10.6092/issn.1973-9494/1406
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1973-9494
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Andrea Natali
Conservation Science in Cultural Heritage
Some considerations on conservation and restoration in contemporary art
Text.Serial.Journal
https://conservation-science.unibo.it/
8
Articles
2009-04-17
2008-04-17
2015-11-02
187-197
CSCH
Andrea Natali
2008
10.6092/issn.1973-9494/1406
187
1973-9494
en
197
Some considerations on conservation and restoration in contemporary art
https://conservation-science.unibo.it/article/download/1406/775
8
S
    OME CONSIDERATIONS ON CONSERVATION
    AND RESTORATION IN CONTEMPORARY ART


Andrea Natali
Dipartimento di Storie e Metodi per la Conservazione dei Beni Culturali
Alma Mater Studiorum Università di Bologna (sede di Ravenna)




1. What is meant by conservation and restoration in contemporary art

    The “Code” of cultural and environmental heritage states in Article 29, under the point
on conservation that:
1. The conservation of cultural heritage is ensured by means of a coherent, co-ordinat-
    ed and programmed activity of study, prevention, maintenance and restoration.
2. Prevention refers to a series of actions suitably carried out to limit situations of risk
    related to works of cultural heritage in their own context.
3. Maintenance refers to a series of actions and interventions to keep the condition of
    the work of cultural heritage under control and to maintain its integrity, functional effi-
    ciency and identity, inclusive of all its parts.
4. Restoration means the direct intervention on the work by using a set of operations




                                                                                                    Conservation Science in Cultural Heritage, 8/2008
    aimed at maintaining its material integrity and the reclamation of the work itself, its
    protection and the transmission of its cultural value. In the case of buildings situated
    in zones declared at risk of earthquakes based on the legislation in force, restoration
    involves structural improvement [1].
    Therefore conservation includes the study, prevention, maintenance and as far as it
is relevant, the restoration of the cultural work.
    It is more complex to define contemporary art by placing it in a determinate time peri-
od, rather than defining the actual concept.
    When one speaks of contemporary art one refers to the artistic output of a certain
period to the present day. Such time limits for some art historians go back to the begin-
ning of the second half of the 19th century or to be more precise with the birth of the
Impressionist Movement which the academic art world had started to question. Other
experts consider works of art produced during the 20th century to be the time limit; and
for others again it is the post Second World War period. These various interpretations do

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                                                                                      not help in resolving the problem of conservation and restoration of works of contempo-
                                                                                      rary art. Therefore, it is only right to search for an alternative way of classifying them.

                                                                                      2. It is not chronological classification that is required, but material

                                                                                         The operation of conservation and restoration must be considered a critical action
                                                                                      and it is precisely the interpretation of restoration as a “critical” action that Cesare
                                                                                      Brandi’s “theory” is based on [2]: in his opinion, a view based on the recognition and
                                                                                      respect for the work of art, both in its historicity and aesthetic values is affirmed.
                                                                                         Brandi states: “Restoration is the methodological moment of recognition of the work
                                                                                      of art, both in its physical composition and in its aesthetic and historical bipolarity, before
                                                                                      being transmitted into the future”.
                                                                                         Then:
A. Natali - Some considerations on conservation and restoration in contemporary art




                                                                                         “The physical composition of the work must necessarily have precedence, because it
                                                                                      represents the physical place where the image was manifested. It ensures the transmis-
                                                                                      sion of the image into the future, thus guaranteeing its reception by the human conscience.
                                                                                      So, if from the point of view of the recognition of the work of art as such, the artistic side
                                                                                      has absolute pre-eminence, as long as this recognition is aimed at preserving the future
                                                                                      of that possible revelation, physical composition becomes of primary importance”.
                                                                                         This leads to defining a limit for operations of reconstruction that wipe out any histor-
                                                                                      ical stratifications and consequently intensifying conservation based on “preventive”
                                                                                      restoration. “Preventive” restoration is the result of Brandi’s conservative vision and
                                                                                      includes all maintenance procedures able to limit degradation and thus avoid or postpone
                                                                                      any restoration.
                                                                                         Brandi also indicates the aim of the intervention, emphasizing that “only the material
                                                                                      with which the work of art is made, is restored [2].
                                                                                         On the basis of these affirmations, which are still shared today and found in many
                                                                                      documents about conservation and restoration, chronological distinction ceases to be
                                                                                      valid for contemporary works of art as it is not always clear. Therefore, it has been put
                                                                                      aside in preference to a view which takes into consideration the material with which the
                                                                                      “object” of contemporary art is made. It is clearly fundamental, then, to possess a knowl-
                                                                                      edge of the materials used for artistic production, their characteristics and properties and
                                                                                      their conservation environment. These operations are written in the “Allegato D, Istruzioni
                                                                                      per l’esecuzione di interventi di conservazione e restauro su opera a carattere plastico,
                                                                                      pittorico, grafico e d’arte e di applicata della Carta della conservazione e del restauro
                                                                                      degli oggetti d’arte e di cultura” 1987, where even if there are no specific references to

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artefacts mentioned in the present text, there are references that must be considered:
“The first thing to do in any intervention on any work of art or historical is to make an accu-
rate investigation of the state of conservation of the object itself and the environmental
conditions in which it is kept. This examination includes verifying and as far as possible
reconstructing historically, the climate and microclimate where the object was, and is
kept. For this reason, the historical documentation of the data given by the instruments
about changes in the temperature, pressure, hygrometry and also in the phototropism
(curving of vegetable or even animal parts towards a light source) of the environment
where it is kept, as well as those connected with the whole building (starting with the rel-
ative movement of the winds).The documents concerning the chemical composition of
the atmosphere is obviously fundamental in identifying the source and the nature of any
possible polluting elements. Finally, the information regarding the material composition of
the environmental container (structures, coverings, furnishings, etc.), is also important.
As for the condition of conservation intrinsic to the object, both the technical methods and
materials used, must be checked, distinguishing between the original and spurious parts,
or those which have been added, and roughly determining their respective dating. When
possible an examination of the internal condition of the object should be carried out. This
examination, in the first instance, is meant to be conclusive, but however should be cor-
roborated, when possible, by further tests of a physical, chemical and numerical nature
and must be carried out in close collaboration with experts of the various sectors and
accurately recorded in the journal of restoration” [3].
    Nevertheless, this view does not completely resolve the problems related to the con-
servation and restoration of contemporary works of art.
    According to Heinz Althofer, one of the most reliable restorers of contemporary art:
“Nowadays, it is not enough to be knowledgeable about materials and have a good com-                     Conservation Science in Cultural Heritage
mand of restoration techniques to do a professional job. It is now necessary to delve
deeply into the intellectual world and into the artist’s philosophy; otherwise the starting
point for the restoration would be wrong.
    After all, the same materials and the same techniques have always been used to paint
Madonnas, emperors and socialists: background, surface, colour, varnish, while the idea
that dominates the representation has had little influence on the materials used. In present-
day contemporary art, the materials themselves express artistic subjectivity. They are not
simply theoretical considerations, similar for example to the question of neutral retouching
or hatching, but conditions of great importance. If they are not taken into account, the work
will not only be annihilated in its physical existence, but in its spiritual existence as well” [4].

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                                                                                         In contemporary art, next to traditional techniques such as oil, tempera, fresco, and
                                                                                      marble, bronze and wood sculptures, restoration has now become a standard practice.
                                                                                      Artistic production today, makes use of non-conventional techniques: monochrome pic-
                                                                                      tures, glossy or mirror-like surfaces, aggregates of different materials, smooth or porous,
                                                                                      rigid or soft supports, installations, poor and perishable materials such as rusty iron, card-
                                                                                      board, straw, wax, dried leaves, just to give some examples used in the variegated and
                                                                                      inexhaustible panorama of contemporary works [5].
                                                                                         Another type of artefact that must be considered is objects of Contemporary Design
                                                                                      or “functional sculptures”: exclusive pieces of furniture or models reproduced in limited
                                                                                      numbers, in materials borrowed from industrial manufacturing and considered to be, in
                                                                                      the light of the latest quotations, works of art.
                                                                                         So, it follows that an interdisciplinary approach to the operation of restoration must
A. Natali - Some considerations on conservation and restoration in contemporary art




                                                                                      necessarily involve experts from different sectors, with experience both of a historical-
                                                                                      artistic and technical character. This, if necessary must include the artist himself, if living,
                                                                                      otherwise the institutions in charge of maintaining and handing down his memory to pos-
                                                                                      terity. In this way, there is a complete vision of the techniques and materials used. Of
                                                                                      greater importance, with respect to works produced using traditional techniques, is the
                                                                                      knowledge of new materials (plastic materials, synthetic and semi-synthetic polymeric
                                                                                      materials such as painting binders, acrylic colours, etc.). This knowledge must be used in
                                                                                      collaboration with the manufacturers and research done on compatibility and curability,
                                                                                      using artificial aging techniques when there is no reliable way of checking on the said
                                                                                      materials from past experience and history [6-11].

                                                                                      3. Is it right to intervene on a contemporary work of art?

                                                                                         Once the extent of the intervention has been assessed and the methodological
                                                                                      approach to the conservation and restoration has been established, it is advisable to set
                                                                                      down the specific problems to be faced for contemporary art.
                                                                                         Works of art produced in the nineteen-hundreds have started a debate about the con-
                                                                                      cept of “durability”, that is the time it takes for the work of art to transmit to our times and
                                                                                      to our perception, the idea of eternity, which classical art has handed down to us, togeth-
                                                                                      er with the model of conservative intervention. The artist who worked following a tradi-
                                                                                      tional path had detailed knowledge of the materials he used. Artistic techniques devel-
                                                                                      oped slowly through the centuries and were defined by the schools and studios. Their
                                                                                      evolution was affected only by rare events caused by commercial aspects connected for
                                                                                      example, to a new pigment or a new resin introduced from the East. It was the artist him-

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self and the assistants in his studio who prepared
the colours. The “studio secrets” were only minor
variations or a particular aspect of a practice exer-
cised following the rules of the art world, which
had codes of its own and knew exactly what the
concept of durability was.
   From this point of view the relationship with
contemporary art becomes problematic: the voca-
tion for the ephemeral can manifest itself as the
adoption of perishable materials. Restoration
identifies, in an antique work of art, abrasions,
“crettature”, changes in colour, burns as unmis-
                                                         Figura 1. Alberto Burri, Big Red
takable signs of alteration. Now, on the contrary,       P18, 1964, Rome, National Gallery
one must come face to face with the use of a             of Modern Art [12].
material, which is already worn or which in some
cases is deteriorated, because it is part of the desired effect (fig. 1-5) [5].
   In these cases a conservative approach is not always the right one: trying to keep the
original materials, even if they are degraded, a condition deliberately desired by the
authors, can cause the loss of that aesthetic instance which is fundamental to the work
                                         of art and does not consent direct enjoyment of
                                         the work (referring to the possibility of freezing
                                         some works, in particular those by Roth).



                                                                                                Conservation Science in Cultural Heritage




Figura 2. Alberto Burri, Big wood
G59, 1959, wood, acrilic and com-
bustion on canvas, 200 × 185 cm,                    Figura 3. Alberto Burri, Sack and red,
Rome, National Gallery of Modern                    1954, sack and oil on canvas, 86 × 100
Art [12].                                           cm, London, Tate Gallery [13].

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                                                                                                                              Duchamp’s ready-made, for example, are
                                                                                                                           works born from the manipulation of industrial
                                                                                                                           objects extrapolated from daily life and placed in
                                                                                                                           an art context. The replica of a ready-made using
                                                                                                                           the same materials transmits the same message
                                                                                                                           as the original. This is an essential point also due
                                                                                                                           to the consequences seen from a conservative
                                                                                                                           point of view, because it introduces the controver-
                                                                                                                           sial theme of the “identity” of the work in connec-
                                                                                                                           tion with its reproducibility. Can the work be
                                                                                                                           allowed to be substituted, wholly or in part for con-
                                                                                                                           servation reasons, without losing it significance?
A. Natali - Some considerations on conservation and restoration in contemporary art




                                                                                                                              In the case of works with a predominantly con-
                                                                                                                           ceptual value, possessing an independent identity
                                                                                      Figure 4. Lucio Fontana, Spatial
                                                                                      concept, 1960, 116 × 90 cm, Trento   with respect to the object itself, as in works made
                                                                                      and Rovereto Museum of Modern        up of an assemblage of materials from industrial
                                                                                      and Contemporary Art [14].
                                                                                                                           manufacturing and which, having deteriorated
                                                                                                                           parts, interferes with the use and the functionality of
                                                                                                                           the work, the substitution of parts is acceptable
                                                                                                                           even to the extent of replacing the model entirely,
                                                                                                                           preserving the originals, restored for purposes of
                                                                                                                           documentation.
                                                                                                                              This kind of operation defends the artistic
                                                                                                                           message and thus, the identity of the work at the
                                                                                                                           expense of the originality of the materials. The
                                                                                                                           problem in such cases consists in the difficulty of
                                                                                                                           procuring spare parts if as often happens, they
                                                                                                                           are no longer produced. The same applies to
                                                                                                                           works of Kinetic art or Video Art made from
                                                                                                                           motors, mechanical and electronic devices and
                                                                                                                           monitors, when replacements are needed for
                                                                                                                           some parts which no longer function or are
                                                                                      Figura 5. Lucio Fontana, Awaited     irreparable.
                                                                                      spatial concept, 1963, waterpaint-
                                                                                      ing on canvas, 60 × 46 cm, Private      In this case too, the same materials chosen by
                                                                                      collection [15].                     the artist should be used. However, if after some

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years, many products are no longer produced and so become unavailable, the possibility of
replacing them with similar, but more stable products can be considered.
   Another important challenge for Conservation is connected to “ephemeral” art: hap-
penings, Land-Art, performance, temporary installations, whose memory is entrusted
exclusively to films or photographs.
   The extraordinary condition of being untransportable, jeopardizes the age-old custom
of keeping works in museums and changes the mechanism for commercially promoting
and diffusing works.
   In addition keeping the memory of this kind of art alive represents a challenge for con-
servation due to the impossibility of restoring it.
   The only desirable attitude to take is that of making a carefully detailed document of the
event and of course the conservation of the supporting equipment which reproduces it. The
concern that such supports are not adequately preserved is manifested in Michele Cordaro’s
statement: “…show that such a kind of documentation about recent artistic experiences,
when the object is absent does not prolong the life of the event very much. It certainly does
not ensure periods of time long enough to consent at least the historicization of the event
and for it to be put into perspective, on a scale of relations and values within the period of
time which produced it. Finally, one has to consider that the use of such supports is, in trends
which are anything but unimportant for contemporary artistic experience, a direct undertak-
ing and a determined choice. This is the case in artists’ films or in videos, often made using
amateur instruments or in the widespread use of photographic media in illustrated compo-
sitions, where even devices for the immediate developing and printing of the Polaroid cam-
era kind are used. The same happens in the sector of Computer Art and electronic image
elaboration. Here the problem is how to preserve both the support on which the work is
impressed (photograph, film, videotape, CD, DVD, etc.) and the system for reading these              Conservation Science in Cultural Heritage
supports linked to industrial manufacturing, which changes with time and evolves.
   Another trend reminiscent of the ephemeral is the so-called Eat Art, which designs the
metamorphosis of the work the spectator sees using foods (chocolate, sugar, bread…).
These materials, placed inside a showcase are devoured by insects and micro-organ-
isms: the event consists in the fact that the material progressively changes its shape.
   In this case, it is not possible to think of intervening to prevent deterioration, because
it would involve the non-realisation of the work. The task of conservation starts with the
study of the manufacturing characteristics and deterioration of the chosen material to
identify the best environmental conditions to preserve it, establish the most suitable
cleaning method and the most efficient way of eliminating the insects.

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                                                                                         Another hypothesis for conservation which has been accepted, foresees the freezing
                                                                                      of the work which would mean avoiding the disinfection treatment and therefore the use
                                                                                      of dangerous products from a hygienic-sanitary point of view. The smallest intervention
                                                                                      on the other hand could safeguard the simple “perception” of edibility of the material with
                                                                                      which it is made without the use of invasive methods [16].
                                                                                         In this brief examination, examples of the various forms of contemporary art have
                                                                                      been proposed to give an idea about the different kinds of support and about the difficul-
                                                                                      ty of intervention. On the other hand, the substitution of materials with others of the same
                                                                                      kind or longer-lasting, can involve the loss of its historical appeal. The abandonment of
                                                                                      the representation, the adoption of an everyday object and/or a technological element,
                                                                                      crossing the confines of “creating art” in the registration of art-events tied to the moment
                                                                                      of their happening, all lay down the conditions for a restoration which is the seeking of an
A. Natali - Some considerations on conservation and restoration in contemporary art




                                                                                      intention rather than a hypothesis on the state of the material.
                                                                                         It can be deduced then, that there cannot be a standard procedure of intervention for
                                                                                      contemporary works of art – which, in any case, could only be implemented with great dif-
                                                                                      ficulty in such a vast and varied field – however, there could be a methodology which has
                                                                                      as its basis a detailed study of the materials employed and of the philosophy which is at
                                                                                      the basis of their use.

                                                                                      4. Who must intervene?

                                                                                         The answer to this question can seem banal. The work must be done by restores with
                                                                                      experience gained in the right institutions such as universities, ICR and OPD, on the basis
                                                                                      of in-depth studying of historical-artistic-matter subjects and diagnostic tests to assess
                                                                                      the material consistency, the state of conservation and the environmental location of the
                                                                                      works of art. However, for contemporary art, there is a particular problem as the inventor
                                                                                      and author of the work of art is in most cases, living. Is it right to ask the artist if he knows
                                                                                      the philosophy behind its realization, the materials and techniques used to create it, to
                                                                                      intervene on his own work?
                                                                                         In this respect, it is evident that intervening on his own deteriorated work, the artist
                                                                                      could modify it conceptually and materially in light of an artistic career in which he has
                                                                                      had a leading role through the years. Such an intervention, would lead to the creation
                                                                                      of another work, resulting in a contemporaneous falsification of the pre-existing one:
                                                                                      becoming a work of art (following Brandi’s definition) and a part of cultural heritage
                                                                                      (having acquired a value for the civilisation which produced it). It is also true that the
                                                                                      possibility of being able to collaborate with the living artist represents a great opportu-

                                  194
nity for the restorer. By asking the right questions relative both to the aesthetics, which
is the basis for the creative path being followed to achieve the end result, and to the
materials and techniques used, he can come to an agreement based on his own tech-
nical knowledge, about the choices necessary to achieve the best way of restoring the
work.

Bibliography
[1] Decreto Legislativo 22 gennaio 2004, n. 42 “Codice dei beni culturali e del paesag-
    gio, ai sensi dell’articolo 10 della legge 6 luglio 2002, n. 137” Gazzetta Ufficiale n. 45
    del 24 febbraio 2004, Supplemento Ordinario n. 28.
[2] BRANDI C. 1977, Teoria del restauro, Torino, Einaudi.
[3] Carta della conservazione e del restauro degli oggetti d’arte e di cultura, 1987.
[4] Il restauro della arte contemporanea in “Conservare l’arte contemporanea”, Atti del
    Convegno di Ferrara delle 1991, Nardini, Firenze 1992.
[5] CHIANTORE O., RAVA A. 2005, Conservare l’arte contemporanea, Mondatori Electa.
[6] LORUSSO S. 2002, La diagnostica per il controllo del sistema manufatto-ambiente,
    Bologna, Pitagora Editrice.
[7] LORUSSO S. 2000, L’ambiente di conservazione dei beni culturali, Bologna,
    Pitagora Editrice.
[8] LORUSSO S. 2000, Conservazione e trattamento dei materiali costituenti i Beni
    Culturali, Bologna, Pitagora Editrice.
[9] LORUSSO S., MATTEUCCI C., NATALI A. 2007, Anamnesi storica, indagini analiti-
    co-diagnostiche e monitoraggio ambientale: alcuni casi di studio nel settore dei beni
    culturali, Bologna, Pitagora Editrice.
[10] LORUSSO S, NATALI A. 2007, Le problematiche tecniche della conservazione, in N.
     LABANCA, L. TOMMASSINI, Forze armate e beni culturali. Distruggere, costruire,
     valorizzare, Milano, Edizioni Unicopli, 261-281.
[11] NATALI A. LORUSSO S. 2007, Lo studio e il controllo del “sistema: ambiente/manu-                  Conservation Science in Cultural Heritage
     fatto di interesse storico-documentale” Casi di studio, in M. PLOSSI, A. ZAPPALÀ (a
     cura di) Libri e Documenti / Le scienze per la conservazione e il restauro, Mariano
     del Friuli, Edizioni della Laguna.
[12] http://www.griseldaonline.it
[13] http://www.mart.trento.it/UploadImgs/1677_3_Fontana___Concetto_spaziale.jpg
[14] http://artmagazine.arcadja.it/wpcontent/uploads/image/Lucio%20Fontana.jpg
[15] www.rivistadiequipeco.it
[16] GRILLO V., Conservare l’ Arte Contemporanea, http://www.luxflux.net/n11/drills1.htm

Summary
A number of aspects and problems are discussed which refer to conservation and restoration in con-
temporary art. The need to classify contemporary art objects not chronologically but materially is

                                                                                                     195
                                                                                      obvious, which as well as using traditional techniques utilize new materials made available by indus-
                                                                                      trial research. Thus the importance of an interdisciplinary approach to the problem, not only involv-
                                                                                      ing the experts, who have the historical-artistic and technical expertise, but the authors of the works
                                                                                      in question too (and the manufacturers of the constituent materials of the said works), in order to be
                                                                                      able to have a complete informative view of the corresponding characteristics and properties.

                                                                                      Riassunto
                                                                                      Vengono discussi alcuni aspetti e problematiche che si riferiscono alla conservazione e al restauro
                                                                                      nell’arte contemporanea. Si fa presente l’esigenza di una classificazione non cronologica bensì
                                                                                      materica degli oggetti d’arte contemporanea che, oltre ad avvalersi di tecniche tradizionali, utilizza-
                                                                                      no nuovi materiali resi disponibili dalla ricerca industriale. Di qui l’importanza di un approccio inter-
                                                                                      disciplinare al problema, che coinvolga non solo esperti con competenze di carattere sia storico-arti-
                                                                                      stico che tecnico ma anche gli autori delle opere in questione (nonché le case produttrici dei mate-
                                                                                      riali costituenti le opere stesse), allo scopo di poter disporre così di un quadro informativo completo
                                                                                      sulle corrispondenti caratteristiche e proprietà.


                                                                                      Résumé
A. Natali - Some considerations on conservation and restoration in contemporary art




                                                                                      On discute certains aspects et problématiques qui se réfèrent à la conservation et à la restauration
                                                                                      dans l’art contemporain. On fait remarquer l’exigence d’une classification non chronologique mais
                                                                                      matiériste des objets d’art contemporain qui, outre à se servir de techniques traditionnelles, utilisent
                                                                                      des nouveaux matériaux rendus disponibles par la recherche industrielle. D’ici l’importance d’une
                                                                                      approche interdisciplinaire au problème, qui implique non seulement des experts avec des compé-
                                                                                      tences de caractère tant historico-artistique que technique mais aussi les auteurs des oeuvres en
                                                                                      question (ainsi que les maisons de production des matériaux constituant les oeuvres mêmes), dans
                                                                                      le but de pouvoir disposer ainsi d’un cadre d’information complet sur les caractéristiques et proprié-
                                                                                      tés correspondantes.


                                                                                      Zusammenfassung
                                                                                      Es werden einige Aspekte und Schwierigkeiten im Zusammenhang mir der Erhaltung und der
                                                                                      Restaurierung in der zeitgenössischen Kunst in Betracht gezogen. Dabei wird auf die
                                                                                      Notwendigkeit nicht von einer chronologischen sondern von einer materiellen Klassifizierung von
                                                                                      Gegenständen in der zeitgenössischen Kunst hingewiesen, solche Klassifizierung soll sich auf tra-
                                                                                      ditionellen Techniken stützen aber sie muss auch neue Materialien aus der Industrieforschung ver-
                                                                                      wenden. Daher ist ein interdisziplinärer Ansatz zum Problem von wesentlicher Bedeutung, der nicht
                                                                                      nur Experte mit historischen-künstlichen oder technischen Kompetenzen mit einbezieht, sondern
                                                                                      auch die Autoren der Werke (und die Produktionsgesellschaften der Materialien, aus denen die
                                                                                      Werke bestehen). Auf diese Art und Weise kann man eine vollständige Übersicht über die
                                                                                      Eigenschaften der Werke haben.


                                                                                      Resumen
                                                                                      Se comentan algunos aspectos y problemáticas en relación con la conservación y restauración en
                                                                                      el arte contemporáneo. Hay que notar la necesidad de una clasificación, no cronológica sino maté-
                                                                                      rica, de los objetos de arte contemporáneo que, además de recurrir a técnicas tradicionales, utilizan
                                                                                      los nuevos materiales que la investigación industrial pone a disposición. De ahí la importancia de un
                                                                                      enfoque interdisciplinar del problema, que implique no sólo a los expertos con competencias de
                                                                                      carácter tanto histórico-artísticas como técnicas, sino también a los autores de las obras de que se
                                                                                      trate (así como a las casas fabricantes de los materiales que constituyen las obras), a fin de poder
                                                                                      contar así con un cuadro informativo completo acerca de las características y propiedades corres-
                                                                                      pondientes.


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