Intonaco

Intonaco

Intonaco is an Italian term for the final, very thin layer of plaster on which a fresco wall painting is painted. The painting is done whilst the plaster is still wet, in order to allow the pigment to penetrate into the intonaco itself. An earlier layer, called "arriccio", is laid slightly coarsely to provide a key for the intonaco, and must be allowed to dry, usually for some days, before the final very thin layer is applied and painted on. [Ugo Procacci, in "Frescoes from Florence",pp. 15-25 1969, Arts Council, London, gives a full account of the process.] In Italian the term intonaco is also used much more generally for normal plaster or mortar wall-coatings in buildings.

Intonaco is traditionally a mixture of sand (with granular dimensions less than two millimeters) and a binding substance.

Types of intonaco

Different types of intonaco are classified based on the binding material used:
* Intonaco based on lime, where the only binding substance is hydrated lime
* Intonaco lime/cement, where the binding element is a mixture of hydrated lime with Portland cement, with a majority of lime
* Intonaco cement/lime, where the binding element is a mixture of hydrated lime, and Portland cement, with a majority of Portland cement
* Intonaco with a plaster base, where the binding element is exclusively plaster

The sand utilized in the intonaco can be limestone or silicate, taken from a natural source such as a river or from sand that is pulverized.

Types of stabilizers

Intonaco can be stablized using:
* Lime
* plaster
* Calcium-sulfate based plaster
* Terracotta-based cement

References


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Look at other dictionaries:

  • intonaco — /in tɔnako/ s.m. [der. di intonacare ] (pl. ci, meno com. chi ). 1. (edil.) [strato di malta che si applica sulla superficie di muri e pareti] ▶◀ intonacatura, (tosc.) mestica, (non com.) scialbatura. ⇓ rinzaffo, sbruffatura. 2. (fig., scherz.)… …   Enciclopedia Italiana

  • intonaco — in·tò·na·co s.m. 1a. AD strato di malta che si applica su una superficie muraria per renderla liscia e uniforme o per isolarla dagli agenti atmosferici: rinnovare, dare l intonaco alle pareti 1b. TS pitt. sottile e omogeneo strato di calcina da… …   Dizionario italiano

  • intonaco — /in ton euh koh , taw neuh /; It. /een taw nah kaw/, n., pl. intonacos, intonaci It. / chee/. (formerly in fresco painting) the last and finest coat of plaster, usually applied in sections and painted while still damp with colors ground in water… …   Universalium

  • intonaco — {{hw}}{{intonaco}}{{/hw}}s. m.  (pl. ci  o chi ) Strato di malta, di piccolo spessore, con cui si ricoprono, per finitura, le superfici di muri e soffitti …   Enciclopedia di italiano

  • intonaco — pl.m. intonaci, intonachi …   Dizionario dei sinonimi e contrari

  • intonaco —    The final layer of plaster on which a fresco is painted …   Glossary of Art Terms

  • intonaco — s. m. intonacatura, rinzaffo, rinzaffatura CONTR. scalcinatura, scrostatura …   Sinonimi e Contrari. Terza edizione

  • intonaco — in·to·na·co …   English syllables

  • intonaco — ə̇n.ˈtänəˌkō, tȯn noun ( s) Etymology: Italian, from intonacare to coat with plaster, from (assumed) Vulgar Latin intunicare, from Latin in in (II) + tunica tunic, coating : the f …   Useful english dictionary

  • Fresque — de Cimabue à Assise (Italie) Fresque à la Chapelle Sainte …   Wikipédia en Français

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