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Thursday, September 20, 2012

Method Statement For External Painting

METHOD STATEMENT FOR EXTERNAL PAINTING


1.1 GENERAL INSTRUCTION

1. All work shall conform to BS 6150; BS 1336, BS 245; MS 125: 1985 Enamel Paints; MS 134: 1989 – Emulsion Paints, Exterior; MS 903: 1987 – Emulsion Paints, Exterior; and approved manufacturer’s specific recommendations.


1.2 RELATED WORK SPECIFIED ELSEWHERE

  1. Unit Masonry Section 04200
  2. Metals Division 5
  3. Woods and Plastic Division 6
  4. Doors and Windows Division 8
  5. Gypsum Board Section 09250
  6. Textured Coatings Section 09835
  7. Mechanical Division 14
  8. Electrical Division 15


1.3 WORK INCLUDED

  1. Provided all materials, labor and equipment required to complete the painting works, together with ancillary work herein described and implied to the full intent of the drawings and schedules.
  2. Make thorough examination of drawings, details and schedules, determine the intent, extent, materials, and types of surfaces, locations and be fully cognizant of requirements.
  3. Examine the specifications and drawings for the work of other Section regarding the provisions for prime and finish coats. Paint or finish all materials installed throughout the project which are required to be painted, and which are left unfinished or unpainted by other Sections.
  4. For areas indicated as unfinished in the Room Finish Schedules, painting is not required, except for doors and frames, railings, miscellaneous metal work, insulation on mechanical pipes and equipment, pipes and fittings, electrical mounting boards, and all gypsum board surface. In tenant areas, prime paint gypsum board only.
  5. Provide finishes free of defects in materials and workmanship affecting appearance and performance. Defects shall include, but not be limited to improper cleaning and preparation of surface, entrapped dust and dirt alligatoring, blisters, peeling, drips, runs, uneven coverage, misses, poor cutting in, improper use or application of materials.
  6. All paints shall be factory tinted to required colors and thoroughly mixed before application.
  7. Comply with toxic trace limitations stipulated by the authorities having jurisdiction.
  8. Frame spread rating finishes shall conform to the local building code.

1.4 SUBMITTALS:

1. Colors

Paint colors will be selected by the Consultant Architects and P.R. form approved manufacturer’s full color range, including light and dark tones. Consultant Architect and P.R. will furnish Schedule showing where the various colors, gross value and sheen of the finishes occur. The Consultant Architect and P.R. shall have complete freedom in choice of colors in compiling Color Schedule and will not necessarily select colors from standard color charts of approved manufacturer whose products have been approved for use.

2. Samples

Submit samples of various finishes to the Consultant Architects and P.R. at least thirty (30) days before materials are required. Submit samples in triplicate on 300mm x 300m material of the same type as that on which the coating is to be applied, where possible. Identify each sample as to job, finish, color name, number, sheen and gloss values, date and name of contractor.

3. List of Materials

Submit name of paint manufacturer proposed for the work and complete list of materials intended for use on work prepared by paint manufacturer to the Consultant Architect and P.R. at least sixty (60) day before materials area required. Indicate approved manufacturer’s official certification that materials listed thereon is the top quality made by the company. Materials delivered to the work shall conform to the accepted list.


1.5 DELIVERY, HANDLING AND STORAGE PROTECTION

  1. Delivery material to site in sealed original containers with labels intact and store in space as directed. Keep stored materials covered at all times. The presence of any unauthorized materials or containers for such on the site shall be sufficient cause of rejection of all paint materials on the site at the time.
  2. Exercise extreme caution in the storage of materials to prevent fire or create fire hazards. Thinners and solvents shall be stored in approved metal safety containers in accordance with governing fire and safety regulations.
  3. In areas of storage, protect floor and wall surfaces from paint drips and splatters. Protect floors with sheets of clean plywood or metal panels where mixing and strictly enforce this requirement. Provide and maintain CO fire extinguishers of minimum 9kg capacity accessible in storage mixing areas.
  4. Leave storage areas clean and free from evidence of occupancy when these are required for intended use.
  5. Keep waste rags in metal drums containing water and remove from building at end of each working shift.

1.6 ENVIRONMENTAL CONDITIONS

  1. All areas shall be clean and dust free before painting is commenced.
  2. Use sufficient clean drop cloths and protective covering s for full protection of floors, furnishings and work not being painted. Protect mechanical, electrical and special equipment and all other soiling during painting process. Mask adjoining work adjacent to work being painted or carefully cut-in-Without overlaps. Clean surfaces soiled by spillage of paint and paint spatters. If cleaning operations damages the surface, repair or replace damage work without cost to the Employer.
  3. On exterior work, do not paint during or immediately following rain.
  4. Be responsible for damage to the work of this section until the building is complete and accepted by the Employer. In cases of damage, surfaces shall be cleaned and repainted to Architects satisfaction.
  5. Leave areas clean and free from evidence of occupancy upon completion of painting.
  6. Do not paint surfaces exposed to direct sun or where condensation has or will form due to the presence of high humidity and lack of proper ventilation.


2.0 MATERIALS

  1. Paint and Finishing Materials: Undiluted, highest grade, first line quality of the approved manufacturer, correctly labeled, bearing the brand and maker’s name, type of paint, color and code number.
  2. Undercoater, Sealer and Primer: Made for the purpose by the approved manufacturer of finishing materials being used.
  3. Primer: Drying time 4 hours maximum, high hiding pigments; sealer low odor, alkyd or latex to suit substrate.
  4. Paint: Aikyd and vinyl Tape, low odor, quick drying, high hiding and low solvent content.
  5. Shellac shall be pure white gum dissolved in pure grain alcohol.
  6. Flame spread ratings of interior finishes shall conform to the Malaysian Building Code.
  7. Brushes, Rollers and Application Equipment: The best of their respective kinds, clean and suitable for the work.

3.0 MIXING

  1. Ensure that paint has not settled, caked or thickened in the container, is readily dispersed with a paddle to a smooth consistency and has excellent application properties.
  2. Use all reducing and tinting materials as recommended by the approved manufacturer for the particular material reduced or tinted.
  3. Mix materials thoroughly before application.

4.0 INSPECTION

  1. Examination: Examine the work upon which the work of this Section depends prior to the application. If surfaces cannot be put in proper condition by customary cleaning, sanding and puttying, report such defects in writing.
  2. Acceptance: Failure to report defects will constitute acceptance or surfaces. Refinish the faulty work at no expense to the Employer.
  3. Moisture Content: Do not paint surface while moisture content as tested by moisture meter exceeds the following: 
    1. Wood surface 15%
    2. Masonry and concrete surfaces 10%
    3. Interior plaster and gypsum board 12%
    4. Concrete Floors 10%
  4. Lighting Level: Do not apply finishes or undertake surface preparation unless illumination characteristics are acceptable for production of first class job.

5.0 PREPARATION

  1. Dust: Clean floors, adjacent surfaces and surfaces to be painted before work is commenced.
  2. Defects: Ensure that surfaces to be finished are clean, free from machine, tool or standing marks, dust, grease, soil or other extraneous matter and all defects or sanding marks which could be detrimental to an acceptable finish.
  3. Alkaline Surface: Neutralize highly alkaline surfaces with a neutralizing wash of 4% solution of Zinc Suphate. Substitute 4% solutions of Tetrapotassium Pyrophosphate for surfaces to receive latex paints. Brush off residue before painting.
  4. Mildew: Scrub mildewed surfaces with a solution of Trisodium Phosphate, bleach with a solution of 1 part Sodium Hypochlorite to 3 parts water and rinse with clear water.
  5. Mask and cover surrounding surfaces, coordinate and remove ironmongery, electric plates and accessories as required to keep paint from adjacent surfaces. Mask labels and specification plates occurring on equipment to be painted. Properly mask all sprinkler heads and fire detectors wherever they occur in surfaces to be painted. Remove tape when paint is dry and clean. Do not clean hardware with solvent that will remove permanent lacquer finish. Reinstall after completion.

6.0 APPLICATION

  1. Approved Manufacturer’s Instructions: Apply materials in accordance with the directions and instructions of the approved manufacturer of the materials. DO not use adulterants.
  2. Workmanship: Execute the work in accordance with the recognized highest standards of workmanship of the industry and to meet requirements of the specification. Work shall be executed by approved workers specially trained and having a provincial tradesman qualification certificate of proficiency. Have an approved full time senior qualified representative at the site to direct the work.
  3. Painting shall be four-coat work throughout. Priming coat shall be color toned lighter than undercoat, undercoat lighter than the first finish coat: final coat shall be approved color. Apply on additional finish coat to surfaces scheduled to receive deep, dark or accent colors called for on the Schedules and for graphics.
    1. Each coat shall be inspected by the Consultant Architect and P.R. Recoating occurs without Consultant Architect and P.R. inspection, it shall be considered as not having been done and shall be re-coated.
  4. Paint shall be applied by means of brushes, except for wall and ceiling surfaces on which the paint shall be applied by lamb’s wood rollers. Varnish shall be brushed.
  5. Spray painting will not be permitted unless specifically approved for certain areas. If approval is granted for spraying, the equipment shall be airless type. Consultant Architect and P.R. may at any time prohibit use of spray painting for such reasons during application as carelessness, poor masking or protective measures, drifting paint fog, disturbance to other trades or failure to obtain a dense, even, opaque finish. All motors, fans, and mechanical ventilation system equipment shall be shut off during spray painting.
  6. Appearance: Apply materials evenly, uniform in thickness, color, texture and gloss under adequate illumination.
    1. Finishes shall be free of defects in materials and workmanship affecting appearance and performance visible from a distance of 2m defects shall include, but not be limited to improper cleaning and preparation of surfaces, entrapped dust and dirt, alligatoring, blisters, peeling, drips, runs, uneven coverage, misses, poor cutting in, improper use of application of materials. Apply coats of the proper consistency as received from the container.
  7. Sand: Semi-gloss, medium and high gloss shall be sanded lightly between coats.
  8. Dryness: Each coat applied shall be thoroughly dry before the next coat is applied. Follow approved manufacturer’s directions for drying time.
  9. Doors:
    1. DO NOT paint stainless steel or bronze door butts.
    2. Paint steel door butts in the following manner: Paint the trim half of each butt 2 coats to match the color of the door trim: and paint the door half of each butt 2 coats to match the color of the finish of the door. Paint the pivot portion to match the trim.
    3. Exterior doors shall have tops, bottoms and side edges finished the same as the exterior faces of these doors.
    4. 4. Do not paint over label on steel doors and frames, and other identification labels.
  10. Ledges: Finish projecting ledges, both above and below sight lines as specified for surrounding surfaces.
  11. Mechanical and Electrical Items
    1. Removable grilles, gratings, louvers and access panels for convectors and ventilating system and perimeter heating enclosures shall be removed and painted separately, if not factory finished. Reinstall when dry.
    2. Where the back of the unit, wall or insulation are visible through grilles or louvers, paint such surfaces. Visible portions of ducts behind grilles shall be painted matte black.
    3. Paint access doors and frames to match the surface in, which they occur.
    4. In Compartment Room, walls shall be painted, floor sealed with concrete sealer, all thermally insulated pipes shall be painted. Equipment will not be painted: Mask and cover equipment and floor. Equipment will not be painted. All gas piping will be painted.
    5. Use heat resistant epoxy paint on pipes and surfaces where operating surface temperature exceeds 65 degrees C.
    6. Coordinate the painting of pipes, ducts and covering with Mechanical Contractor to ensure that he does not install pipe color banding, flow arrows and pipe identification until the painting of the pipes, coverings and ducts has been done.
    7.  Remove and reinstall electrical outlet covers.
  12. Metal
    1. Paint all interior and exterior exposed metal work, including those in areas which are shown as unfinished on the room Finish Schedules, with two coats of paint over the prime coat. Include, without being limited to, all structural steel, mechanical and electrical equipment, ductwork and piping.
    2. The exceptions to paragraph 3.3.12.1 shall be stainless steel and aluminium.
    3. Ferrous Metals: Remove all rust and mili scale using power wire brushing. Remove weld flux and wash with water to remove alkali contaminants.
    4. Shop Coated Steel or Iron: Remove oil or grease contaminants by solvent washing. Touch up abraded areas with rust inhibiting primer similar to that used for shop coating.
    5. Galvanized Steel: Wash thoroughly with mineral spirits and wipe entirely clean using sufficient number of clean cloths. Touch up damage areas with organic zinc rich primer.
  13. Wood
    1. Mounting Boards: Paint both sides and edges of plywood mounting for electrical and telephone equipment with fire regardant paint before installation.
  14. Concrete and Masonry
    1. Ensure that surfaces are clean, free from contamination. Scrap of mortar nibs of cement spatter. Remove from oil by washing with xylol or Trisodium Phosphate Solution. Remove efflorescence by dry brushing or washing with a diluted solution of Muriatic Acid – 1 part commercial Muriatic acid to 20 parts water by volume – followed by complete rinsing with clean water. Remove mildew by the application of 1 part Sodium Hypochlorite to 3 part water. If dirt is also in evidence, add ¼ kg Trisodium Phosphate to 4L of the above solutions.
  15. Concrete and Masonry
    1. Inspect to ensure properly filled and finished surface. Fill small nicks or holes with patching compound and sand smooth.
    2. Cut out scratches, cracks and abrasions in wall surface as required and fill with non-shrink patching compound and sand smooth.
  16. Doors, Frame and Walls to Water Storage
    1. Prepare surface and apply primer in accordance with approved manufacturer’s instructions
    2. Apply finish by airless or conventional spray.
  17. Patching
    1. Do all retouching to ensure that the work is handed over to the Owner in perfect condition, free of runs, spatter, rust, watermarks, scratches, blemishes or other disfiguration.
    2. After fully decorating retouching and finishing a room or area, notify the Consultant Architect and P.R. After inspection and acceptance, post sign “DECORATING COMPLETE – NO ADMITTANCE WITHOUT PREMISSION”
    3. Repaint the entire plane of areas showing defects of incomplete coverage. Patching will not be permitted.

7.0 FIELD QUALITY CONTROL

  1. Arrange a site meeting between the Consultant Architect and P.R. with the approved paint manufacturer’s representative prior to the commencement of the painting operations to discuss the painting and finishing procedures to be used and to analyze the surface conditions in order that alternative recommendations may be made to the Employer and P.R. should adverse conditions exist. Discuss the following items.
    1. Environmental conditions for each area
    2. Maximum moisture readings or surfaces and type of reading meter to be used.
    3. Remedy of defects in surfaces
    4. Paint thickness measurements and acceptable tolerances
  2. Arrange with the approved paint manufacturers to visit the site at weekly intervals or more often if requested, during the surface preparation and painting operations to ensure that the proper surface preparation has been completed, the specified paint products are being used, the proper number of coats are being applied and the agreed finishing procedures are being used. Arrange for the approved paint manufacturer to regularly submit written reports to Consultant Architect and P.R.
  3. An area located in the building will be designated for site tests.
    1. Apply samples of finishes in the testing area. Apply the samples with the correct material, number of coat, color, texture, and degree of gloss required. Refinish it if required, until acceptance of the Consultant Architect and P.R. is obtained.
    2. Leave test areas undisturbed until completion of the work. Approved work in the test area shall serve as a standard for similar work throughout the project.
    3. Work, which does not match the approved sample finishes, shall be corrected and refinished at no expense to the Employer.

8.0 EXTERIOR FINISHES

  1. Steel: 1 coat exterior metal alkyd primer, 1 coat alkyd undercoat, 2 coats exterior alkyd enamel gloss

9.0 INTERIOR FINISHES

  1. Concrete: 4 coat interior latex primer-sealer alkali resistant (walls and ceiling) coat tinted alkyd undercoat (column and beams). 2 coats interior alkyd semi-gloss or eggshell enamel
  2. Concrete Block: 1 coat interior latex primer-sealer alkali resistant, 1 coat tinted alkyd undercoat, 2 coats interior alkyd semi-gloss or eggshell
  3. Steel-Primer: Touch up damage areas of primer coat with primer, 1 coat alkyd enamel undercoat, 2 coats interior alkyd enamel semi-gloss or eggshell.
  4. Concrete Floor (Refer to Room Finish Schedule for Locations): 2 coats polyurethane floor paint
  5. Gypsum Board: 1 coat acrylic primer, 1 coat tinted alkyd undercoat, 2 coats interior alkyd enamel of selected gloss.
  6. Surface visible through Grilles, Registers, etc: 2 coats alkyd enamel flat back
  7. Wood-Paint Finish (Mounting Boards): 1 coat fire retardant undercoated, 2 coats fire retardant, paint both sides before installation.
  8. Water-Storage (Door Frames and Walls): 1 coat primer, coatings, 2 coats finish-Amercoat Coatings or approved equal.
  9. Wood Carvings: 3 coats of polyurethane lacquer.

10.0 WARRANTY

  1. Submit a written executed by the contractor agreeing to provide finishes free of defects in material and workmanship affecting appearance and performance (as per paragraph 1.3 Work Included). Within the specified warranty period which is five (5) years from the date of substantial completion.

11.0 CLEANING

  1. Promptly as the work proceeds and on completion of work, remove all paint spilled, splashed or spattered. During the progress of the work, keep the premises free from any unnecessary accumulation of tools, equipment, surplus materials and debris. At the conclusion of the work, leave the premise neat and clean to the satisfaction of the Consultant Architect and P.R.

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