IS 2095 (Part 2) : 2001 (Reaffirmed 2007) SlIUf)2/ lffrfq; ~cf;~msTetr ~ '1'Pf 2 ~!'mI '" ~ ~ *~ 1111 (~Ffr~ Indian Standard GYPSUM PLASTER BOARDS -- SPECIFICATION PART 2 COATEDILAMINATED GYPSUM PLASTER BOARDS (Second Revision) ICS 91.100.10 © BIS 2001 BUREAU OF INDIAN STANDARDS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW DELHI 110002 Price Group 2 December 2001 AMENDMENT NO.1 SEPTEMBER 2006 TO ' IS 2095 (pART 2) : 2001 GYPSUM PLASTER BOARDS - SPECIFICATION PART 2 COATEDILAMINATED G~PSUM PLASTER BOARDS ( SecondRnllioll ) (Page 2, 'OPTIONAL'. clause 10, Title) - Substitute 'ADDITIONAL' for (CED4) .Reprograpny Unall 91S. New Deihl, ind.a AMENDMENT NO. 2 MARCH 2010 TO IS 2095 (PART 2) : 2001 GYPSUM PLASTER BOARDS SPECIFICATION PART 2 COATED/LAMINATED GYPSUM PLASTER BOARDS ( Second Revision ) (Page 1, clause 2) Insert the following new entries at the appropriate place: `2095 (Part 1) : 1996 Gypsum plaster boards Specification : Part 1 Plain gypsum plaster boards (second revision) Gypsum plaster boards Specification : Part 3 Reinforced gypsum plaster boards (second revision) Gypsum plaster for use in the manufacture of fibrous plaster boards Specification (first revision)' 2095 (Part 3) : 1996 8272 : 1984 (CED 4) Reprography Unit, BIS, New Delhi, India Gypsumand GypsumBasedProductsfor Buildings, CED 21 R:>REWORD This IndianStandard (Part 2) (SecondRevision)wasadopted by the Bureau of Indian Standards,after the draft finalized by the Gypsumand GypsumBasedProductsfor BuildingsSectional Committeehad beenapprovedby theCivilEngineering Division Council. The internalsurfacesof walls and ceilingsof mostof the buildingsare finishedinternally by applyingplaster in one or more coats. In order to reduce the demand of site labour, the use of building boards, such as gypsum plaster board, fibre hard board. cement coir board and asbestos cement-building boards as covering for walls and ceiling is increasingsteadily. Gypsumboards have the specificadvantageof being lighter than the boards of similar nature such as fibre hard board and asbestos cement building boards. Gypsum boards also possess better fire-resisting, thermal and sound insulating properties. Sufficientquantitiesof naturalgypsumand by-productgypsumare availablein India. Though naturalgypsum has been mostly used in the manufacture of gypsum boards, by-product gypsum after suitable treatment if required, is also equally suitable for manufacturing such boards. Gypsum boards may be manufactured as plain,coatedllaminated and reinforcedboards. The boards may be used to provide dry lining finishes to masonry walls, to ceilings. to steel or timber frame partitions, or as ceilings to structuralsteel columnsand beams,or in the manufacture of prefabricatedpartition panels. Plain boardsthat is gypsumplasterboardscompriseof a gypsumplastercore withor withoutfibreincasedin and firmly bondedto strong paper liners to form rectangular boards. These gypsum boards are used as wall boards and base boards with improved water-resistance and core cohesion at elevated temperatures. The coated! laminated boards also characterized by gypsum plaster and namely, waste paper fibre, sisal coir glass, etc, producedby pressing to form board of surface suitable for lamination or papering. Coatedllaminated gypsum boardsare used for layingfor concreteceiling. Withconcrete it combinesfirmlyand representsreadymadeinteriorplastering. Glass reinforcedgypsum boards (ORG) are pseudoductile materials having reasonably high flexural and impact strengths. Gypsum boards specified in the standard have been covered in three parts, Part 1 covers Plain boards, Part 2 covers coated/laminated boards and Part 3 covers reinforcedboards. This part deals with coatedllaminated gypsum plaster boards, its manufacture, tests and sampling. A scheme of labelling environment friendly products to be known as ECO Mark is being introduced at the instance of the Ministry of Environmentand Forests (MEF), Governmentof India. The ECO Mark shall be administered by the Bureau of Indian Standardsunder the SIS Act, 1986 as per the Resolution No.7 J dated 21 February 1991 published in the Gazetteof theGovernment of India. For a productto be eligibleforECOMark, it shall also carry the Standard Mark of the BIS besides meeting additional optional environment friendly requirements. The compositionof the committeeresponsible for formulation of this standard is given at Annex A. For the purposeof deciding whether a particularrequirementof this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 'Rules for roundingoff numerical values (revised) '. The numberof significantplacesretainedin the rounded off value should be the same as that of the specified value in this standard. IS 2095 (Part 2) : _1 Indian Standard GYPSUM PLASTER BOARDS (Second Revision) 1 SCOPE ThisstandW(Part2) coversthemethodofmanufacture, tests and sampling of gypsum boards for use as a lining material for ceiling, dry surfacing materialfor walls or for light weightpartitions. 4.2 Flbr. SPECIFICATION PART 2 COATEDILAMINATED GYPSUM PLASTER BOARDS The reinforcing fibre may be cellulosic fibre produced out of waste paper like newspaper,magazines.old card boards, corrugated cartones containing cellulose. 4.3 Water Potable watersare generally considered satisfactory for mixing plaster. 2 REFERENCES The IndianStandardslistedbelowcontainprovisions which, through reference in this text, constitute provisions of this standard. At thetimeof publication, the editions indicated were valid. All standards are subject to revision, and parties to agreement based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards given below: 7itle IS No. Method of test for gypsum plaster, 2S42(Part 2J Sec 1 to 8): 1981 concrete and products: Part 2 Gypsum products (first revision) 2547(Part 1): Gypsum building plaster : Part 1 Excluding premixed light weight 1976 plaster (first nvision) Methods for random sampling 4905: 1968 Method of test for thermal 9489: 1980 conductivity of materials by means of heat flow meter By-product gypsum for use in 12679: 1989 plaster, blocks and boards 4.4 011 and Greases The oil and greases used in the preparation of benches and moulds for casting shall be such as will leave the plaster surface of the product clean and unstained. 5 METHOD OF MANUFACTURE In these boards, the cellulosic fibres produced from the waste paperare intimatelyblended/embeddedin the gypsum mass. The waste paper is processed in the fibre mills to form cellulosic fibres. The gypsum plasterand the cellulosic fibres are fed intoa mixerto fonn unifonnally blended mass. The mixture of gypsum plaster and the fibres are transported to a spreading unit wherein the mixtureis evenlyspreadover a perforatedbeltor moulds and humidified. A continuous or hand press may be used to pressthe gypsumfibre mix to form gypsumfibre boards. After setting, the boards are demoulded and dried. The board is moistened with a bonding agent for surface treatment. A retarted water absorption and anti-dust properties are realized. This corresponds to a prime coaling ell'ectal in the faetay fora painting or lamination! papering. The board is now finished can be packed in a stack. 6 DIMENSIONS ANDTOLERANCES 3 TERMINOLOGY 3.0 For the purpose of this standard. the following definitions shall apply. 3.1 Gypsum Fibre Board A composition of Iypsum plaster and waste paper fibre fonnina bodyofreau1ar dimensions. 3.2 LamlnatecllC.tec1 Gypsum Board Gypsum bOards based on material conforming to IS 209~ (Part 1)or IS 209~ (Part 3) or IS8272intimately bonded with wood vineers, plastic films,'paper, etc. 6.1 Shape The board shall be rectangular or square in shape. 6.2 DlmensloDs The length, width and thickness of the boards shall be as specified in Table 1. 4 MATERIALS 4.1 GypIIIID PlMter "'of 6.3 MusThe minimummass of the boards per square metreshall be "liven in Table 1. Gypsum plater IhaII conform to Type B hemihydrate IS254~~(Part 1)or IS8272 or pIast« produced from by-product-IYPsum conforminl to IS 12679. 1 IS 2095 (Part 2) : _1 6A Fibre Gypsum Plaster Ratio The minimum fibre plaster ratio of boards shall be as per the valuespecifiedin Table 1. from a lot shall depend upon the size of the lot and shall be in accordance with coil and 2 of Table 2. 18ble1DImensions and Otber Partlculan 01Gy..m FlbreBoud (Clauses6.2, 6.3 and 6.4) Noadoal Lenltll Thltkneu IBID IDID 9.2.1 The boards for the sample shall be selected at random from the lot and in order to ensure the randomness of selection, the procedure given in IS4905 maybe followed. 'nable 2 Scale 01SampUDI and Permll8ible Width .m Ma·· of Board ka/_J (MID) 10 1 SOO 1 000 II.S Fibre: GypIU" aDd Pla.ter (Mia) 1:8 Number01Delectives (Clause 9.2) Nu.ber .1 Nu.her.I P,r.II.lbl. Sub····pl. B.rd. ID the Board. t. be Nu.b.r.f Sbe Lot Seleeted Defeetlv.. Upto 100 101 to 150 151 to 300 NOTE - Gypsum plater boards may also be manufactured in other dimensions subject to mutual agreement between the purchaser and the manufacturer. 6 8 13 0 3 6.5 Tolerances Tolerances shall be as given below: a) Length: +O,-6mm b) Width: +O,-5mm c) Thickness +0, -6mrn o 2 3 4 301 to 500 501 to 1 000 I 001 and above 20 32 50 5 7 10 3 5 7 FINISH The surface of the boards shall be true and free from imperfections that would render the boards unfit for uses. The edge shall be straight and the comers shall be square. 9.3 All the boardsselectedunder9.2shall be inspected for visualdefects,shapes,dimensions, mass of boards and fibreratio. A boardwhichis foundnotconfonning to anyone or morethe requirements inspectedfor shall be considered as defective. 9.3.1 A lot shall be considered as having found conforming to the requirements of visual inspection, shape,dimensions, massof plasterand fibreratioif the number of defectives as observed in 9.3 does not exceed the corresponding permissible number of defectivesgiven in col 3 of Table2. 8 TESTS 8.1 Visual Inspection All boards shall be sound. free from cracks, broken edges and such other imperfectionsthat would render them unfit for use. 8.2 Transverse Bending Strength The transverse bending strength when tested in accordance withIS 2542(Part2/See 1)shallnot beless than5 N/mm2· 8.3 Thermal Conductivity The thermal conductivity of gypsum board when tested in accordance with IS 9489 shall be less than 0.25kcaVmh°C. 9 SAMPLING 9A A lot having found confonning to visual inspection, shape, dimensionsand mass of plaster and fibre shall then be tested for transverse bending strength and thermalconductivityas per IS 2542 (Part 2/See 1to 8) and IS 9489. For each test a number of boards in accordance with col 4 of Table 2 shall be selected at random from those inspected under 9.3 and found conforming to the requirements inspected for under that clauses. 9A.l A lot shall be dec1aftd as having found satisfactory for the requirements of transverse bending if only all the boards tested for these tests under 9.4 pass the test individually. 10 OmONALREQUlREMENTFORECOMARK 9.1 Lot All gypsum fibre boards manufactured from similar materials under essentially similar conditions of production in a day shall be grouped together to constitute a lot. 10.1 Geaeral Requirement 10.1.1 The productshall conform to the requirements of qualityand perfonnanceas specifiedin the standard. 9.1.1 Samples shall be selected and inspected separatelyfromeach lot fordetennining itsconformity 10.1.2 The manufacturer shal produce to SIS. or otherwise to the requirementsof this standard. environmental consent clearance from the concerned 9.2 The numberof boards tobe selectedforthesample StatePollution Control Bbard as perthe provisions of 2 IS 2095 (Part 2) : 2001 the water (Pnv~ntion tmd Control of Pollution) Act 1974 and Air (Pr~vention tmd Control 01 Pollution) Act. 1981 alonswith the authorization, if required under the&virorllMnt(Protection) Act, 1986,whileapplying for ECO Mark. 10.2 Spedfle Requirements a) Manufacturer'snameand trade-mark, b) Sizeofboards, c) Batchnumber, and d) The criteria for which product has been labelled as ECOMart, if applicable andthe listof identified criticalingredients in descending orderof quality, percent by mass. 11.3 81S CertUleatioD Marldna For ECO Marking gypsum plaster boards shall be manufactured usingphospho-gypsum ($~~ 4.1). NOTE - The manufacturer shan provide documentary evidence by way of cenificate or declaration to this effect to Bureau of Indian Standardl while applyinl for £CO Mark. Each board may also be marked with the Standard Mark. 11.3.1 The use of the Standard Mark is governed by the provisions of the Bureau ofIndian Standards Act, 1986 and the Rules and Regulations made thereunder. Details of conditionsunderwhich a licencefor the use of the Standard Mark may be granted to manufacturers or producers may beobtained fromthe Bureau of Indian 11 PACKING AND MARKING 11.1 Gypsum fibre boards shall be packed so as to keep them dry, free from moisture and any kind of damage. 11.2 Each board shall be clearly and permanently marked with the following infonnation: Standards. 3 IS 1095 (Part 1) : _1 ANNEXA (Foreword) COMMITrEECOMPOSmON Representative(') SHRI SHRI Gypsum andGypsum BasedProducts forBuildings Sectional, Committee, CEO 21 0'lanizat;on National Council for Cement and Suildin. Materials, Allied Ceramics Pvt Ltd, Kolkata Associated Instrument Mfrs India Pvt (AIMIL) Ltd, New Delhi Bhanu International, Vishakhapatnam ... Buildings Materials Technology Promotion Council, New Delhi Central Building Resear~h Institute, Roorkee Central Glass and Ceramic Research Institute, Kolkata Central Public Works Depanment, New Delhi Department of IP"P, Ministry of Industry, New Delhi Directorate General of Technical Development, New Delhi E.I.D. Parry India Ltd, Chennai Engineer-in-Chief's, Branch Army Headquarters, New Delhi Fly Ash Mission, New Delhi Geological Survey of India, Jaipur IDL Salzbau (India) Ltd, Mumbai Indian Gypsum Ltd, Jind, Haryana J&K Minerals Ltd, Srinagar D. B. N. RAO (C.......) D. R. SEN SHRl S. C. JAIN SHRI N. KAuDAS DR (Ms) N. BHANUMAnDAS (Altemate) Stau J. SENouPrA SHRl V. K. SETHI (Altemate) OIlMANJEET SINGH DR MRIDUL GARO (Altemme) Stw S. CHATl'ElUEE SHRI BISHNUPADAGHOSH (Alternate) StIliR. SUBRAMANIAN SHRI S. D. SINGH (Altemate) SHRI ~ K. JAIN SHRI B. B. SHARMA (Altemate) P.C. BHAlTACHARYA (Altemate) SHRI D. S. MEHTA SHRI SHRI V. GANESH (GWM) A. K. MISHRA (Altemate) SHRI SURESH CHANDEa SHRI SHRI Y. K. SINGHAL (Alternate) SHRI MUKESH MA11tuR DR S. S. ANETA SHRI D. K. RAI (Altemate) SHRl T. RAVINDRANAN Ms MADHUUKA (Altemate) SHRI R · S. SHRI SHRI BALAIN KHAN R. S. TVAGI (Alternate) A. U. National Council for Cement and Buildin. Materials, Ballabgarh Office of the Development Commissioner (SSI), New Delhi Rajasthan Housing Board, Jaipur Rajasthan State Industrial Development" Investment, Jaipur Rajasthan State Mines" Minerals Ltd, Bikaner, Rajasthan Regional Research Laboratory, Jammu Tawi Research, Design and Standards Organization, Lucknow Sri Ram Institute for IndusUial Research, Delhi Directorate General, SIS OaK. MOHAN DR K. M. SHARMA (Altemate) SHRJ A.S.Sooo SHRI SURESH Y ADAV (Alternate) StlRI SHRI SHRI VINOD ZUrsta B. N. MOOLCHANDANI (Altemate) L. K. MAMESHWARI M. N. Rov SHRI DRJ. K. CHAR SMRJ ~ S. JOHAR (Altemate) JoINT DlItB:1OI (OtEMJcAL) DEPUTY DIRECTOR (CHEMICAL)(Altenuue) SH" ~ K. KAIKER Ms LAxMI RAWAL (Altemale) SHRI S. K. JAIN, Director (Civ Ena) IRepresenlin. Director Gen~ral (Ex-ol/icio Member) I Member Secretary $tau CHA'I\JIM!II s. Joint Director (Civ Bna). BIS 4 Bureau or Indian Standards BIS is a statutory institution established under the Bureau of Indian Standards Act, 1986 to promote harmonious development of the activities of standardization, marking and quality certification of goods and attending to connected matters in the country. Copyright BIS has the copyright of all its publications. No part of these publications may be reproduced in any form without the prior permission in writing of BIS. This does not preclude the free use, in the course of implementing the standard, of necessary details, such as symbols and sizes, type or grade designations. Enquiries relating to copyright be addressed to the Director (Publications), BIS. 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