used in this standard for cultural heritage, both immovable and movable. In
specific professional contexts, other terms are used: e.g. "artefact", “cultural property", “item”, “ensemble”, “site”,”
building”, "fabric”.
3.11
period chart
concise time-referenced diagrammatic overview of all the schemes found on architectural elements, e.g.
a façade or an interior (also known as explanatory chart or room chart)
Note 1 to entry: See Annex A for an example.
3.12
photomicrograph
photograph taken with a camera mounted on a microscope
3.13
probing cut
sloping cut
oblique incision from the surface to the substrate made to expose the accumulated layers of several
finishes to establish the presence of surviving layers (see example in Annex B)
3.14
project brief
initial description of the objective, background and context for the overall project
3.15
sampling
process of removing a sample
[SOURCE: EN 16085:2012, 3.3]
Note 1 to entry: In this standard, sampling refers to the process of collecting material from an object for further
examination and recording its location.
3.16
scheme
all applied finishes assigned to one particular period in time (also known as colour scheme or
decorative scheme)
3.17
stratigraphic exposure
process or result of exposure where the colour and texture of successive layers are uncovered stepwise
and side-by-side
3.18
substrate
material of an object on which finishes are applied
4 Symbols and abbreviated terms
For the purposes of this document, the following symbols and abbreviated terms apply.
APR Architectural Paint Research
CIELAB, Lab, L*a*b Color space defined by the CIE (Commission Internationale de l'Éclairage), based
on one channel for Luminance (lightness) (L) and two color channels (a and b).
5 General
...