5. Sand faced finish This type of plaster finish requires two coats of plastering; the first coat should have 12mm thick cement sand mortar and allowed to be cured for 7 days. Acrylic plasters are in lieu of neeru or POP, rendering the wall ready for painting without use of putty. A sponge is used on the second coat when the second is wet. Smooth Faced Plaster V/S Sand Faced Plaster 01. There are however exceptions to this rule such as surfaces that have visible irregularities that is more than 0.3 cm. This is a ready to use compound of inert filler materials for application on building interiors. Smooth finishing shall be completed with trowel immediately and in no case later than half an hour after adding water to the plaster mix. 5.3 23 mm thick sand face plaster 23 mm thick sand faced plaster in two coats over one bond coat shall be provided to entire external surface of sub-station, watchmen’s cabin, society office & pump house. This finish is just similar to sand faced finish except fine grained sand is used instead of coarse sand. Mortar is … Surface should be in level and absolutely dry before application. 1:4 as the backing coat is applied. White Cement Wash. Give a glistening sheen to your walls with Cement Wash made with JK White Cement. Area Recommendation. Mix ration shall be 1 cement: 1 marble chips / pebbles by volume. Normally smooth plaster is done on internal walls and ceilings. It works like a sand grain and makes the surface uniform and equal. Finally, a layer of sand is attached to the upper coat. Grading Limit of Sand For Plaster Work Grading Limit of Sand for Plaster Work. Time schedule for Cement Plastering . In achieving smooth cast plaster finish, the mortar must have a ratio of 1-part cement and 3-part sand per volume.
No sponging is done to expose the sand grain . The following defects may arise in plaster work.
Blistering of plastered surface:This is the formation of small patches of plaster … This finish is just similar to sand faced finish except fine grained sand is used instead of coarse sand. It is used as an undercoat for hard walls such as bricks and partitions. To get sand faced finish two coats of plastering is required. This type of finish is best used in external applications due to its rough nature. After curing it for seven days, the second coat is applied in a thickness of 8 mm. Loose mortar etc. It is provided wish Zig-zing lines. shall be filled in properly. The depth of scrap is 3mm. The paint labourers should be warned that they should keep a net on the face while painting … mortar is called plaster. Rough coat finish – The surface is made rough intentionally in a random pattern by scrappers and brush. A sponge is used on the second coat when the second coat is wet.
It is normally done on internal walls. The sand-face plaster shall be in two coats simultaneously or second coat after 3 days. It is applied with sand faced plaster with a trowel and after that it is coloured with paint. To fix this, use low-cost coarse plastering material as undercoat followed by fine-grain finish coating material. Rendering or application of Lime paste/ Putty to fill cracks and uneven surfaces to obtain a smooth and level finish is called neeru finish. Handle the cracks in the walls initially because they can destroy smooth finishing of the plaster. Smooth finish plaster is similar to sand faced finish except that fine-grained sand is used instead of... 02. All the put log holes,crevices etc. Commonly mix is used for plastering is 1 : 4 or 1 : 6. After plastering, pebbles of the same size and shapes are slowly dashed on the plaster surface using wooden float. The material and procedure shall be same as for sand faced plaster, except instead of sponge finish, the surface is finished plain with trowel or wooden float in case of plain cement plaster.The surface thus prepared shall be uniformly roughened for texture, by running a … Save my name, email, and website in this browser for the next time I comment. Gypsum plaster has a special property in which it can expand that prevents cracks and shrinkages from appearing in the surface. Cement plaster is generally used with 13 mm thickness and some times it can be of 19 mm thickness also. Sand faced finish is applied in two coats. https://mastercivilengineer.com/types-of-plaster-finishes-list-of-plaster-finishing Sand to be used for second coat shall be sieved. The main purpose of plastering bricks and blocks is to achieve a smooth surface in which building contractors can easily paint the wall or ceiling facade with different colors and shades. The curing shall commence after an initial period during which the surface is allowed to shed its excess moisture. De peter Plaster: This is just another form of rough cast finish. It shall be of minimum 23 mm thickness and shall be in two coats. The rendering coat of 12 mm thick is prepared as in case of pebbled dash finish. Spread finish coat plaster to desired panel texture. The first coat shall be roughened and shall be kept damp for at least two days. The process basically involves spreading wet plastering materials over blocks or bricks and using proper tools smoothen out the surface. For Neeru finish, the undercoat plaster shall, unless otherwise mentioned, be of 1:4 proportions. Such plasters are hand applied or machine applied, Mortar for the finishing coat shall consist of one part of cement plus one part of well graded sand plus one part of gravel of 3 mm to 6 mm size. It works like a sand grain and makes the surface equal and uniform. One coat of neat cement slurry @ 2.75 kg cement per square metre of area may be applied on to the undercoat to receive the top layer. A mortar layer of about 12mm thickness is required in achieving pebble dash plaster finish. Sand faced finish: Of this nature, two coats of plaster are done. ; The coating of plastic material i.e. The process of creating plasterwork is known as Plastering. The different type of plaster finishes are mentioned below: 1)Smooth Coat Finish: In this type of finish, the finishing coat is a smooth and levelled surface. After that 8mm thick layer of second coat with cement and sand in 1:1 ratio is applied. home; the practice; the people; services; clients; careers; contact; blog Step 3 - Mix the Plaster. Easiest wall FIX EVER! The second coat shall be struck uniformly over the first coat and firmly pressed and leveled using a batten. Site Engineer must Know These 100 Interview Topics, Indian Army new recruitment 2020 ( Civil Engineer Job ), Thumb Rule for concrete Mix Quantity ( Cement , Sand & Aggregate ), Top 100 Civil Engineering Interview Questions ( General Notes ), Top 150 Civil Engineer Interview questions asked in Top Companies { Must Read }, Segregation and Bleeding of Concrete – Causes and Prevention, https://www.youtube.com/watch?v=Ln1R1TdBLeQ, https://www.youtube.com/watch?v=AF5i_Yuv2cQ. It shall be well trowelled into the first coat. Plastering is a unique skill to plaster the brickwall, leveling it and achieve a good and even finishing. Its peak finishing and make it ready for painting without use of Putty by volume also called dash. Dash finish 3-parts lime that is more than 0.3 cm sand grains of neeru or POP, rendering the resistant. After adding water to the upper surface to three days, the mortar used is made rough in... 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