Planar distortion of canvas

Ingo Carow <s0162653 [at] fhtw-berlin__de> writes

>... there are several ways of establishing
>a microenvironment on single paintings. An interesting method was
>described in an article from E. Bosshard "Paintings: "The (show) case
>for passive climate control" in: Simon Knell (1997), Care of
>collections, London, New York
>
>Here the author designed showcases for single paintings. The object
>is then framed with the case, which is made from glass and plexiglas
>with bagged silica gel behind the painting....

Note that in all following papers or articles it is recommended
*not* to include any additional man-made buffering material to
microclimate boxes for paintings on panel or canvas. Silica gel,
Art-Sorb etc. may have an adverse influence on the EMC (equilibrium
moisture content) of the enclosed object.

    J. Wadum, IJ. Hummelen, B.A.H.G. Jutte, W. Kragt, L. Sozzani,
    "Research Programme Microclimates: Paintings on Panel and
    Canvas", in Preventive Conservation. Practice, Theory and
    Research; Summaries of the Posters at the Ottawa Congress
    (1994). Quebec.

    J. Wadum, "Microclimate-Boxes for Panel Paintings", in Die Kunst
    zu verpackena, 2e Symposium Bundesverband Deutscher
    Diplom-RestauratorInnen 19. November 1994 Koln, ed. U.H.
    Vielhaber, Cologne 1998-22-24.

    J. Wadum, "Microclimate Boxes for Paintings: A Manual", in
    ICOM-CC 11th Triennial Meeting Edinburgh Preprints. Poster
    Summaries, vol II (1996) 984. London.

    L.S.G. Sozzani, "An economical design for a microclimate vitrine
    for paintings using the picture frame as the primary housing",
    in JAIC 36 (1997):95-107.

    J. Wadum, "Microclimate Boxes for Panel Paintings", in The
    Structural Conservation of Panel Paintings. Proceedings of a
    Symposium at the J. Paul Getty Museum, April 1995, eds. K.
    Dardes & A. Rothe. Los Angeles (1998) 497-524.

    J. Wadum, "Eine Mikroklimavitrine fur feuchtigkeitsempfindliche
    Holztafeln und leimdoublierte Gemalde", in Restauro 2(2000)
    [forthcoming].

Only in large vitrines displaying smaller objects (i.e. there is a
large air to object volume) are buffer material recommendable.

Jorgen Wadum
Chief Conservator
Royal Cabinet of Paintings Mauritshuis
P.O. Box 536
2501 CM  The Hague
+31 70 302 3461
Fax: +31 70 365 3819

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                  Conservation DistList Instance 13:30
               Distributed: Wednesday, November 17, 1999
                       Message Id: cdl-13-30-002
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