Saturday, July 6, 2024

Selected Fresco Palette for Permanent Frescoes
Art Resource

Marie-Therese Wisniowski

Preamble
This is the thirty-fifth post in a new Art Resource series that specifically focuses on techniques used in creating artworks. For your convenience I have listed all the posts in this new series below:
Drawing Art
Painting Art - Part I
Painting Art - Part II
Painting Art - Part III
Painting Art - Part IV
Painting Art - Part V
Painting Art - Part VI
Home-Made Painting Art Materials
Quality in Ready-Made Artists' Supplies - Part I
Quality in Ready-Made Artists' Supplies - Part II
Quality in Ready-Made Artists' Supplies - Part III
Historical Notes on Art - Part I
Historical Notes on Art - Part II
Historical Notes on Art - Part III
Historical Notes on Art - Part IV
Historical Notes on Art - Part V
Tempera Painting
Oil Painting - Part I
Oil Painting - Part II
Oil Painting - Part III
Oil Painting - Part IV
Oil Painting - Part V
Oil Painting - Part VI
Pigments
Classification of Pigments - Part I
Classification of Pigments - Part II
Classification of Pigments - Part III
Pigments for Oil Painting
Pigments for Water Color
Pigments for Tempera Painting
Pigments for Pastel
Japanese Pigments
Pigments for Fresco Painting - Part I
Pigments for Fresco Painting - Part II
Selected Fresco Palette for Permanent Frescoes
Properties of Pigments in Common Use

There have been another one hundred and thirteen posts in a previous Art Resource series that have focused on the following topics:
(i) Units used in dyeing and printing of fabrics;
(ii) Occupational, health & safety issues in an art studio;
(iii) Color theories and color schemes;
(iv) Optical properties of fiber materials;
(v) General properties of fiber polymers and fibers - Part I to Part V;
(vi) Protein fibers;
(vii) Natural and man-made cellulosic fibers;
(viii) Fiber blends and melt spun fibers;
(ix) Fabric construction;
(x) Techniques and woven fibers;
(xi) Basic and figured weaves;
(xii) Pile, woven and knot pile fabrics;
(xiii) Durable press and wash-and-wear finishes;
(xvi) Classification of dyes and dye blends;
(xv) The general theory of printing.

To access any of the above resources, please click on the following link - Units Used in Dyeing and Printing of Fabrics. This link will highlight all of the one hundred and thirteen posts in the previous a are eight data bases on this blogspot, namely, the Glossary of Cultural and Architectural Terms, Timelines of Fabrics, Dyes and Other Stuff, A Fashion Data Base, the Glossary of Colors, Dyes, Inks, Pigments and Resins, the Glossary of Fabrics, Fibers, Finishes, Garments and Yarns, Glossary of Art, Artists, Art Motifs and Art Movements, Glossary of Paper, Photography, Printing, Prints and Publication Terms and the Glossary of Scientific Terms. All data bases in the future will be updated from time-to-time.

If you find any post on this blog site useful, you can save it or copy and paste it into your own "Word" document for your future reference. For example, Safari allows you to save a post (e.g. click on "File", click on "Print" and release, click on "PDF" and then click on "Save As" and release - and a PDF should appear where you have stored it). Safari also allows you to mail a post to a friend (click on "File", and then point cursor to "Mail Contents On This Page" and release). Either way, this or other posts on this site may be a useful Art Resource for you.

The new Art Resource series will be the first post in each calendar month. Remember - these Art Resource posts span information that will be useful for a home hobbyist to that required by a final year University Fine-Art student and so undoubtedly, some parts of any Art Resource post may appear far too technical for your needs (skip those mind boggling parts) and in other parts, it may be too simplistic with respect to your level of knowledge (ditto the skip). The trade-off between these two extremes will mean that Art Resource posts will be hopefully useful in parts to most, but unfortunately may not be satisfying to all!

There have been another one hundred and thirteen posts in a previous Art Resource series that have focused on the following topics:
(i) Units used in dyeing and printing of fabrics;
(ii) Occupational, health & safety issues in an art studio;
(iii) Color theories and color schemes;
(iv) Optical properties of fiber materials;
(v) General properties of fiber polymers and fibers - Part I to Part V;
(vi) Protein fibers;
(vii) Natural and man-made cellulosic fibers;
(viii) Fiber blends and melt spun fibers;
(ix) Fabric construction;
(x) Techniques and woven fibers;
(xi) Basic and figured weaves;
(xii) Pile, woven and knot pile fabrics;
(xiii) Durable press and wash-and-wear finishes;
(xvi) Classification of dyes and dye blends;
(xv) The general theory of printing.

To access any of the above resources, please click on the following link - Units Used in Dyeing and Printing of Fabrics. This link will highlight all of the one hundred and thirteen posts in the previous a are eight data bases on this blogspot, namely, the Glossary of Cultural and Architectural Terms, Timelines of Fabrics, Dyes and Other Stuff, A Fashion Data Base, the Glossary of Colors, Dyes, Inks, Pigments and Resins, the Glossary of Fabrics, Fibers, Finishes, Garments and Yarns, Glossary of Art, Artists, Art Motifs and Art Movements, Glossary of Paper, Photography, Printing, Prints and Publication Terms and the Glossary of Scientific Terms. All data bases in the future will be updated from time-to-time.

If you find any post on this blog site useful, you can save it or copy and paste it into your own "Word" document for your future reference. For example, Safari allows you to save a post (e.g. click on "File", click on "Print" and release, click on "PDF" and then click on "Save As" and release - and a PDF should appear where you have stored it). Safari also allows you to mail a post to a friend (click on "File", and then point cursor to "Mail Contents On This Page" and release). Either way, this or other posts on this site may be a useful Art Resource for you.

The new Art Resource series will be the first post in each calendar month. Remember - these Art Resource posts span information that will be useful for a home hobbyist to that required by a final year University Fine-Art student and so undoubtedly, some parts of any Art Resource post may appear far too technical for your needs (skip those mind boggling parts) and in other parts, it may be too simplistic with respect to your level of knowledge (ditto the skip). The trade-off between these two extremes will mean that Art Resource posts will be hopefully useful in parts to most, but unfortunately may not be satisfying to all!


Selected Fresco Palette for Permanent Frescoes
The palette for permanent frescoes must be especially resistant to the corrosive action of polluted air. All the pigments must be neutral, free from soluble salts and other impurities. For example, the following pigments have these properties.

White:
Slaked lime putty, Bianco san giovanni and neutral blanc fixe.

Bianco sangiovani
Bianco San Giovanni.

Black:
Mars black and Lampblack.

MarsBlack
Mars Black.

Red:
Indian red and light red.

Indian Red
Indian Red.

Blue:
Cobalt blue and cerulean blue.

Cerulean BLue
Cerulean Blue.

Green:
Chromium oxide and viridian.

Viridan
Viridian.

Yellow:
Mars Yellow.

Mars Yellow


Violet:
Mars Violet.

Mars Violet


It has been the practice of fresco painters from an early date to plaster a test panel and subject all their colors to a test of the suitability of their materials for the circumstances of the job in hand. Six months' exposure is considered adequate to determine whether or not a new color or a pigment from a new source is lime-proof.

Many colors not universally adopted or at present disputed, such as the cadmium lithopones, phthalocyanine blue, Hansa yellow lakes, and cobalt yellow, have been proposed as fresco colors. Some have shown promise in tests, but so far, data has been insufficient to form the basis for definite opinions. Painters who add lime or limewater to their colors favor pure slaked lime as white; those who depend solely on the capillary penetration of their pigments into the surface of the wall prefer a more inert, non-binding white. It is doubtful whether the Pozzuoli red mentioned by some writers is always authentic cementitious material; its color, however, is usually a highly desirable rosy shade of red. The cementing property of this substance is of doubtful or negative value. A number of perfectly suitable fresco colors, such as turquoise green, potter's ink, and Egyptian blues, are not available in some international markets. The cadmiums have been generally rejected for three reasons: there is doubt as to their permanent resistance to alkaline lime, their color effects in the dry state are very brilliant and usually out of key with the rest of the fresco palette, and they are all sulphides and therefore among those compounds sensitive to disintegration by minute amounts of mineral acids in the air. The cobalt violets currently on the market vary considerably in color and chemical properties and some are light-proof in other mediums but will fade when exposed in contact with lime; untried specimens should be tested under fresco conditions before adoption. Colors sold for enameling and other ceramic uses have bad paint-pigment properties and always contain added fluxing and refractory ingredients.

So far, no artist tests have been made, but the results of their industrial use, manganese violet, manganese blue, and phthalocyanine blue should prove to be lime-proof.


Reference:
[1] The Artist's Handbook of Materials and Techniques, R. Mayer (ed. E. Smith) 4th Edition, Faber and Faber, London (1981).

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