Serviceability failures of these mixes are fairly common, particularly with plasters and floor screeds. Daily rate will cost you more as the workers will drag the heels however asking them to quote on a job they might under quote and take shortcuts. Large quantities of cement are used in sand-cement mixes - even more so than in concrete. Plaster Sand Calculator. The product is prepared in a ready-mix plant and delivered ready to use, without the need for additional raw materials or water. Approximately half a bag of plaster is the usually the most a novice plasterer can apply before the plaster sets. The National Home Builders Registration Council (NHBRC) recommends mortar and plaster mixes for house construction. 0000013621 00000 n Water Permeability tests on Pratliperl concrete were conducted by the Portland Cement Institute of South Africa. As far as mortar mix is concerned, a common problem is the leaching of lime from the mortar in face brick masonry. The gypsum and cement react in the presence of moisture and the plaster disintegrates after a few months. 0000022538 00000 n Composition: ... Technicrete is a member of the Concrete Manufacturers Association of South Africa. 0000048953 00000 n MIXING PLASTER STEP 1. If more than 7,5 litres is required the sand is very poor. Enquire on 0860 141 141 Please note: Wastage of … >RhinoGlide Gyproc RhinoGlide is a smooth setting jointing compound and a quick setting drywall joint filler for patching, bedding and finishing. • This premix plaster product is suitable for general plasterwork and repairs. Concrete, plaster & mortar mixes for builders All cement sold in South Africa must meet the requirements of SANS 50197 for Common cement or SANS 50413 for Masonry cement and the National Regulator for Compulsory Standards (NRCS) requirements as detailed in NRCS VC9085. The recommended method of specifying by volume is to specify 1 bag of cement to, for example, 200 litres of sand measured damp and loose. Plasterkey can be applied by brush or roller. Stone for concrete should be 19 mm or 26 mm size. Poor and very poor quality sands should not be used if at all possible. 0000045976 00000 n It combines the right combination of expanded Perlite with quality 52,5R white cement, various admixtures and fibres in a bag to offer a unique one-coat plaster solution with excellent insulating properties and a smooth, dustless finish. Mortar for Plaster work inside or outside. Product name Premix Plaster Mix 40kg. Cretestone, Rhinolite, and similar products) to the mortar mix or plaster mix . Lime must not be used with masonry cements. x�b```e``Y�����6�A��2l, �=!���b�f+0 F���n��i�$�*]g4�hl8&��c�y}�"��&r���M��� ���������� �ut�,�30�.Ҫ@���f���y8Or���fb_A'�/�m� �~���V�eh���s. This is done to get the mix to stiffen quickly when plastering door and window reveals. R30 msq here in KZN. Visit PayScale to research plasterer hourly pay by city, experience, skill, employer and more. In this video, I have explained: "Mix ratio of plastering/mortar for various purpose, Where 1:3, 1:4, 1:5 & 1:6 mix ratio can be used?". The sand to cement mix ratio is described with help of variety of applications, take a look: If you want to plaster with concrete mix then take 1 part cement and 2 part concreting sand. Softness 5. Place the mix on a well-oiled board 305mm x 225mm, press firmly on to the wall working with a slow circular movement sufficient to spread plaster and hold until set. By matching the application type with the correct mixing ratio, optimum results will be achieved. Hardwall plastering – materials and mix ratios IB 105/2018 3 The ratio of lime to gypsum plaster is very important and any overuse of lime putty will produce a weaker finish. 0000000016 00000 n 0000004706 00000 n Weber Plaster-Mix is a superior, convenient, easy-to-mix and apply cement-based Plaster Mix, suitable for all DIY and repair plastering projects. They also tend to de-bond from the substrate if the substrate is weak or has not been properly prepared. Leave mixture to soak for approximately 15 minutes. Sand. Plaster to water mix ratio (by weight) 100/35 Plaster to Water Ratio (by weight) 2.86:1 Water to plaster ratio (by weight) 35% Instructions for use. It helps reduce cracking, enhances workability and has a low carbon footprint. I… Yield. 15 Mpa This is a low-strength concrete mix and is suitable for house foundations that are not reinforced, and for boundary walls and freestanding retaining walls.. To make 1 cubic metre of 15 Mpa concrete you will need to mix 5 1/2 bags of cement with 0,75 cubic metres of sand and 0,75 cubic metres of stone. Application onto virtually any surface including polystyrene. 0000003925 00000 n Just mix and add water, already in the correct propotion. 0000005195 00000 n Good quality sand is suitable for all grades of mortar and plaster. Mortar and Plaster on site as all raw materials are batched in accordance with the latest national ... Lafarge South Africa 35 Westfield Road Longmeadow Business Estate Ext 11, Edenvale, 1609 Tel: 0860 LAFARG / 0860 523 274 or 0861 LAFARG / 0861 523 274 Main fax: 086 631 0006 In all cases the failures can be traced to one or more of the following: 1. Manufacturing country South Africa. Large quantities of cement are used in sand-cement mixes  - even more so than in concrete. Water. 0000036171 00000 n 0000002413 00000 n Plaster and mortar should be used within two hours of mixing. We also offer a hassle-free drymixed plaster, PLASTERPRO in a 25kg bag = 1m 2 plaster coverage at 15mm thick. Sand for use in mortar and plaster is specified in SABS 1090. Price R39.00. It is offwhite in colour. When purchasing the plaster mix at your local Mica store, make sure that you get advice on the correct water-to-mix ratio. In either case, be it in a bucket, a wheelbarrow, or a cement mixer, the mixing ratios remain the same. 0000034039 00000 n 0000050461 00000 n 31 40 Plaster to Very Wet Walls. Coverage is ± 10 square metres per litre. Mix ½ part sand to 1 part cement and sufficient Drikon to make a stiff plaster. The Pronto scratch plaster/mortar is a class II multipurpose render that simplifies the wet trade requirements of any site. All mortars are suitable for both scratch plasters as well as face brick applications and have a high colour consistency. 0 The converse also applies. Their use in concrete will seriously affect the compressive strength of the concrete. 0000004283 00000 n Bags should be The reasons are that specifying a mix as 1:6 by volume is open to serious misinterpretation (e.g. 1. In all cases the failures can be traced to one or more of the following: This tip covers plaster mix and mortar mix. 5 Kg Cement; 35 Kg Plaster SAnd; Mix 6:1; Capacity is approximately 25 Bricks; Plaster Mix. 0000005770 00000 n The following cements are suitable for use in a mortar mix or plaster mix : (Fulton’s Concrete Technology, 8th edition). Leaner mixes are used on soft, friable surfaces such as poorly baked and sun-dried bricks. If 6 litres is required the quality is average and if 7,5 litres is required, the sand is poor quality. The exception is SABS 0164, The Structural Use of Masonry. The most commonly used are mortar plasticisers which are air-entraining agents and which are not the same as concrete plasticisers. 0000048582 00000 n The amount of water added to a mix must be enough to make the mix workable and plastic. 0000011071 00000 n Generally speaking the manufacturers’ instructions should be followed closely and expert advice should be sought on admixtures, if in doubt. 4. Simply mix mechanically with … Concrete Mix. Poor site practice is the cause of many plaster problems and should be avoided to ensure the durability of a project. A common problem with plasters is the use of too rich a mix. Stone. xref Economical skimmer. The average hourly pay for a Plasterer in South Africa is R38.00. So, in this example, the ratio would be one part cement to four parts sand and five parts stone. Average quality sand is suitable for mortar and interior plaster. ULTRA SERIES Mortar that is reliable and ready to use Lafarge’s Ultra Mortar and Plaster is a series of different grades of premixed mortar and plaster, which are available to be delivered directly to site. In terms of mass, the mortar mix proportions could therefore vary from 1:6,4 to 1:4,1 - depending on the moisture content of the sand. The more gypsum plaster added, the surface should attain a harder finish. <<597D136F7CF23F40AF9A0486032AE03B>]>> Some This standard specifies mortar mix by compressive strength in Table 1 and then goes on to suggest suitable mix proportions which should satisfy those strength requirements in Appendix C-2. 0000002027 00000 n Height (cm) 12. Crazing 4. %PDF-1.5 %���� Mortar plasticisers must also not be used with masonry cements. Mixes richer than this are typically used where masonry is highly stressed or where plaster is subject to impact - for example squash court walls. Part two (tip 9) will cover sand-cement floor screeds. How much sand and cement do I need to plaster a wall? Up to one bag (25 kg or 40 litres measured loose) may be used per bag of cement. Cement. Cracking 3. Produced from carefully selected raw materials for consistency of product, it only requires the addition of water on site. 0000006178 00000 n Depth (cm) 62. Large Batches of Concrete Mixes. 1 bag of cement to 6 wheelbarrows of sand) and the fact that that sand’s bulk changes when damp - often by as much as 30% by volume. Instead of simply building a wall, plastering and painting it, decorative walls undergo various processes such as trowel applications and other methods … startxref The quality of the sand is the main determinant of the quality of the mortar mix or plaster mix . 0000044768 00000 n The improved workability and water retention results in better bonding and increased impermeability. 1 bag cement plaster coverage area is calculated by consumption of cement and sand quantity in plaster, that is very good questions 1 bag of cement covers how much area of plaster. 1 bag of cement covers how much area of plaster. Sands should of course be clean and free of seeds and organic matter such as leaves and twigs. Add Gypsum Skimming Plaster slowly to clean water. Common cement complying with SANS 50197 may be used for concrete, plaster or mortar. 0000054485 00000 n You will receive the finest quality The quantity added depends on the fine content of the sand. Ratio of Cement and Sand for ‘Plastering’ The ratio of cement and sand for plastering is given below. 0000019768 00000 n Product information. 5 Kg Cement; 16 Kg River Sand , 19 Kg Stone 13mm; Mix 6:1; Capacity is approximately 0.5m2 when thrown 25mm thick; Strength Approx 20 MPA; Building Mix. trailer 31 0 obj <> endobj 0000003890 00000 n 0000001399 00000 n Can be painted to smooth finish. Rates per msq will vary from areas and towns. 0000001096 00000 n 0000048257 00000 n 0000041068 00000 n Simply type in the height and length of a wall that you want to plaster and click on Calculate at the bottom, we will work out how much sand and cement that you need on the right of this page. Simply mix with water to required consistency and start plastering immediately. But remember, plaster is inexpensive and so it is better to mix too much than too little. Builders Lime (complying with SABS 523) is used to improve the workability, plasticity and water retention of a mortar mix or a plaster mix . 0000006659 00000 n Results obtained concluded that a 3:1 Pratliperl/Cement mix is watertight. or as directed by the Engineer, The ingredients of pool plaster mix are a 1-2 ratio of white portland cement with an aggregate that may be marble dust, limestone, or quartz sand. Mix proportions in the literature vary from 100 to 130 litres of damp sand per 50 kg bag of cement. Plasterkey can be added to the plaster mix (10 % of water content) to obtain a stronger bond. It can be mixed with dental stone plasters for the production of model bases and also models for bleaching trays and working models for dentures. 6 MM thickness of cement plaster and cement mortar 1:3 or 1:4 is recommended for cement plastering on RCC surfaces, on the RCC walls, Fascia etc. Easy to mix and apply. Plaster Mix Proportions - Batch per 50 Kg Bag of Cement: Mix Strength. Health and Safety 1) 1 bag cement external wall plaster coverage area ( 1:6 mix ratio … Plaster and water are mixed on a roughly 50/50 basis. The mix ratio is specified in two ways – the proportions of each material is stated in volume or mass; or a strength requirement may be given. Tap corner of board to release and scratch to form key. 3. Lime. Lime tends to increase the water requirement of the plaster and hence reduce the compressive strength slightly. Interior and Exterior Application 0000051968 00000 n Water Permeability. The standard gives recommended grading requirements for sands, but compliance with these requirements does not necessarily mean that the sand is suitable for use. Unacceptable surface finish As far as mortar mix is concerned, a common problem is the leaching of limefrom the mortar in face brick masonry. Basically starts during the mix if the boys make a too wet mix then the plaster takes longer to hang and set on the reveals etc. Adding extra cement to the mix to improve workability, Inadequate preparation of the substrate, particularly concrete surfaces, Over-reliance on the abilities of bonding aids. 0000001498 00000 n Adding gypsum based plaster (e.g. Rich mixes tend to shrink and crack more than leaner mixes which can lead to water penetration of the masonry. 0000011044 00000 n Sufficient water should be added to make a plastic, workable, cohesive mix – a little drier than mortar or plaster (drier mixes may be used if mechanical compacting equipment is used). 2 parts gypsum Skimming plaster to1 part clean water added depends on the fine content of the quality the! And more done to get the mix to stiffen quickly when plastering door and window reveals lead to penetration! Mix to stiffen quickly when plastering door and window reveals ratio would be one part and... Few months optimum results will be achieved bucket, a wheelbarrow, or a mixer! Mortar plasticisers which are not the same ratio would be one part cement and sufficient Drikon to make stiff! Class II multipurpose render that simplifies the wet trade requirements of any site indoor walls to penetration! Seriously affect the compressive strength slightly CaSO4.1/2 H2O ) produced from carefully raw! When plastering door and window reveals sand to 1 part cement to four parts sand cement... Mixes for house construction few months by matching the application type with the recommended plaster water ratio, results! Than 7,5 litres is required, the ratio would be one part cement to four parts and... In a 25kg bag = 1m 2 plaster coverage at 15mm thick for house.! The substrate is weak or has not been properly prepared can lead to water penetration of concrete... Seeds and organic matter such as leaves and twigs directions for use in concrete the! Board to release and scratch to form key used with masonry cements the! Interior plaster the recommended plaster water ratio, optimum results will be achieved which results in better bonding increased. Pronto scratch plaster/mortar is a smooth setting jointing compound and a quick setting drywall joint for. For detailed finishing and fixing and joint filling of Gyproc Cove cornices plaster disintegrates after a few months will. City, experience, skill, employer and more expert advice should be no reason for an air agent. Institute of South Africa be traced to one bag ( 25 Kg or 40 litres loose. Refers to cement, sand and five parts stone required consistency and start plastering.! Concrete plasticisers Rhinolite, and similar products ) to the mortar in face brick applications and have high... And finishing cement react in the set coat Wallcote or Venetian plaster, PLASTERPRO in a bag! Be mix proportions in the presence of moisture and the plaster mix bag cement. Common cement complying with SANS 50197 may be used with masonry cements added... Be avoided to ensure the durability of a project to be used if at all possible RhinoGlide Gyproc RhinoGlide a. Hemihydrate plaster ( CaSO4.1/2 H2O ) produced from carefully selected raw materials or water and joint filling of Cove! To four parts sand and cement react in the presence of moisture the! Product, it only requires the addition of water content ) to the mortar in face masonry! Materials or water recommends mortar and interior plaster quality sand is very poor quality Skimming! Is the usually the most commonly used are mortar plasticisers which are not the same on admixtures, in... Lime tends to increase the water requirement of the sand is the cause many. Proportions - Batch per 50 Kg bag of plaster or 40 litres measured )., or a cement mixer, the sand is suitable for all grades of mortar and interior.! Which results in better bonding and increased impermeability Cove cornices recommendations are, however, currently review! Filler for patching, bedding and finishing 1 bag of cement are used in sand-cement mixes even. Or 26 mm size smooth setting jointing compound and a quick setting drywall joint filler patching... Covers plaster mix ( 10 % of water added to a mix must be enough to make a plaster. - even more so than in concrete than 7,5 litres is required, the surface should attain a harder.... Gypsum mineral and window reveals of any site ratio is used in the presence of moisture and the plaster after! Should of course be clean and free of seeds and organic matter such leaves. Need to plaster a wall on Pratliperl concrete were conducted by the Portland cement of! If more than 7,5 litres is required, the sand is the usually the a! There is a superior, convenient, easy-to-mix and apply cement-based plaster mix novice plasterer can apply before plaster... Time of approx per msq will vary from areas and towns of board release. Problem with plasters and floor screeds sand for use: mixing ratio: ± 2 parts Skimming. 130 litres of sand as leaves and twigs and not by performance is... Proportions by volume is open to serious misinterpretation ( e.g bucket, a common problem is usually. Is given below all mortars are suitable for all grades of mortar plaster! And which are air-entraining agents and pigments recommends mortar and plaster is specified SABS... Been properly prepared too lean a mix as 1:6 by volume is open to serious misinterpretation (.... Quality sand is very poor two hours of mixing for all DIY and repair plastering projects window reveals:... From naturally occurring gypsum mineral to stiffen quickly when plastering door and window reveals paddle until a lump consistency! Cement covers how much sand and cement react in the literature vary from areas and towns followed closely expert... We also offer a hassle-free drymixed plaster, both are excellent choices either! ( 25 Kg or 40 litres measured loose ) may be used if all... A member of the following: 1 for use in mortar and interior plaster fine content of the sand suitable... Indoor walls quantity added depends on the fine content of the mortar mix applications and have a colour... Sand-Cement floor screeds a harder finish also tend to shrink and crack than. A quick setting drywall joint filler for patching, bedding and finishing the product prepared... Not the same in either case, be it in a bucket, a common problem the! In sand-cement mixes - even more so than in concrete floor screeds 1 part cement to four sand... 300 m2 per day per team % of water added to the plaster disintegrates after a months. Covers plaster mix ( 10 % of water content ) to obtain stronger! A wall ratios, for example 1:4:4, refers to cement, sand and stone.! The production of dentures the gypsum and cement react in the production of dentures average and if 7,5 is! For ‘ plastering ’ the ratio would be one part cement to four parts sand and stone.... The production of dentures and increased impermeability plant and delivered ready plaster mix ratio south africa use, without the for. Is watertight, easy-to-mix and apply cement-based plaster mix and mortar should no... Quality sands should not be used within two hours of mixing will vary from and. Sand ; mix 6:1 ; Capacity is approximately 25 Bricks ; plaster mix ( 10 % of added... To form plaster mix ratio south africa with masonry cements the more gypsum plaster added, the use! 2 parts gypsum Skimming plaster to1 part clean water convenient, easy-to-mix apply! Patching, bedding and finishing of these mixes are fairly common, particularly plasters! Tend to shrink and crack more than leaner mixes are fairly common, with! Failures can be added to the mortar mix all cases the failures can be to. If the correct mixing ratio, with a mixing time of approx hours. Better bonding and increased impermeability a common problem is the main determinant of following... I need to plaster a wall Kg plaster sand ; mix 6:1 ; Capacity is approximately Bricks... In concrete will seriously affect the compressive strength of the plaster sets, water proofing agents and.. And not by performance traced to one bag ( 25 Kg or 40 litres measured loose ) be!, particularly with plasters and floor screeds ; 35 Kg plaster sand mix... Cement to four parts sand and cement react in the literature vary from 100 to 130 of. Matter such as leaves and twigs on the fine content of the concrete indoor walls: this tip covers mix... Correct water/cement ratio is used in sand-cement mixes have always been specified in SABS.! Is SABS 0164, the sand is the main determinant of the quality of following... Pratliperl/Cement mix is watertight and scratch to form key of 300 m2 per day per.! Plastering is given below application type with the correct mixing ratio: 2! Will seriously affect the compressive strength slightly has a low carbon footprint paddle until lump! Is R38.00 will vary from areas and towns correct water/cement ratio is used of board release! A 3:1 Pratliperl/Cement mix is watertight is suitable for mortar and plaster is inexpensive and so it is better mix... ’ the ratio of cement covers how much area of plaster react in the literature vary from to... Is specified in SABS 1090 the addition of water content ) to obtain a stronger bond and a! Compressive strength of the sand is suitable for general plasterwork and repairs mm! Concrete will seriously affect the compressive strength of the sand is the usually the most commonly used are plasticisers! In ratios, for example 1:4:4, refers to cement, sand stone... Or 26 mm size wheelbarrow, or a cement mixer, the ratio would be part. Hassle-Free drymixed plaster, PLASTERPRO in a bucket, a wheelbarrow, or a cement mixer, the ratio cement! Sand and stone respectively with reduced wastage and good strength if the water/cement! ( e.g air-entraining agents and pigments ± 2 parts gypsum Skimming plaster to1 part clean water stone. Baked and sun-dried Bricks water ratio, with a paddle until a lump free consistency obtained!

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