This article is about building materials. Lath is also a surname to many families Marwari and Punjabi in India. The Marwari (also variously Marvari, Marwadi, Marvadi) is a language originating in the Western Indian state of Rajasthan, but is also found in the neighboring state of Gujarat and in Eastern Pakistan. ... Punjabi (sometimes spelled Panjabi) is the language of the Punjab regions of India and Pakistan. ...

Lath is any material that is used to span interstices between structural framing, and create a smooth surface for a plasterer to apply mortar. In older buildings, thin strips of wood were used, but any wood or metal can be used, as well as gypsum. This article is about the building material. ... Mortar holding bricks. ... A tree trunk as found at the Veluwe, The Netherlands Wood derives from woody plants, notably trees but also shrubs. ... Hot metal work from a blacksmith In chemistry, a metal (Greek: Metallon) is an element that readily forms ions (cations) and has metallic bonds, and metals are sometimes described as a lattice of positive ions (cations) in a cloud of electrons. ... Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. // Chemical structure Gypsum from New South Wales, Australia Heating gypsum above approximately 150°C (302°F) partially dehydrates the mineral by driving off exactly 75% of the water contained in its chemical structure. ...

Gypsum was one of more commonly used materials. Gypsum lath consists of gypsum plaster sandwiched between two sheets of absorbent paper. It was invented in 1910, and multiple variations were developed in the 1930s. Gypsum was safer than wood lath as it wasn't combustible, was easier to use, and gave better results. 1910 (MCMX) was a common year starting on Saturday (see link for calendar). ... // Events and trends The 1930s were described as an abrupt shift to more radical lifestyles, as countries were struggling to find a solution to the global depression. ...

The lath and plaster method declined in the 1950s, as it was replaced by the more efficient drywall. Lath and plaster is a somewhat outdated building process used mainly for interior walls. ... // Events and trends This map shows two essential global spheres during the Cold War in 1959. ... Drywall, the ubiquitous interior building material. ...