They both describe a combination of cement and aggregate mixed with a suitable amount of water to form a plastic mixture that will adhere to a surface and preserve the texture imposed on it. The mixture of sand and cement is done on-site in different ratios it is generally done by unskilled labour and hence not likely to be accurate and perfect. Pros. Cement plaster is a homogeneous mixture of Portland cement and sand with water. Rendering. Gypsum is a lightweight material which is formed as a result of evaporating seawater in Massive prehistoric basins. Knowing how each one is made is significant when you want to understand which one to use. Plaster vs Stucco: Key Differences. The two construction materials are powders mixed with water to form a paste. What is plastic? Rendering is used to coat exterior surfaces of buildings and contains a higher percentage of cement within its composition. The terms cement plaster and cement stucco are used interchangeably. This product resists direct moisture, making … The Thickness of cement plaster may vary and it depends on the surfaces to be covered and its plumb and texture. Plaster is a gypsum based product that looks wonderful in your home or office. Portland cement plaster on the other hand would typically be in the region of 25 to 35 newtons when cured; i.e. For example, for brick walls thickness of plaster is 12 mm to 20 mm. The thickness of cement plaster should not be less than 10 mm. Cons: It saves time during application. Plaster of paris has been used as a mould making medium and also for coving, once mixed unlike cement plaster of paris sets very quickly. Difference between cement plaster and gypsum plaster is as follows: Thanks for reading this article. Setting time of gypsum plaster can be controlled the time between two successive coats are very small. The application of gypsum plaster is a time-saving process thus decreases the project cost. PPC cement is preferred in place of OPC-grade cement for plastering. Even when they are, the finish durability is still underwhelming when compared to cement-like plaster. Hydraulic lime plaster is not as hard as cement plaster. Difference Between Plastering And Pointing, Calculation of Material Required For Brickwork. Cement when set is much harder and generally used in the construction industry. Although usually white, plaster can be dyed different colors. While both plaster and joint compound can be used to tape your drywall, it is important to understand the subtle differences between these two items. In the event of fire cement plaster becomes brittle and cracks and loses the bond with the wall. As nouns the difference between mortar and plaster is that mortar is (uncountable) a mixture of lime or cement, sand and water used for bonding bricks and stones while plaster is (uncountable) a paste applied to the skin for healing or cosmetic purposes. 2,000/- Rs. The pool builders apply the plaster to the concrete pool structure using a flat, round-edged trowel (see image below). While during the application of gypsum plaster the wastage is nominal. In the case of cement plaster, we need pop punning on the plastered surface to receive paint. The sand and cement are mixed at the site in different ratios. up to 10 times harder. Nowadays river sand availability is a major problem and rivers and has become costly hence cement plaster is costlier than gypsum plaster. However, these similarities aside, plaster is not the same as stucco. Pool Plaster VS Paint Cost Comparison. When mixed with lime, its highly calcined, "dead-burned" white gypsum plaster produces durable, highly crack-resistant, smooth- and sand-float finishes. Plaster is a mix of cement and sand with a certain amount of dye added to the mix to give you a gray color (any shade such as light, medium, dark or french), your pool plastering company may use liquid or powder pigment. The other two are lime plaster, made from calcium hydroxide and sand, and cement plaster, a combination of plaster, sand, Portland cement and water. The density of cement plaster is higher than gypsum plaster, hence the   load on building increases. Modern hydraulic limes would be graded at 2, 3.5, or 5 newtons. In the case of cement plaster pre-curing and post-curing is required. Though the terms are often used synonymously, cement, concrete, and mortar are actually three distinctly different materials: During the application of cement, plaster wastages are high. but in the case of gypsum plaster keeping is not required we can directly apply the paint. Cement plaster is not a green building product. Gypsum plaster can be applied on smooth as well as a rough surface. The application of cement plaster is a time-consuming process, hence increases the project cost. The … Plaster is a mix of white cement, white sand or marble aggregate, and water. Red Top® Brand Keenes Cement is the ultimate choice for texturing. Also, when it comes to electrical fittings and wiring, cement plaster will not develop cracks and offer a sturdy base for drilling and holding it together. Cost may vary according to the usage of clients. The purpose of plastering, rendering and screeding is to create a smooth, flat surface to receive finishes like paint, wallpaper etc. Cement plaster cannot be applied on smooth surfaces. A common recipe for plaster was to mix lime, aggregate and fiber -- often horse hair. It is used on both internal as well as external surfaces. Gypsum plaster provides a smooth interior finish for sealing walls and it is an ideal background for good quality paints and wallpaper finishes. Plaster is a time tested product. Gypsum plaster is the perfect rust preventive agent and also in inhibit corrosion of electric metal, fitting. Whereas gypsum plaster can only be used on the ceiling and interior walls it cannot be used in wet areas like toilet bath kitchen wash area balconies etc. Although it is slightly softer than stucco, it will still hold up for more years than you can count. Also, there are numbers of joints in individual masonry courses and between RCC and masonry wall. Internal walls and ceiling (Non wet area), Rs. PLASTER VS. DRYWALL. Gypsum plaster can prevent shrinkage because it has high tensile and flexural strength. This is mainly because plaster is softer and more susceptible to damage from outdoor elements than stucco; thus it is not as durable of an option. Cement board is a very hard panel formed by cement slurry and reinforced fiberglass mesh. For underside of the RCC ceiling/ roof, thickness of plaster is generally 10 to 12 mm. – Types of Grouting, Advantages, Applications and Process. It provides a strong base on which to install tile and stone. Plaster of paris is made from gypsum and got its name from the quarrys around The city. 40 kg bag – 16 to 18 sq.ft. Consider these factors when choosing between the two for your next home improvement project. Please, don’t forget to share it. Gypsum plaster is cheaper as compared to cement plaster. Cement plaster is a homogenous mixture of Portland cement, fine aggregates, and water. Until the end of the 19th century, they were mostly lime-based. Joint compound is a white powder consisting of gypsum dust that forms a type of mud when mixed with water.Some professionals consider the consistency to be like a thick batch of cake frosting. Plastering is the intermediately coating of building materials to be applied on the internal facade of concrete walls or blockwalls. In the case of gypsum plaster, no curing is required. Like I just mentioned, the ingredients are what make the difference in these two similar building materials. 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