Green material 2. The application of gypsum plaster is a time-saving process thus decreases the project cost. 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. Cement consists mainly of limestone and clay . 100 is the square feet area for gypsum plaster, 25 is the consumption rate of 1 bag of Elite – 90. Cement plaster is not considered as save from fungus malts et cetera. Gypsum plaster is not affected by insects and does not nourish mould growth of fungal. Benefits Of Gypsum Plaster FOR BUILDERS & DEVELOPERS: 1. happho_admin7. Gypsum plaster is costlier than cement plaster for same thickness. Cement plaster cannot be applied on smooth surfaces. Cement plaster is not 100 % permeable to water vapour. Skimming. They are less prone to cracking. The most commonly used aggregates are sand, vermiculite, and perlite. They pose no health hazards and are therefore frequently specified in hospitals and clinics. Difference Between Plastering And Pointing, Calculation of Material Required For Brickwork. Know the Difference Between Cement and Concrete. It has more or less same acoustics properties. Further most of cracking happens due to shrinkage, which is quite common. Gypsum plaster is easily workable for excellent finish. Gypsum plaster is more expensive than cement sand plaster but cost disadvantages should be weighed against the advantages and the fact that the labor cost is appreciably greater than that of materials in plastering. In the case of gypsum plaster, no curing is required. They all aim at making construction faster and delivering higher and better performance. It has more or less same thermal conductivity as gypsum. The application of cement plaster is time-consuming process hence increases the project cost. Gypsum plaster can prevent shrinkage because it has high tensile and flexural strength. Rendering. Gypsum plaster requires no curing which saves up on all that water. This plaster Use below filters for find specific topics, You can use below filter for finding the nearby professionals. Various surface textures and surface hardness can be obtained. Also gypsum plastering cannot be done in areas which are continuously damp such as bathroom etc., Gypsum plaster is costlier than traditional cement motar plaster (cement and sand) for same thickness of plaster. During the application of cement, plaster wastages are high. Electricity Cost: The cost of electricity used to mix sand and cement is also not considered in the equation. Cement plaster is usually applied on the masonry walls, where the gypsum or lime plaster is then added again. – Purpose, Importance, Advantages, Disadvantages, Load Calculation on Column – Load Calculation of Column, Beam, Wall & Slab, What is Column? The plaster is manufactured as a dry powder and is mixed with water to form a stiff but workable paste immediately before it is applied to the surface. Different types of plaster are used in different ways within ceramics. Out of many skim mixtures, the widely used mixture is made up of lime putty and sugar sand. Gypsum plaster is cheaper as compared to cement plaster. Gypsum Vs Cement: Which One’s The Best Plastering Material? Cement plaster is made by mixing cement, sand, and water, usually, the ratio of cement and sand is 1:4. Cement plaster is comparative gives a rough finish. WILL IT SURVIVE NORMAL USE IN HOME. Sand-cement plaster is mixed at site in various proportions (4:1 or 5:1) to arrive at desired strength. These types of plaster are a commonly used material to bond the masonry units so cement plaster is more likely to adhere over the walls and such bonding. Cement plaster needs an enormous amount of water during its curing period. Red Top® Brand Keenes Cement: Is retemperable; can be floated for an extended time period to provide a dense finish It gives smooth finish compatible to receive all type of paints. After cement plaster pop punning is required for better and labelled surface finish. Rate of one bag Elite – 90 is = 250/-Here make sure that the rate should not contain GST, GST should be extra because anyway at the end, the contractor will be getting the benefit of GST that’s why we have to deduct the percentage of GST. The application of gypsum plaster is time saving process, thus decreases the project cost. It is proof of durability and performance of gypsum plaster. Gypsum plaster provides a smooth interior finish for sealing walls and it is an ideal background for good quality paints and wallpaper finishes. In the event of a fire, it acts as a barrier and will protect the blockwork, concrete and steel. NKV Gypsum requires no curing & no wastage of water Sand Cement Plaster needs curing for 8 - 10 days at least 2 times a day 4 After drying for about 3- 4 days, the surface can be directly painted. It is used on both surfaces internal as well as external. Tanvi Lad is a Senior Manager (Civil). Red Top® Brand Keenes Cement is the ultimate choice for texturing. Cement Plaster. In case of cement plastered room, space looks smaller and an attractive as it is a dark grey colour. Lime vs gypsum plaster? October 14, 2018 at 2:41 pm. Substrates Substrates can be either metal lath, unit masonry, monolithic concrete, or a recommended gypsum base, cement board or gypsum fiber panel. Pre-Curing and Post-Curing are necessary for cement sand plaster. The density of gypsum plaster is less as compared to cement plaster gypsum plaster is light in weight. But in case of fire gypsum plaster acts as a barrier and protect the blockwork and concrete and steel. Skim coating is a name for a plastering technique. The key difference between gypsum and plaster of Paris is that the Gypsum contains calcium sulfate dihydrate whereas the plaster of Paris contains calcium sulfate hemihydrates. What's the best course for you? Although it is slightly softer than stucco, it will still hold up for more years than you can count. The pyramid of Giza in Egypt is the oldest example of usage of gypsum plaster as an internal plaster. The application of cement plaster is a time-consuming process, hence increases the project cost. Gypsum plaster is a white cementing material made by partial or complete dehydration of the mineral gypsum. The thickness of cement plaster should not be less than 10 mm. May 17, 2018 at 10:23 am. Gypsum plaster can be applied on smooth as well as a rough surface. 11.5 Cement and Cement Lime Plaster 11-4 11.6 Lime Plaster 11-14 11.7 15 mm Mud Plaster 11-17 11.8 Special Finishes 11-19 11.9 Pointing on Brick. Instead of metal lath, if we are doing patch work we will use a finer mesh to act as a backbone for the plaster. WHAT IS THE STRENGTH OF GYPSUM PLASTER VS. CEMENT PLASTER. Gypsum plaster is also advisable where river sand/natural sand is not easily available for the construction. – Know More! It is ready to use and does not need sand. This is generally done and controlled by mostly unskilled labour and hence not likely to be accurate and perfect. Shrinkage crack free surfaces - smooth finish 3. The density of cement plaster is higher than gypsum plaster, hence the   load on building increases. – Types of Grouting, Advantages, Applications and Process. The setting not only involves the physical changes but is also a physico-mechanical phenomenon. Cost may vary according to the usage of clients. The sand cement plaster is a homogeneous mixture of Portland cement and sand with water. What's the best plaster to use? whereas In the case of gypsum plaster instead of Portland cement gypsum is used and it doesn’t need sand. Thickness of gypsum plaster vs cement plaster. Development of shrinkage cracks is quite frequent in cement plaster. Lime and portland cement plaster maybe used both internally and externally. but in the case of gypsum plaster keeping is not required we can directly apply the paint. High productivity – faster work (Reducing plastering time by 70% when compared to conventional Sand cement plaster + POP method) so time saving 4. It cannot be applied on the smooth surface. In gypsum plaster, gypsum is used as a binding material instead of Portland cement. Gypsum plaster do not shrink like cement during the drying out and hardening process. United States Gypsum (USG) Company is the largest sup-plier to the ceramics industry. All Rights Reserved. Sand, lime and cement plaster 1,440 90 0.476 3.3 Sand and gypsum plaster 1,410 88 0.649 4.5 Gypsum plaster 1,280 80 0.461 3.2 Vermiculite gypsum plaster 640 40 0.187 1.3 Typical Thermal Conductivitys of Various “Plaster” Formulations Typical Thermal Conductivity’s of Vermiculite Plasters of Differing Densities Density Thermal Conductivity 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. Cement plaster is made with cement, sand, water and a suitable plaster. She gained her BE in Civil Engineering Degree in 2013. In the case of gypsum plastered room, space looks large and beautiful as gypsum plaster is pure white in colour. She is also a blogger at gharpedia.com. Here we give you brief comparison of Cement Plaster vs Gypsum Plaster: From the above comparison of Cement Plaster vs Gypsum Plaster, Gypsum plaster is advisable as compared to cement plaster asit gives better-desired finish and performance. It can be applied on smooth as well rough surfaces. – Types of Column, Reinforcement, Design Procedure, Grillage Foundation – Types, Advantages & Disadvantages, What is Grouting? For example, for brick walls thickness of plaster is 12 mm to 20 mm. The most widely used plaster in the pottery studio is USG® No. Gypsum Plaster is the perfect rust preventive agent and also inhibits corrosion of electric metal fittings, pipes etc. Gypsum plaster is the perfect rust preventive agent and also in inhibit corrosion of electric metal, fitting. Wastage: High level of wastage is observed in using sand cement plaster due to improper handling of material. Setting time of gypsum plaster can be controlled the time between two successive coats are very small. Cement plaster is made up of sand Portland cement and water. After sand cement plaster, POP punning is required for the better and leveled surface finish. In the bathroom or in the kitchen it will lead to the formation of condensation on the walls and as consequences moulds, fungi will develop and also floor will become slippery due to moisture. Gypsum as a binder is used in the manufacture of acoustic tiles and plasters, a contributory factor to the absorption of air borne sounds. Cement plaster is not considered as save from fungus malts et cetera. Gypsum plasters exhibit high tensile and flexural strength. Percentage of wastage is nominal during application. Gypsum plaster has low thermal conductivity and good thermal properties and ensures energy and power saving. I have just stripped the wallpaper from the living room of our 1930s semi and found an encyclopaedia of different surfaces. The gypsum has a relatively large internal surface sand cement plastering & POP punning. A single coat application is resulting in less wastage of time, labour and material. Metal lathing embedded in gypsum plaster will not corrode or rust and serves durable and long life. In Sand cement plaster curing requires a lot of water (0.44 gm/per gm of cement) which is saved when gypsum plaster is used. work and Stone work: (other than Dam) 11-22 11.10 Pointing for Dam 11-24 Appendix -I Recommended Plaster Specifications. Nowadays it is also available in Ready-made packages. Gypsum Plaster Gypsum plaster is light in weight and total strength is achieved in air. Whereas gypsum plaster gives a very smooth finish which makes it compatible with paints. What is plastic? The space looks smaller and unattractive as it is dark grey in colour. When mixed with lime, its highly calcined, "dead-burned" white gypsum plaster produces durable, highly crack-resistant, smooth- and sand-float finishes. K Shiva prasad. no issues with gypsum plaster. The Thickness of cement plaster may vary and it depends on the surfaces to be covered and its plumb and texture. Good quality gypsum is not available everywhere and hence costly. The cement plaster neither sets too fast like gypsum plaster nor sets too slow like lime plaster. Gypsum is non-combustible and contains a high content of crystal water. This material can be applied over block, brick or concrete surface to form a smooth surface. Density of cement plaster is higher than gypsum plaster; hence the load on the building is increased as compared to gypsum plaster and needs water to attain strength. Plaster of paris is made from gypsum and got its name from the quarrys around The city . The thickness of plaster depends on the surface to be plastered and could be around 12 to 20 milliliters. DISCLAIMER: National Gypsum Company Guide Specifications have been written as an aid to the professionally qualified specifier and design professional. Introduction to 3D Printed Concrete House! foot) Dry Density (lb./cu. Difference Between Gypsum Plaster & Cement Plaster - YouTube Minimum Twenty-four-hour interval between coats of interior Portland cement plaster. This is net savings of 24 days of construction time. Gypsum Plaster. Whytal plaster is produced as a result of calcinations of the raw gypsum in an automatic kettle under controlled temperature. Time between two successive coats is very small. Gypsum plaster provides a smooth interior finish for ceiling, walls and is ideal back ground for good quality paints and wallpaper finishes. Gypsum plaster is premixed and available in easy to handle bags only addition of water is required resulting in less wastage of time labour and material. She leads Estimation and Tendering Department of SDCPL. When dry gypsum powder is mixed with water it gets hardened. Gypsum plaster is also advisable where river sand/natural sand is not easily available for the construction. GYPSUM CEMENT COMPARISON CHART Use Consist ency Set Time (Min) Dry Compressive Strength (PSI) Setting Expansion % Wet Density (lb/cu. Why You Might Need to Upgrade Your Windows? Gypsum plaster is advisable when compared to cement plaster as it gives better-desired finish and performance. The following information may help you choose to use either a conventional plaster or lime plaster: Conventional Plaster defined Backing coat: sand & cement, or gypsum … Ltd. Nowadays river sand availability is a major problem and rivers and has become costly hence cement plaster is costlier than gypsum plaster. Disadvantages of Gypsum Plaster. Gypsum plaster is costlier than cement plaster for same thickness. Whereas is gypsum plaster is a green building product. Cement mortar is basically weak in tension and flexural strength and hence prone to cracking. Percentage of wastage is higher during application. 1 Pottery Plaster. After a 48-hours period finished coat plaster may be applied to interior cement base coats. Gypsum Plaster with adequate initial and final setting time improves workability and provides a ready paintable surface within 3-4 days. It is used only in internal walls and ceilings. Difference between cement plaster and gypsum plaster is as follows: Thanks for reading this article. The thickness of undercoat of gypsum plasters are generally 11 mm thick for walls and 8 mm thick for ceiling and finish coat plaster is 2 mm thick. Generally, thickness of gypsum plaster for ceiling is 8mm and 11mm for masonry wall. Please, don’t forget to share it. Â. So Greensum plaster is actually a replacement of two processes i.e. Setting period of cement plaster vs gypsum plaster. She can be reached on LinkedIn, Twitter. Cement plaster can be used in exterior and interior surfaces. Also as people are familiar with the cement mortar, a normal mason can easily handle it too. However, a technique of gypsum plastering is as old as cement plastering. Gypsum plaster cannot be used for outside walls since they retain dampness. Gypsum building plasters are used extensively in many countries of the world including Australia, Canada, United Kingdom, United States of America and USSR, for general building operations and for the manufacture of performed gypsum building products which have the specific advantages of lightness and high fire resistance. Cement plaster up to 200 to 300 C acts as refractory material and resists fire but later it becomes brittle and cracks and falls and looses bond with wall. While during the application of gypsum plaster the wastage is nominal. Plastics are nothing but synthetic organic high... What is BOQ? Gypsum plaster is an anti-fungus plaster and it does not get affected by any insects. In the case of cement plaster pre-curing and post-curing is required. In the event of fire cement plaster becomes brittle and cracks and loses the bond with the wall. Install in accordance with manufacturer recommendations and in accordance with ASTM C 843 Specification for Application of Gypsum Veneer Plaster. Because gypsum plaster should not be exposed to water or severe moisture conditions, it is usually restricted to interior use. Plaster tyPes There are many different types of plaster. Please however note that good quality gypsum is not available everywhere and hence costly and hence not yet popular. Cement when set is much harder and generally used in the construction industry . Single Flight Staircase vs. In the case of cement plaster, we need pop punning on the plastered surface to receive paint. Cement plaster is not a green building product. Plaster systems typically consist of a substrate, a basecoat plaster and a finish plaster. Setting time of gypsum plaster can be controlled. 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Needs an enormous amount of water during its curing period the paste causes the setting not involves! Are nothing but synthetic organic high... What is the perfect rust preventive agent and also in corrosion...