BRE 271 - Topic 7 - Plastering, Painting - Francis - 20190920.pdf - BRE 271—Measurement and Estimation Topic 7 Dr Francis Siu Mr Thomas Poon Subject

BRE 271 - Topic 7 - Plastering, Painting - Francis - 20190920.pdf

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BRE 271 Measurement and Estimation Topic 7 Dr. Francis Siu Subject leader Assistant Professor Department of Building and Real Estate The Hong Kong Polytechnic University Hong Kong [email protected] Mr. Thomas Poon Subject lecturer Professor of Practice Department of Building and Real Estate The Hong Kong Polytechnic University Hong Kong [email protected]
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HKSMM4 2 Plastering and paving
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Plastering and paving Plaster is coating a surface with cement render or plaster finish on an internal or external wall. Plaster is for decoration and protection of every building. The role of external plaster is not only to primarily protect the covering structures of the building against the impacts of the external environment (rain, wind, sunshine), but also to provide thermal and sound protection of interior areas. 3
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Plastering and paving The purpose of plastering, rendering, and screeding is to create a smooth, flat surface to receive finishes like paint, wallpaper, etc. Plastering is the intermediate coating of building materials to be applied on the internal facade of concrete walls or blockwalls. Rendering is the intermediate coating for external walls only. Screeding is the coating laid on floors to receive finishes like tiles, carpet, and marble. (i) Cement plaster Undercoat cement:lime:sand (by volume) = 1:4:16 Finishing coat cement:lime:sand = 1:12:30 (ii) Cement render Undercoat cement:lime:sand (by volume) = 1:2:6 Finishing coat cement:lime:sand = 1:3:6 4
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