Stucco
construction material made of aggregates, a binder, and water
Stucco or render is a construction material made of aggregates, a binder, and water. Stucco is applied wet and hardens to a very dense solid. It is most commonly used as a decorative and protective cladding for exterior walls and canopies. Stucco can be applied over construction materials such as metal, expanded metal lath, concrete, cinder block, or clay brick and adobe for decorative, protective or structural purposes.
In English, "stucco" refers to a cladding for the outside of a building and "plaster" to a cladding for interiors. Other European languages, notably Italian, do not have the same distinction: In Italian, stucco means plaster, and serves for both.
Composition
The basic composition of stucco is lime, water, and sand.
The difference in nomenclature between stucco, plaster, and mortar is based more on use than composition. Until the latter part of the nineteenth century, it was common that mortar as well as plaster, which was used inside a building, and stucco, which was used outside, would consist of the same primary materials: lime and sand.
Animal or plant fibers were often added for additional strength.
The public source identifies “Stucco” as construction material made of aggregates, a binder, and water. This brief keeps that definition visible, then builds a research path around Stucco, construction and material.
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Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 16, 2026. The linked authority identifier is Q33526. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Stucco” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.