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• Plaster provides a smooth, regular, clean and durable finished surface with improved appearance. • People use plaster to cover the bare stone or brick on the walls of houses, both inside and outside. • Plaster can cover unsound & porous material. • Plaster protects the surface from atmospheric influences.
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As above be careful not to smear the mastic on to the surface of the roughcast each side of the crack. If you do it will shine and bring attention to the crack. Take your time, try and get the mastic well into the crack, after all it is a very small length of crack you are about to repair.
![Roughcast Roughcast](http://www.forsythroofingandroughcasting.co.uk/image/122902667.png)
• Plaster increases the strength of wall. • Plasters have ability to increases the durability /life of wall. • It can prevent the penetration of water from one side to other.
• It gives decorative • Plaster provides a suitable plain surface for color wash/. • Plaster provides up to certain extent. This mud plaster is prepared from equal volumes of well tempered clay or brick earth and chopped straw, loose soil or hemp and cow dung. All these ingredients are thoroughly mixed and left for about 7 days with a large quantity of water.
This is mixed again thoroughly till it comes to the desired consistency of mortar. Mud plaster is bar oldest and very cheap. Usually mud plaster is done in construction on a large scale in rural areas for low cost housing. This type of plaster is still done on large scale. Mud walls usually do not have any foundation.
Stucco or Render is a material made up of aggregates, binder and water. Stucco is applied wet and it hardens to a very dense solid. It is used as a decorative coating for walls and ceilings, and is used as an artistic material in the architecture. Stucco may be used to cover less visually attractive construction materials, such as metal, concrete, cinder block, or clay brick and adobe brick. In stucco colored are used which gives it a beautiful look.
The binders are generally chemical & the thickness of the layer is very less. Sand faced plaster is a layer of cement-sand mortar applied on brickwork and also serves as a damp-proof coat over the masonry. This type of plaster is used to give a finishing touch to a surface on walls and ceilings. To some extent, they also serve as a sound and thermal insulation material.
Sand faced plaster is also used as a decorative touch to the buildings and provides a sustainable base for paint colors. A sponge is used on the second coat when the second coat is wet. It works like a sand grain and makes the surface equal and uniform. Thus in this plaster, artificial micro cracks are provided to reduce the cracks. Pebble dash plaster is similar to roughcast plaster. It is a finish in which small pebbles or crushed stones of suitable size (usually varying from 6 to 20 mm) are used after first coat of plastering, Pebbles aggregate are dashed on to the coated surface, and press on them by using wooden float into the plastered surface slowly.
After pressing cement slurry is cleared to give a look of only stones. Many times groves or pattern are created to give a better look. After hardening, they provide an aesthetic look to the structure. Instant Neeru (Sanala) is easily available in the market.
Prepare a paste of the Neeru (Sanala) by adding water, two hours before its application on a fresh plastered surface. Instant Neeru (Sanala) is very convenient and easy to use. Small quantity of cement can be added to Neeru (Sanala), to improve its bonding with plaster. Quality of Neeru (Sanala) should be checked before applying it to the plastered surface.
Mortar for Neeru (Sanala) finish shall consist of 1 part lime putty and 1 part fine sand. The mixture shall be properly ground to a fine paste between two stones. The surface of the undercoat on which the Neeru finish is to be done shall be left rough.
The thickness of the Neeru finish shall not be less than 3 mm thick. Mala plaster is not a technical word and it is not described anywhere in any Code or any textbook. It is a word derived from local practice and tradition. Hence there is all possibility that every different location people defend it differently. However, it is a single coat plaster without any smooth finish.