General requirements

12426 New galvanized surfaces

New galvanized surfaces shall be thoroughly cleaned to remove all dirt, oil and grease and pre-treated with either an etching primer or approved etching compound.

12427 Painted surfaces

Painted surfaces shall be cleaned by removing old paints or cleaning the surfaces as specified. Removing, undercoats shall be applied evenly over the whole surface to give a solid film, care being taken to avoid uneven thickness of paint at edge and angles.

12428 Finishing Coat

Finishing coats shall be applied evenly over the whole surface to give a solid film free from brush marks, sags, runs, orange peeling or other defects.

12429 Plastic paints

Surfaces to receive plastic paint shall be rubbed down thoroughly and evenly with abrasive paper and filled as necessary. The filler shall be rubbed down and dusted off. Plastic paint shall be applied in one under coat and two finishing coats as approved by Engineer, with thinning and application time as recommended by the manufacturer.

Plastic paints shall be identified first for internal and external work and for matt and glossy finish.
124210 Oil paints

Surfaces to receive oil paint shall be rubbed down thoroughly and evenly with abrasive paper and filled with gypsum as necessary. The filler shall be rubbed down and dusted off. Oil paint shall be applied in one under coat and two finish coats or as approved by the Engineer, with the thinning and application time as recommended by the manufacturer.

124211 Synthetic enamel paint

Metal paints, after priming where necessary shall receive a minimum of two coats of synthetic enamel paint, or as approved by the Engineer. Thinning and application time shall be as recommended by the manufacturer.

1243 Cleaning

Clean all areas affected by painting, by washing, paint removal of affected areas and polishing surface to ensure that no paint marks are left on the affected areas.

125 METHODS OF MEASUREMENT
1251 General

Painting on different surfaces shall each be given separately.

Painting to internal and external surfaces shall be given separately.
The following shall be understood as included.

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  Trimming cutting, matching patterns, and the like.
  
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  Cleaning after decorating.
  
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  Priming and background application to paints and other decorations.
  
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  Working at any height and in different colours.
  
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  Protecting the work from damage by other trades.
  

1252 Measurement

Painting, wall papers, plastic and fabric shall be measured by area.

Special application to edge shall be measured in length, by stating the girth of the surface exposed for painting.
Paints to metal surface shall be measured by area or the weight of the metal to be used.
1253 Classification

Painting and other decorative finishes shall be classified as follows:-

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  Walls, columns and beams.
  
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  Ceiling which shall include Soffits of beams,
  
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  Slabs, staircases and in joinery.
  
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  Floors.
  
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  Staircases risers and treads.
  
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  Skirting.
  
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  Balustrades and rails.
  
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  Doors, windows, curtain walls and partition.
  
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  Metal surfaces.