Gypsum plaster is a white cementing material made by partial or complete dehydration of the mineral gypsum. So Greensum plaster is actually a replacement of two processes i.e. Use below filters for find specific topics, You can use below filter for finding the nearby professionals. The density of cement plaster is higher than gypsum plaster, hence the load on building increases. Plaster is a gypsum based product that looks wonderful in your home or office. Tanvi Lad is a Senior Manager (Civil). Preparing and filling mixed wall surfaces using gypsum based plaster, presumably lime based plaster and smoothed concrete/cement. Red Top® Brand Keenes Cement: Is retemperable; can be floated for an extended time period to provide a dense finish They are less prone to cracking. Good quality gypsum is not available everywhere and hence costly. How to Calculate Quantity of Material For Plastering? Whereas gypsum plaster gives a very smooth finish which makes it compatible with paints. Pipes etc. October 14, 2018 at 2:41 pm. This plaster It cannot be applied on the smooth surface. Introduction to 3D Printed Concrete House! Sthapati Designers & Consultants Pvt. However, per square feet cost of cement plaster is less than gypsum plaster due to higher cost of gypsum. foot) Absor ption Capa city #1 POTTERY PLASTER 70 14-24 2,400 .36% 99 69 36% # 1 MOULDING PLASTER â¦ 2. Only addition of water is required. Cement plaster is not considered as save from fungus malts et cetera. Gypsum may give you a proper smooth texture leads in enhancing our interiors but we have to use cement for Outer walls because it is resistant to moisture. What is plastic? In gypsum plaster, gypsum is used as a binding material instead of Portland cement. 1. The Rise of Homesteading and the Role of an Architect in It, Best Location of Stairs in House | Inside or Outside. Whytal plaster is produced as a result of calcinations of the raw gypsum in an automatic kettle under controlled temperature. Gypsum plaster is advisable when compared to cement plaster as it gives better-desired finish and performance. Copyright 2020 GharPedia. Different types of plaster are used in different ways within ceramics. Gypsum plaster can be applied on smooth as well as a rough surface. 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. 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. K Shiva prasad. U.S.G. A single coat application is resulting in less wastage of time, labour and material. Because gypsum plaster should not be exposed to water or severe moisture conditions, it is usually restricted to interior use. She is also a blogger at gharpedia.com. The room space looks large and beautiful as gypsum plaster is pure white in colour. Gypsum Plaster Gypsum plaster is light in weight and total strength is achieved in air. They all aim at making construction faster and delivering higher and better performance. Gypsum Vs Cement: Which Oneâs The Best Plastering Material? 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. Lime vs gypsum plaster? sand cement plastering & POP punning. whereas In the case of gypsum plaster instead of Portland cement gypsum is used and it doesn’t need sand. The gypsum has a relatively large internal surface This is net savings of 24 days of construction time. Nonetheless, plaster and render are both made from the same building materials of cement, sand, water and lime gypsum. She gained her BE in Civil Engineering Degree in 2013. In the event of a fire, it acts as a barrier and will protect the blockwork, concrete and steel. She can be reached on LinkedIn, Twitter. The application of cement plaster is time-consuming process hence increases the project cost. 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. For underside of the RCC ceiling/ roof, thickness of plaster is generally 10 to 12 mm. Gypsum plaster is costlier than cement plaster for same thickness. Substrates Substrates can be either metal lath, unit masonry, monolithic concrete, or a recommended gypsum base, cement board or gypsum fiber panel. Cement plaster is not 100 % permeable to water vapour. Setting period of cement plaster vs gypsum plaster. Shrinkage crack free surfaces - smooth finish 3. Lime and portland cement plaster maybe used both internally and externally. In case of cement plastered room, space looks smaller and an attractive as it is a dark grey colour. 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. Electricity Cost: The cost of electricity used to mix sand and cement is also not considered in the equation. It has more or less same thermal conductivity as gypsum. Performance â Durability, light weight (Reduces dead load on structure) 5. Ltd. Pre-Curing and Post-Curing are necessary for cement sand plaster. Gypsum plaster has low thermal conductivity and good thermal properties and ensures energy and power saving. 100 is the square feet area for gypsum plaster, 25 is the consumption rate of 1 bag of Elite â 90. Gypsum is non-combustible and contains a high content of crystal water. Gypsum Plaster. When mixed with lime, its highly calcined, "dead-burned" white gypsum plaster produces durable, highly crack-resistant, smooth- and sand-float finishes. Gypsum Plaster with adequate initial and final setting time improves workability and provides a ready paintable surface within 3-4 days. Plaster systems typically consist of a substrate, a basecoat plaster and a finish plaster. Rate of one bag Elite â 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 thatâs why we have to deduct the percentage of GST. 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. The thickness of cement plaster should not be less than 10 mm. Whereas is gypsum plaster is a green building product. 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 case of gypsum plastered room, space looks large and beautiful as gypsum plaster is pure white in colour. Please however note that good quality gypsum is not available everywhere and hence costly and hence not yet popular. Cement plaster can be used in exterior and interior surfaces. While in case of cement plaster, thickness of plaster varies between 12mm to 20mm. Also as people are familiar with the cement mortar, a normal mason can easily handle it too. Wastage: High level of wastage is observed in using sand cement plaster due to improper handling of material. The cement plaster neither sets too fast like gypsum plaster nor sets too slow like lime plaster. 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. Gypsum plaster is cheaper as compared to cement plaster. DOES IT FALL OF EASILY IF STUCK BY SHARP OBJECT OR HAMMER BY MISTAKE. Gypsum plaster is pre-mixed and available in easy to handle bags. 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 by mixing cement, sand, and water, usually, the ratio of cement and sand is 1:4. Nowadays it is also available in Ready-made packages. Superplasticizers (High Range Water Reducer): For High-Performance Concrete, Construction Safety Tips for Workers' Well-Being. 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. Cement plaster is not a green building product. I have just stripped the wallpaper from the living room of our 1930s semi and found an encyclopaedia of different surfaces. 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. Due to the nature and structure of gypsum, it exhibits excellent bonding properties hence is applied in a single coat on RCC ceilings, internal bare-brick walls, AAC blocks and concrete columns. happho_admin7. When dry gypsum powder is mixed with water it gets hardened. gypsum, lime, and portland cement. Gypsum Plaster is the perfect rust preventive agent and also inhibits corrosion of electric metal fittings, pipes etc. It is ready to use and does not need sand. 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. Generally, thickness of gypsum plaster for ceiling is 8mm and 11mm for masonry wall. Save my name, email, and website in this browser for the next time I comment. Disadvantages of Gypsum Plaster. work and Stone work: (other than Dam) 11-22 11.10 Pointing for Dam 11-24 Appendix -I Recommended Plaster Specifications. Cost may vary according to the usage of clients. Home Gypsum Plaster VS Cement Plaster: Plastering Solution of Construction adminxxaashirwad 0 comment Construction Plastering is a primary way to coat the masonry walls for protection from external agents and provide a polished surface that can be beautified as per your desire. During the application of cement, plaster wastages are high. It is used on both surfaces internal as well as external. Cement plaster is comparative gives a rough finish. Cement plaster can develop shrinkage because it has Low tensile hand fractural and strength. 3.2 INSTALLATION, GYPSUM VENEER PLASTER A. Gypsum plaster is costlier than cement plaster for same thickness. 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. The most commonly used aggregates are sand, vermiculite, and perlite. 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. Cement plaster is usually applied on the masonry walls, where the gypsum or lime plaster is then added again. Gypsum plaster is an anti-fungus plaster and it does not get affected by any insects. In the case of cement plaster, we need pop punning on the plastered surface to receive paint. Setting time of gypsum plaster can be controlled. The site becomes dirty due to it and also needs more time for works. Double Flight Staircase!!! Red Top® Brand Keenes Cement is the ultimate choice for texturing. Gypsum plaster requires no curing which saves up on all that water. 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. Instead of metal lath, if we are doing patch work we will use a finer mesh to act as a backbone for the plaster. The application of cement plaster is a time-consuming process, hence increases the project cost. Gypsum plaster is also advisable where river sand/natural sand is not easily available for the construction. Single Flight Staircase vs. Cement plaster can be used in exterior and interior surfaces. Difference Between Plastering And Pointing, Calculation of Material Required For Brickwork. Please, donât forget to share it.Â Â. WILL IT SURVIVE NORMAL USE IN HOME. It has more or less same acoustics properties. While during the application of gypsum plaster the wastage is nominal. It is proof of durability and performance of gypsum plaster. Various surface textures and surface hardness can be obtained. She looks after review of Designs, Costing, Estimation, Tender, Tender Evaluation and detailed Engineering for Residential, Commercial and infrastructure Works. Wall Tiles and Floor Tiles: What is the Difference? Plastics are nothing but synthetic organic high... What is BOQ? Difference between cement plaster and gypsum plaster is as follows: Thanks for reading this article. This is generally done and controlled by mostly unskilled labour and hence not likely to be accurate and perfect. Cement plaster is made with cement, sand, water and a suitable plaster. It can be applied on smooth as well rough surfaces. The sand and cement are mixed at the site in different ratios. 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. Percentage of wastage is nominal during application. Green material 2. Thickness of gypsum plaster vs cement plaster. The density of gypsum plaster is less as compared to cement plaster gypsum plaster is light in weight. Gypsum plaster is also advisable where river sand/natural sand is not easily available for the construction. What's the best plaster to use? The most common types of plaster mainly contain either gypsum, lime, or cement, but all work in a similar way. Setting of Gypsum Plaster: The hydration process occurring in the paste causes the setting of the plaster and thereby develops its strength. 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. The setting not only involves the physical changes but is also a physico-mechanical phenomenon. United States Gypsum (USG) Company is the largest sup-plier to the ceramics industry. 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 â¦ Gypsum plasters exhibit high tensile and flexural strength. Skimming. Skim coating is a name for a plastering technique. Plaster of paris is made from gypsum and got its name from the quarrys around The city . Rendering is used to coat exterior surfaces of buildings and contains a higher percentage of cement within its composition. Cement plaster cannot be applied on smooth surfaces. Out of many skim mixtures, the widely used mixture is made up of lime putty and sugar sand. Gypsum plaster is the perfect rust preventive agent and also in inhibit corrosion of electric metal, fitting. Gypsum plaster do not shrink like cement during the drying out and hardening process. It gives smooth finish compatible to receive all type of paints. Gypsum plaster is easily workable for excellent finish. Gypsum plaster is not suitable for exterior finish, as it can not be used in damp situations. Again it cannot be used in wet areas like a toilet, bath, kitchen, wash area, etc. In cement plaster minimum 24-hour interval between two quotes of cement plaster. Cement when set is much harder and generally used in the construction industry . Plastering is an ancient building technique to cover the exposed surface and give protective surface against penetration of rain water, other atmospheric agencies like vermin and improves the appearance of the structure and gives decorative effects. Setting time of gypsum plaster can be controlled the time between two successive coats are very small. The thickness of plaster depends on the surface to be plastered and could be around 12 to 20 milliliters. Gypsum plaster is not affected by insects and does not nourish mould growth of fungal. This material can be applied over block, brick or concrete surface to form a smooth surface. but in the case of gypsum plaster keeping is not required we can directly apply the paint. Gypsum as a binder is used in the manufacture of acoustic tiles and plasters, a contributory factor to the absorption of air borne sounds. 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. Minimum Twenty-four-hour interval between coats of interior Portland cement plaster. After a 48-hours period finished coat plaster may be applied to interior cement base coats. However, a technique of gypsum plastering is as old as cement plastering. The Thickness of cement plaster may vary and it depends on the surfaces to be covered and its plumb and texture. Gypsum plaster is light in weight and total strength is achieved in air. Cement mortar is basically weak in tension and flexural strength and hence prone to cracking. The application of gypsum plaster is a time-saving process thus decreases the project cost. – Types of Column, Reinforcement, Design Procedure, Grillage Foundation – Types, Advantages & Disadvantages, What is Grouting? 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. Cement plaster is made up of sand Portland cement and water. But in case of fire gypsum plaster acts as a barrier and protect the blockwork and concrete and steel. It is used only in internal walls and ceilings. After sand cement plaster, POP punning is required for the better and leveled surface finish. She leads Estimation and Tendering Department of SDCPL. Gypsum plaster cannot be used for outside walls since they retain dampness. Gypsum plaster requires no water curing and should be permitted to dry out as quickly as possible. The mixture of the sand and cement is to be done on site in different ratios. foot) Dry Density (lb./cu. Further most of cracking happens due to shrinkage, which is quite common. Disadvantages of Gypsum Plaster. WHAT IS THE STRENGTH OF GYPSUM PLASTER VS. CEMENT PLASTER. They pose no health hazards and are therefore frequently specified in hospitals and clinics. – Purpose, Importance, Advantages, Disadvantages, Load Calculation on Column – Load Calculation of Column, Beam, Wall & Slab, What is Column? All Rights Reserved. The space looks smaller and unattractive as it is dark grey in colour. 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. Time between two successive coats is very small. – Types of Grouting, Advantages, Applications and Process. Nowadays river sand availability is a major problem and rivers and has become costly hence cement plaster is costlier than gypsum plaster. Nowadays there are number of trends, technology advancements and innovations with many applications in the construction sector. Know the Difference Between Cement and Concrete. Development of shrinkage cracks is quite frequent in cement plaster. After cement plaster pop punning is required for better and labelled surface finish. Gypsum is a lightweight material which is formed as a result of evaporating seawater in Massive prehistoric basins. Install in accordance with manufacturer recommendations and in accordance with ASTM C 843 Specification for Application of Gypsum Veneer Plaster. The most widely used plaster in the pottery studio is USG® No. In the case of gypsum plaster, no curing is required. Cement plaster is not considered as save from fungus malts et cetera. Gypsum plaster provides a smooth interior finish for ceiling, walls and is ideal back ground for good quality paints and wallpaper finishes. 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. 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 âPlasterâ Formulations Typical Thermal Conductivityâs of Vermiculite Plasters of Differing Densities Density Thermal Conductivity Difference Between Gypsum Plaster & Cement Plaster - YouTube DISCLAIMER: National Gypsum Company Guide Specifications have been written as an aid to the professionally qualified specifier and design professional. Benefits Of Gypsum Plaster FOR BUILDERS & DEVELOPERS: 1. May 17, 2018 at 10:23 am. Cement consists mainly of limestone and clay . 1 Pottery Plaster. The pyramid of Giza in Egypt is the oldest example of usage of gypsum plaster as an internal plaster. no issues with gypsum plaster. Although it is slightly softer than stucco, it will still hold up for more years than you can count. Gypsum is a naturally occurring mineral . Plaster tyPes There are many different types of plaster. High productivity â faster work (Reducing plastering time by 70% when compared to conventional Sand cement plaster + POP method) so time saving 4. In gypsum plaster, gypsum is used as a binding material instead of Portland cement. What's the best course for you? For example, for brick walls thickness of plaster is 12 mm to 20 mm. Why You Might Need to Upgrade Your Windows? Rendering. Lime Plaster vs Conventional Plaster. Gypsum plaster can prevent shrinkage because it has high tensile and flexural strength. GYPSUM CEMENT COMPARISON CHART Use Consist ency Set Time (Min) Dry Compressive Strength (PSI) Setting Expansion % Wet Density (lb/cu. Percentage of wastage is higher during application. Cement plaster needs an enormous amount of water during its curing period. Sand-cement plaster is mixed at site in various proportions (4:1 or 5:1) to arrive at desired strength. â Know More! 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The next time i comment dirty due to improper handling of material used aggregates are,... The gypsum or lime plaster is less as compared to cement plaster is light in and... Youtube plaster types There are number of trends, technology advancements and innovations with many Applications in the pottery is. This browser for the construction industry a finish plaster any insects hence the load on structure ).. Company is the ultimate choice for texturing and hence not yet popular its! Vary and it is usually restricted to interior use sup-plier to the professionally qualified specifier and professional! Home or office considered in the case of gypsum plaster VS. cement plaster pre-curing and post-curing is for. Hammer by MISTAKE coats of interior Portland cement in wet areas like a,., lime, or cement, sand, vermiculite, and perlite of and! Ground for good quality paints and wallpaper finishes is a lightweight material which is quite common not.