(H) PAINTING LIST OF BUREAU OF INDIAN STANDARD CODE OF PRACTICE (ISI) 6278 : Code of Practice for white washing and colour washing. 2932 : Enamel and synthetic, exterior (a) Undercoating (b) Finsihing. 2933 : Enamel and synthetic, exterior (a) Undercoating (b) Finsihing. 5410 : Cement paint 427 : Distemper, dry color as required. 428 : Distemper, oil emulsion colour as required. 1200 : Method of measurement of building and civil (Part-XII) engineering works white washing, color washing, distempering and painting building surface. 1200 : Method of measurement of building and civil (Part-XV) engineering works, painting, polishing, varnishing etc. 2395 : Painting of plastered surface. 1.0 Painting (General): All paints shall be of the make approved by the EIC ready mixed paints as received from the manufacturer without any admixture shall be used if thinner is necessary in the case of ready mixed paints, the name shall be as recommended by the manufacturers. The contractor shall bring all the approved paints to the site of work in their original containers in sealed condition. Paints which will be sufficient for the entire work or at least for a
fortnights work shall be brought in at a time. The empties shall be removed from the site only when item of work has been completed and permission obtained from the EIC. Painting shall be started only when the Engineer has inspected the items of work to be painted, satisfied himself about their proper quality and given his approval to commence the painting work. Painting, except the priming coat, shall be taken in hand only after all other buildings work is practically completed. The entire buildings cleaned up at least one day in advance of the paint work being started. The surface to be painted shall be thoroughly cleaned and dusted. All rust, dirt scales, grease etc. shall be removed before painting is started. The prepared surface shall be got approved by the Engineer before painting work is commenced. The paint shall be thoroughly stirred in their original containers before pouring them into smaller tins for use. While applying also, the paint shall be continuously stirred in the smaller tins so that the consistency is kept uniform. If required, a thinner shall be used to bring the paint to the required consistency. Two or more coats of painting shall be done either with brushes or by spraying as stipulated in the items of work. Each coat shall be allowed to dry out thoroughly before the next coat is applied. Each coat except the last coat shall be thoroughly rubbed down with sand paper or fine pumice stone and cleaned of dust before the next coat is applied.
The finished surface shall present a smooth and even surface without any hair marks from the brush or clogging of paint puddles. White painting doors and windows, the putty round the glass panes shall also be painted. Tops of shutters and other similar hidden locations shall not be left out in painting. After painting the glass panes shall be thoroughly cleaned by using solution available in market specially made for cleaning glasses. All painting work shall be measured in sq.m. unless otherwise specified. In measuring painting of joinery and steel work, etc. the co-efficient as given in IS:1200-1964 shall be used to obtain the area payable, unless otherwise specified in the description of the item. All furniture, fixtures, glazing, floors etc. shall be protected by covering and stains, smears, splashings if any shall be removed and any damage done shall be made good by the contractor at his own cost. The rate shall include the cost of all labour and materials involved in all the operations described above and any other specifications given under the relevant ISTM. 2.0 PAINTING PRIMING COST ON WOOD, IRON OR PLASTERED SURFACE: The primer coat shall be as specified in the description of the item. The primer shall be prepared at site or ready made paint of approved brand and manufacturer as directed by Engineer-in-charge.
At site, the primer for wood work shall be prepared from a mixture of red lead, white lead and double boiled linseed oil in the ratio of 7 lbs: 1 gallon. For iron work, the same shall be prepared from a mixture of read lead, raw linseed oil and turpentine in the ratio of 29 lbs: 1 gallon: 1 gallon. All the ingredients of primer shall conform to Indian Standard specifications and shall be of approved manufacturer and shall be brought to site in their original packing in sealed condition. The primer for the plastered surface shall be either distemper primer or cement primer of approved make. The surface shall be prepared to receive priming coat as follows: 3.0 WOOD WORKS: The surfaces to be painted shall be dry and free from moisture. All unevenness shall be rubbed down smooth with sand paper and shall be well dusted. Knots, if any shall be covered with a preparation of red lead made by grinding red lead in water and mixing with strong, hot glue, the surface treated for knotting shall be dry before the primer is applied. After the priming coat is applied, the holes etc. on the surface shall be stopped with glazier s putty or wood putty. Stopping shall not be done before the priming coat is applied as the wood will absorb the oil in the stopping and the later is therefore liable to crack. 4.0 IRON AND STEEL WORK
All rust and scales be removed by scrapping or by brushing with steel wire brushes. All dust and dirt shall be wiped away from the surface. If the surface is wet, it shall be dried before the priming coat is applied. 5.0 PLASTERED SURFACE: Ordinarily, the surface shall not be painted unit it has dried completely. Trial patches of primer shall be laid at intervals and when drying is satisfactory, painting shall be taken in hand. Before primer is applied, all holes and undulations shall be filled up with glaziers putty. When the surface to be primed is finally okayed the primer shall be applied with brushes, worked well into the surface and spread over smooth.
6.0 PAINTING WITH READY MIXED PAINT: All ready mixed paints shall be of approved brand and manufacture as directed by EIC and of the required shades. The different surface to be painted shall be prepared in the same way as described under Painting Priming Coat in wood, iron or plastered surface. The priming coat shall have dried up completely before painting is started. The number of coats to be applied shall be as stipulated in the description of the items. The painted surface shall present uniform appearance and glossy finish, free from streaks, blisters etc. 7.0 WHITE WASHING WITH LIME: Double scaffolding or stage scaffolding shall be provided for white washing to walls or ceiling as the case may be. Where ladders are proposed to be used, their tops shall be tied with pieces of old gunny bags to avoid scratches to walls. Before white washing the new works, the surface shall be properly brushed free from mortar droppings and other foreign matters. The wash shall be prepared from fresh stone white lime. The lime shall be well slaked, mixed and stirred with sufficient water t make a thin cream. This shall be allowed through a clean coarse cloth. 4 oz. of gum dissolved in hot water, shall be added to each cft. Of cream. For making the cream one gallon of water shall be added to 2 lbs of lime.
No. of coats to be seen in description of item shall be applied with brushes on new work till the surface presents a smooth and uniform finish. Each coat shall be allowed to dry before the next one is applied. Further each coat shall be inspected and approved by the EIC or his representative before the subsequent coat is applied. The finished dry surface shall not show any signs of cracking and peeling nor shall it come off readily on the hand when rubbed. White washing shall be measured in sq.m. of the finished area. The deductions for openings etc. shall be regulated as per IS: 1200-1964. The rate shall include the cost of all materials and labour involved in all the operations described above. 8.0 WATERPROOF CEMENT PAINT: Water proof cement paint of the brand, make and shade approved by the Engineer-in-charge shall be used. The surface shall be thoroughly cleaned of all mortar droppings, dirt, dust, algae, grease and other foreign matte by brushing and washing. The surface shall be thoroughly wetted with clean water before the paint is applied. Waterproof cement paint shall be mixed in such quantities as can be used up within an hour of its mixing. It shall be mixed with water and applied strictly as per manufacturer s instructions. The lids of cement paint drums shall be kept tightly closed when not in use.
The paint solution shall be applied on the clean and wetted surface with brushes or spraying machine. The solution shall be kept well stirred during the period of application. The completed surface shall be watered after the days work. The second coat shall be applied after the first coat has set for at least 24 hours. Before application of the second or subsequent costs, the surface of the previous coat shall not be wetted. There or more coats as found necessary to get a uniform shade shall be applied on new work. The specifications for scaffolding, measurements, etc. shall remain the same as described under white washing with lime. Before applying first & second coat of waterproof cement paint, the primer coat as per manufacturer s instruction shall be applied on the surface to be painted. 9.0 Distempering or Painting With Oil Bound Water Paints Etc. Distemper, washable shall comply with IS: 427 latest. Ready mixed washable distemper of an approved brand shall be used. Preparation of distemper from ingredients by the contractor shall not be allowed. The tint of distemper shall be as directed by the Engineer-in-charge and a sample application of it shall be made by the contractor if so desired. The surface shall be cleaned and all cracks, holes, irregularities etc. shall be repaired to get a smooth and even surface. It
shall be completely dry and dust-free before commencement of distempering. Signature of Tenderer Date.: Additional Engineer(I&NT) Date.: Chief