![]() A smooth, white finish coat goes on last. In three coat plastering it is standard to apply a second layer in the same fashion, leaving about 1⁄ 2 inch (13 mm) of rough, sandy plaster (called a brown coat or browning (UK)). When the wall is fully covered, the vertical lath "guides" are removed, and their "slots" are filled in, leaving a fairly uniform undercoat. A helper feeds new plaster onto the board, as the plaster is applied in quantity. The applier drags the board upward over the wall, forcing the plaster into the gaps between the lath and leaving a layer on the front the depth of the temporary guides, typically about 1⁄ 4 inch (6.4 mm). Lime or gypsum plaster is then applied, typically using a wooden board as the application tool. Temporary lath guides are then placed vertically to the wall, usually at the studs. As Americans and Canadians expanded west, saw mills were not always available to create neatly planed boards and the first crop of buildings in any new western or northern settlement would be put up with split beam lath. Splitting the timber along its grain greatly improved the laths' strength and durability. ![]() and Canada well into the second half of the 19th century. Early American examples featured split beam construction, as did examples put up in rural areas of the U.S. ![]() In Canada and the United States the laths were generally sawn, but in the United Kingdom and its colonies, riven or split hardwood laths of random lengths and sizes were often used. Metal lath is available in 27-inch (69 cm) by 8-foot (240 cm) sheets. Each horizontal course of lath is spaced about 3⁄ 8 inch (9.5 mm) away from its neighboring courses. Wood lath is typically about one inch (2.5 cm) wide by four feet (1.2 m) long by 1⁄ 4 inch (6 mm) thick. Each wall frame is covered in lath, tacked at the studs. These are narrow strips of wood, extruded metal, or split boards, nailed horizontally across the wall studs or ceiling joists. The wall or ceiling finishing process begins with wood or metal laths. ( March 2012) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this section by adding citations to reliable sources. Quality and durability are neglected for speed and efficiency.This section does not cite any sources. Widespread drywall use seems to be a product of mass produced housing- everything needs to be built as cheaply and quickly as possible. All the homes around the Pitot house were lost because they were built with drywall. The other houses weren’t built the old way. ![]() Afterwards, they simply hosed the walls -no harm done. When the flood came, the museum moved the furniture upstairs. The Pitot house was built the old way, with plaster walls. But one building, a plantation-home-turned-museum on Moss Street built two centuries before the disaster, was left almost entirely unscathed. Of the houses that stood, many still had to be bulldozed due to mold within the walls. "As Hurricane Katrina raged through New Orleans in 2005, neighborhood after neighborhood collapsed from flooding. But it may just be easier to change America’s eating habits than its living habits.ĭrywall is much cheaper than plaster, not eco-friendly, either. Maybe that’s because drywall really is the best way to create affordable housing for millions. White bread sales are now declining, but drywall is doing better than ever. Like white bread in the 1950s, drywall became the de facto consumer substance with the promise of a better, cleaner, easier life. They wanted a neat, tidy little white-boxed world in the 1950s after the war. ![]() People wanted white bread and confectioner’s sugar. The United States Gypsum Corporation, a company that vertically integrated 30 different gypsum and plaster manufacturing companies 14 years prior, created it to protect homes from urban fires and marketed it as the poor man's answer to plaster walls.ĭrywall didn’t catch on right away, but in the 1940s, sales grew rapidly thanks to the baby boom. ![]()
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