Prepare surfaces and apply paint coats by brush, roller or aerosol to heavy goods and public service vehicles

Business Sectors (Suites): Coachbuilding
Developed by: IMI
Approved on: 30 Mar 2020


This standard identifies the competencies you need to prepare surfaces in accordance with approved procedures.  You will be required to identify the materials and substrates.  You will be able to prepare materials and equipment and apply both foundation and topcoats to body panels and components using a brush, roller or aerosol.

Performance criteria

You must be able to:

P1 wear suitable personal protective equipment and use the specified environmental safety equipment throughout all vehicle refinishing operations
P2 prepare, check and adjust all the tools and equipment required following manufacturer's instructions, prior to use
P3 support vehicle refinishing operations by reviewing: 

P3.1 product data
P3.2 work instructions
P4 identify the body panel substrates accurately prior to undertaking any refinishing work
P5 prepare all the refinishing materials, following health and safety requirements and using:

P5.1 materials which conform to the specification required
P5.2 industry approved process
P5.3 the manufacturer's approved equipment
P5.4 workplace procedures
P6 apply all refinishing materials using approved tools and equipment and following:

P6.1 the manufacturer's instructions
P6.2 industry approved methods and techniques
P6.3 health, safety and environmental requirements
P7 dry all refinishing materials following health and safety requirements and using:

P7.1 the manufacturer's approved method
P7.2 the manufacturer's approved equipment
P8 ensure the finished product meets the refinishing specification required
P9 clean and return or dispose of all painting equipment on completion of the painting activities
P10 clean the work area and safely dispose of waste materials in accordance with safe working practices and approved procedures
P11 complete all refinishing activities within the agreed timescale 
P12 report any anticipated delays in completion to the relevant person(s) 
P13 complete work records as required 

Knowledge and Understanding

You need to know and understand:

**Legislative and organisational requirements and procedures **
K1 the health and safety and environmental legislative requirements specific to vehicle refinishing operations and why it is important that these are followed
K2 workplace procedures and workshop practices relevant to personal and vehicle protection before, during and after vehicle refinishing operations
K3 the importance of disposing of waste safely and the consequences of not doing so to others, the business and the environment 
K4 your workplace procedures for:
K4.1 the referral of problems
K4.2 reporting of delays to the completion of work
K4.3 the use of personal protection
K5 how to work safely avoiding damage to vehicles, personal injury and injury to colleagues
K6 the importance of leaving workshop environment and equipment in a clean and workable condition
K7 the procedures for reporting defects to workshop **tools and equipment**
K8 the importance of working to agreed timescales and keeping others informed of progress
K9 the relationship between time, cost and productivity
K10 the importance of promptly reporting anticipated delays to the relevant person(s) 
K11 the extent of your own responsibility and to whom you should report if you have problems that you cannot solve or your original specification changes
K12 the hazards associated with working on, near or with high energy electrical vehicle components
K13 the risks of causing damage to Advanced Driver Assistance System components or affecting their calibration and the consequences this could have for the vehicle’s safety
**Use of technical information**
K14 how to source and use relevant **information** for planning and progressing your work
K15 the importance of using technical **information **to inform your refinishing process
**Tools and equipment**
K16 how to prepare, check, adjust and use all the **tools and equipment** required for vehicle refinishing operations 
K17 the types and grades of abrasives and the factors governing their use for different **substrates**
K18 the importance of using extraction equipment and how these should be used
K19 the implications of cross-contamination of dissimilar metals when using abrasives and extraction equipment
**Vehicle refinishing activities**
K20 the vehicle work specification agreed 
K21 how to accurately identify the body panel substrates prior to undertaking any vehicle refinishing work 
K22 the factors governing the choice of panel preparation **methods **for the **substrate **identified
K23 how to rectify **substrate** **defects**
K24 **methods **of protecting panels, any parts adjacent to the areas being painted and the circumstances in which they should be used
K25 **methods **when masking (including paper and sheet masking) and the circumstances in which they should be used
K26 the **methods **used to prepare body panels and components prior to accepting foundation materials
K27 the importance of **substrate **cleaning and identifying the correct foundation material to ensure adequate adhesion of the refinishing system
K28 how to apply foundation and top coat materials to **substrates **using application **techniques **avoiding contamination and **defects**
K29 how to dry/cure foundation and top coat materials
K30 how to identify and rectify the faults associated with painting body panels and components
K31 the importance of following manufacturer’s instructions and using their approved methods of working 
K32 the consequences of failing to follow manufacturer’s instructions


1. *Tools and equipment *are:

1.1. brushes
1.2. rollers
1.3. aerosols
1.4. masking material dispensers
1.5. dust extraction
1.6. paint mixing and application equipment
1.7. drying/curing equipment

2. Refinishing *materials *are:

2.1. fillers
2.2. etch primers
2.3. high build primers
2.4. surfacers
2.5. anti-stone chip treatments 
2.6. anti-corrosion treatments 
2.7. cleaning agents 
2.8. conditioning agents 
2.9. adhesion promoters 
2.10. coloured primer 
2.11. direct gloss
2.12. dilutants
2.13. additives 
2.14. hardeners

3. Refinishing *methods *are:

3.1. de-greasing 
3.2. identification of substrate materials
3.3. application of filler
3.4. flatting and sanding
3.5. removing materials to a sound substrate 
3.6. feathering out 
3.7. masking 
3.8. application of foundation and top-coat materials using brush, roller or aerosol
3.9. tack off

4. **Information **sources are: > 4.1. electronically stored information > 4.2. data sheets > 4.3. inspection sheets > 4.4. specifications > 4.5. workshop manuals > 4.6. vehicle manufacturers' technical data > 4.7. material manufacturers' technical data 5. **Substrates **are: > 5.1. new panels > 5.2. repaired panels  > 5.3. original manufacturer’s finish  > 5.4. ferrous and non-ferrous materials > 5.5. plastics 6. **Techniques **used for: > 6.1. full panel > 6.2. part panel > 6.3. combination of two or more panels 7. **Defects** include: > 7.1. runs > 7.2. bleeding > 7.3. contamination > 7.4. poor adhesion > 7.5. sanding > 7.6. roller and brush marks
7.7. colour match

Scope Performance

Scope Knowledge






*This section contains examples and explanations of some of the terms used but does not form part of the standard.*
**Body panels **
These include full panels, part panel, combination of two or more panels or complete vehicle
**Heavy goods and public service vehicles**
These are medium and large goods vehicles, buses and coaches of 3500kgs gross vehicle mass (GVM) and above.
**Refinishing operations **
Covers preparation, application, drying and polishing
**Working on, near or with high energy electrical vehicle components**
Any work which does not include working on the high voltage systems.

Links To Other NOS

External Links

Version Number


Indicative Review Date

31 Mar 2024





Originating Organisation


Original URN


Relevant Occupations

Bus and Coach Body Repairer, Coachbuilder

SOC Code



Bus; coach; body; panel; refinishing; paint; brush; roller; aerosol;