Table of Contents
Task B-5 Prepares surface
Task Descriptor
Automotive refinishing technicians must prepare substrates and existing surfaces for the application of undercoats and topcoats. Using proper tools, materials and techniques are important to achieve a smooth transition from repaired area to existing finish.
B-5.01 - Performs initial preparation
Essential Skills: Document Use, Thinking, Continuous Learning
B-5.01 - Performs initial preparation
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
NV |
NV |
NV |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-5.01.01P |
remove residual two-way tape and decal glue |
residual two-way tape and decal glue is removed using tools and products according to job requirements and manufacturers’ specifications |
| B-5.01.02P |
clean substrate with products and cleaners, and dry surface |
substrate is cleaned with products and cleaners and surface is dried using methods to ensure a finish free of surface contamination |
| B-5.01.03P |
apply a pre-wash cleaner based on substrate and refinish material to be applied |
pre-wash cleaner is applied according to TDS, to improve adhesion and to avoid static charged flash fires |
| B-5.01.04P |
inspect substrate |
substrate is inspected for surface imperfections and surface evaluation is performed |
Range of Variables
- tools include: heat guns/lamps, rotary tools, razor blades
- products and cleaners include: soapy water, degreasers, solvents, fallout remover
- methods include: using chamois or cloths, compressed air
- surface contamination includes: dirt, tar, tree sap, bugs, waxes, paint sealants
- pre-wash cleaners include: water-based, alcohol-based, solvent-based, anti-static plastic cleaners
- surface imperfections include: stone chips, corrosion, peeling, oxidization, cracking, scratches, checking, environmental damage
- surface evaluation includes: paint thickness, chemical compatibility, adhesion
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-5.01.01L |
demonstrate knowledge of performing initial preparation of substrates and surfaces |
define terminology associated with surface preparation |
| describe the procedures used to remove dust, loose debris and moisture |
| describe the procedures used to remove residual two-way tape and decal glue |
| identify tools, products and cleaners used to remove residual two-way tape and decal glue |
| identify types of products and cleaners and describe their applications and procedures for use |
| identify types of pre-wash cleaners and describe their applications and procedures for use |
| describe cleaning techniques |
| identify hazards and describe safe work practices pertaining to surface preparation |
| identify types of surface imperfections |
Range of Variables
- tools include: heat guns/lamps, rotary tools, razor blades
- products and cleaners include: soapy water, degreasers, solvents, fallout remover
- pre-wash cleaners include: water-based, alcohol-based, solvent-based, anti-static plastic cleaners
- surface imperfections include: stone chips, corrosion, peeling, oxidization, cracking, scratches, checking, environmental damage
B-5.02 - Masks surface
Essential Skills: Thinking, Continuous Learning, Working with Others
B-5.02 - Masks surface
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
NV |
NV |
NV |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-5.02.01P |
apply masking tape and paper |
masking tape and paper are applied to protect against damage during preparation, avoiding over and under masking |
| B-5.02.02P |
apply spray mask (liquid mask) |
spray mask (liquid mask) is applied according to manufacturers’ specifications using equipment to protect areas not to be refinished from overspray |
| B-5.02.03P |
apply plastic sheeting |
plastic sheeting is applied to cover vehicle and to protect against overspray |
| B-5.02.04P |
apply vinyl tape (fine edge) |
vinyl tape (fine edge) is applied according to job requirement to prevent bridging paint and to prevent hard edges |
| B-5.02.05P |
apply edging tape behind flexible moulding |
edging tape is used behind flexible moulding to prevent defects |
| B-5.02.06P |
apply final masking materials before refinishing |
final masking materials are applied using methods to avoid hard edges |
| B-5.02.07P |
apply soft edge tape to panels |
soft edge tape is applied to panels to protect against overspray and to leave a soft edge |
Range of Variables
- defects include: bridging, peeling, overspray
- methods include: back masking, reverse masking
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-5.02.01L |
demonstrate knowledge of masking materials, their applications and procedures for use |
describe the procedures and methods used to mask surfaces |
| describe masking uses |
| identify types of masking materials and describe their applications |
| describe potential defects if masking is not done properly |
Range of Variables
- masking materials include: tapes, paper, plastic sheeting, liquid mask, soft edge tape
- methods include: back masking, reverse masking
- masking uses include: for protection (sanding, stripping), for primer, for paint
- defects include: bridging, peeling, overspray
B-5.03 - Strips surface
Essential Skills: Document Use, Thinking, Continuous Learning
B-5.03 - Strips surface
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
NV |
NV |
NV |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-5.03.01P |
protect surrounding area |
surrounding area is protected with materials |
| B-5.03.02P |
apply chemical stripper to work area using tools |
chemical stripper is applied to work area according to manufacturers’ recommendations |
| B-5.03.03P |
neutralize chemical residue |
chemical residue is neutralized according to manufacturers’ recommendations |
| B-5.03.04P |
mechanically strip work area using tools |
work area is mechanically stripped using tools according to job requirements and TDS |
| B-5.03.05P |
media blast work area using media |
work area is media blasted using media according to substrate |
| B-5.03.06P |
remove dust and residue from work area after mechanical or media stripping |
dust and residue is removed from work area after mechanical or media stripping according to manufacturers’ recommendations and jurisdictional regulations |
Range of Variables
- materials include: duct tape, cardboard, masking
- tools (for chemical stripping) include: brushes, aerosol sprays, scrapers, wire brushes, plastic sheeting
- tools (for mechanical stripping) include: dual action sanders, stripping wheels, scrapers, razor blades, putty knives, rotary tools, compressed air blower, pressure washers
- media includes: glass, sand, soda, plastic beads, crushed walnuts, dustless blasting, dry ice
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-5.03.01L |
demonstrate knowledge of stripping equipment and products, their applications, safety precautions and procedures for use |
identify methods used to strip topcoats and undercoats and describe their applications and associated safety or environmental considerations |
| identify the tools used to mechanically strip topcoats and undercoats |
| describe the effect of chemical stripping, mechanical stripping and media blasting on substrates |
| describe the procedures used to remove dust and residue from work area after mechanical or media stripping |
| identify types of media blasting |
Range of Variables
- methods include: chemical strippers, media blasting, mechanical
- tools (for chemical stripping) include: brushes, aerosol sprays, scrapers, wire brushes, plastic sheeting
- tools (for mechanical stripping) include: dual action sanders, stripping wheels, scrapers, razor blades, putty knives, rotary tools, compressed air blower, pressure washers
- media includes: glass, sand, soda, plastic beads, crushed walnuts, dustless blasting, dry ice
- substrates are: aluminum, steel, composites, plastic
B-5.04 - Sands surface
Essential Skills: Document Use, Thinking, Continuous Learning
B-5.04 - Sands surface
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
NV |
NV |
NV |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-5.04.01P |
prepare blend area |
blend area is prepared by using methods to achieve a uniform surface according to TDS |
| B-5.04.02P |
featheredge area |
area is featheredged to achieve a smooth transition from repaired area to existing finish |
| B-5.04.03P |
back sand area |
area is back sanded according to job requirements and TDS |
| B-5.04.04P |
scuff sand area |
area is scuff sanded according to job requirements and TDS to prepare for the application of undercoats |
| B-5.04.05P |
level surface |
excess primer surfacer and filler material is removed by guide coating and block sanding using the cross hatch method to achieve a level surface |
Range of Variables
- area includes: repaired area, existing finish, raw substrate
- methods include: using wet or dry sandpaper, using scuff (scratch) pads, using scuff paste, guide coating, machine sanding, manual sanding
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-5.04.01L |
demonstrate knowledge of sanding equipment and materials, their applications, safety precautions and procedures for use |
identify sanding equipment and materials, their applications and procedures for use |
| identify methods used to sand surfaces and describe their applications and associated safety and environmental considerations |
Range of Variables
- sanding equipment includes: machine sanders, sanding blocks
- materials include: scuff paste, wet or dry sandpaper, scuff (scratch) pads, guide coat
- methods include: using wet or dry sandpaper, using scuff (scratch) pads, using scuff paste, guide coating, machine sanding, manual sanding
Task B-6 Uses repair materials
Task Descriptor
Automotive refinishing technicians use repair materials such as fillers, primers, primer surfacers, gravel guards and seam sealers. The proper use and application of these products is important to set the foundation for the refinishing process.
B-6.01 - Mixes repair materials
Essential Skills: Document Use, Digital Technology, Numeracy
B-6.01 - Mixes repair materials
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
NV |
NV |
NV |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.01.01P |
mix filler with appropriate amount of hardener |
filler is mixed using mixing techniques according to manufacturers’ recommendations |
| B-6.01.02P |
measure and stir quantities of primers and primer surfacers |
quantities of primers and primer surfacers are measured and stirred according to job size and manufacturers’ specifications |
| B-6.01.03P |
shake aerosol type repair materials |
aerosol type repair materials are shaken according to manufacturers’ specifications |
| B-6.01.04P |
incorporate additives while mixing repair material |
additives are incorporated while mixing repair material according to substrate and TDS |
Range of Variables
- mixing techniques include: using a non-porous mixing board, using static mixing tip
- aerosol type repair materials include: primers, adhesion promoters
- additives include: flexible additives, accelerators, retarders, fish-eye eliminators
- repair materials include: fillers, primers, primer surfacer
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.01.01L |
demonstrate knowledge of repair materials, their applications and procedures for use |
define terminology associated with repair materials |
| identify types of repair materials and describe their characteristics and applications |
| describe the procedures used to mix repair materials |
| describe application techniques |
| describe the considerations taken for selecting repair materials that will maintain characteristics of existing substrate |
| identify types of additives and describe their characteristics and applications |
| describe role of environmental conditions on working and curing times |
| describe the limitations of repair materials |
Range of Variables
- repair materials include: fillers, primers, primer surfacer
- application techniques include: spraying, rolling, spreading
- additives include: flexible additives, accelerators, retarders, fish-eye eliminators
B-6.02 - Applies repair materials
Essential Skills: Document Use, Numeracy, Thinking
B-6.02 - Applies repair materials
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
NV |
NV |
NV |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.02.01P |
spread filler firmly and evenly over imperfections |
filler is spread firmly and evenly over imperfections using tools according to manufacturers’ specifications |
| B-6.02.02P |
select and use spray gun with recommended nozzle assembly |
spray gun with recommended nozzle assembly is selected and used according to TDS |
| B-6.02.03P |
adjust spray gun pattern, fluid delivery and air pressure |
spray gun pattern, fluid delivery and air pressure are adjusted according to spray gun and paint manufacturers’ specifications and application requirements |
| B-6.02.04P |
apply primers and primer surfacer |
primers and primer surfacer are applied according to TDS |
Range of Variables
- tools include: putty knives, spreaders, spray guns
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.02.01L |
demonstrate knowledge of applying repair materials |
describe the procedures and techniques used for applying repair materials |
| identify types of repair materials and describe their characteristics and applications |
| identify types of tools used for applying repair materials and describe their characteristics and applications |
| identify safety considerations when working with repair materials |
| explain limitations of primers and primer surfacer |
Range of Variables
- repair materials include: fillers, primers, primer surfacer
- tools include: putty knives, spreaders, spray guns
B-6.03 - Applies protective coating
Essential Skills: Document Use, Thinking, Continuous Learning
B-6.03 - Applies protective coating
| NL |
NS |
PE |
NB |
QC |
ON |
MB |
SK |
AB |
BC |
NT |
YT |
NU |
| NV |
NV |
NV |
NV |
NV |
yes |
yes |
yes |
yes |
yes |
NV |
NV |
NV |
Skills
| Reference Code |
Performance Criteria |
Evidence of Attainment |
| B-6.03.01P |
identify areas needing protective coatings |
areas needing protective coatings are identified according to manufacturers’ specifications and job requirements |
| B-6.03.02P |
clean, prepare and mask substrate |
substrate is cleaned, prepared and masked prior to application of protective coating |
| B-6.03.03P |
apply protective coating to repaired location |
protective coating is applied to repaired location as required according to TDS, OEM specifications and job requirements |
Range of Variables
- protective coatings include: paintable and non-paintable rubberized undercoating, seam sealers
Knowledge
| Reference Code |
Learning Outcomes |
Learning Objectives |
| B-6.03.01L |
demonstrate knowledge of protective coatings, their applications and procedures for use |
follow OEM specifications to determine areas requiring protective coatings |
| identity types of protective coatings |
| describe procedures used to prepare substrate prior to application of protective coatings |
| describe procedures used to apply protective coatings |
Range of Variables
- protective coatings include: paintable and non-paintable rubberized undercoating, seam sealers
- areas requiring protective coatings include: enclosed interior surfaces, exposed interior surfaces, exposed exterior surfaces, exposed seams