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

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