Apply fillers and foundation materials in an automotive environment

Business Sectors (Suites): Vehicle Paint Refinishing
Developed by: IMI
Approved on: 30 Mar 2023


This standard is about identifying substrates and mixing and applying fillers and foundation materials to vehicles.

Performance criteria

You must be able to:

P1 use the appropriate personal protective equipment when carrying out the preparation and application of foundation materials 
P2 protect the vehicle and its contents effectively when carrying out the preparation and application of foundation materials
P3 support the preparation and application activities by reviewing:

P3.1 foundation material data
P3.2 work instructions
P4 prepare, check and adjust all the equipment required, following manufacturer’s instructions, prior to use
P5 apply the correct type of fillers and stoppers to rectify substrate defects, when necessary
P6 promptly and accurately report any unrecorded damage to substrates and ancillary equipment to the relevant person(s) 
P7 mix all the foundation materials required following health and safety requirements and using:

P7.1 suitable compatible materials
P7.2 the approved method
P7.3 the approved equipment
P8 apply all the foundation materials required following health and safety requirements and using:

P8.1 the approved method
P8.2 the approved equipment
P9 dry and cure foundation materials following health and safety requirements and using:

P9.1 the approved method
P9.2 the approved equipment
P10 ensure the finished surface is suitable to accept the next process
P11 dispose of waste materials to conform with legal, environmental and workplace requirements
P12 leave tools, equipment and work environment in a clean and serviceable condition, as appropriate
P13 complete all preparation and application activities within the agreed timescale and to an agreed quality control process
P14 promptly report any anticipated delays in completion to the relevant person(s) 

Knowledge and Understanding

You need to know and understand:

K1 the health and safety legislation and workplace procedures relevant to workshop practices and personal and vehicle protection

K2 the importance of disposing of waste safely in compliance with any relevant environmental procedures and the consequences of not doing so to the business, others and the environment
K3 the importance of selecting, using and maintaining the appropriate personal and vehicle protective equipment when preparing and applying foundation materials
K4 the vehicle work specification agreed
K5 your workplace procedures for:

K5.1 the referral of problems
K5.2 reporting of delays to the completion of work
K5.3 the use of personal protection
K6 the requirements for protecting the vehicle and contents from damage before, during and after preparing and applying foundation materials
K7 the importance of working to agreed timescales and keeping others informed of progress
K8 the relationship between time, cost and productivity
K9 the importance of promptly reporting anticipated delays to the relevant person(s) 
K10 how to prepare, check and adjust all the equipment required for the preparation and application of foundation materials
K11 how to select use and adjust measuring equipment, paint mixing and application equipment, heating and drying equipment (including spray booths), fume and dust extraction, air supply systems and air fed breathing apparatus
K12 spray gun faults, their cause and their rectification
K13 how to mix and prepare foundation materials
K14 the properties of foundation materials
K15 the factors affecting the choice and use of foundation materials
K16 the principles of paint mixing and the importance of the right additive in the correct ratio
K17 the curing and drying recommendations for various fillers and foundation materials
K18 how to find, interpret and use sources of information relevant to the mixing and application of foundation coatings

K19 how to condition and clean substrates prior to the application of foundation coats
K20 how to rectify substrate defects
K21 how to apply foundation coatings
K22 how to avoid application defects
K23 how to dispose of waste materials in compliance with any environmental requirements/legislation and workplace procedures
K24 how to work safely avoiding damage to vehicles, injury to yourself and injury to colleagues
K25 the importance of viscosity and its effect on the surface finish
K26 the importance of cleaning and using the correct foundation material to ensure adequate adhesion of the paint system
K27 the manufacturer's approved instructions for working when applying foundation materials
K28 the implications of not following an agreed quality control process


Scope Performance

Scope Knowledge





Links To Other NOS

External Links

Version Number


Indicative Review Date

30 Mar 2026





Originating Organisation


Original URN


Relevant Occupations

Automotive Paint Technician, Engineering, Senior Automotive Paint Technician, Vehicle Trades

SOC Code



Apply; filler; foundation; topcoat; materials; substrate; automotive; environment