Repair Procedure
Basecoat Refinishing
Content Topics
| 2 Authoritative Oganizations and Technical Groups |
2.1 ASA Position on Refinish and Basecoat
Basecoat and Refinish Time Procedures
2.2 Motors Guide
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2.3 PPG's Blend Panel Guide
Procedure and Recommendations
2.3 Refinishing both new and repaired panels
PPG has developed standard process documents for refinishing both new and repaired panels. These
documents provide a step-by-step overview of the necessary
procedures and products that are required to properly refinish either type of panel. Originally intended
for standardizing repair methods, these documents can be used to educate estimators/appraisers on the
differences between the two types of refinish.
Here is the Procedure and Recommendations directly from PPG
| Process – New Ecoat Panel | Process – Repaired Panel | ||
1. Inspect part and repair any damage. If bare metal is exposed apply etch primer (D8099) only to bare metal area. 2. Clean with wax and grease remover D837 to remove solvent soluble contaminants followed by SX1005 Waterborne Cleaner to remove water soluble contaminants. Dry thoroughly. 3. DA sand black OEM primer with P400 grit Imperial Hookit II on painter pads (05251 & 05274). Remove as little e-coat as possible to attain a uniformly dull finish. All edges and hard to reach areas must be scuffed with a 3M maroon Scotch-Brite pad (07521). 4. Mask vehicle as necessary to protect vehicle from overspray 5. Blow away sanding dust while wiping with a clean cloth 6. Thoroughly wash off all traces of sanding paste with clean water 7. Clean with wax and grease remover D837 to remove solvent soluble contaminants followed by SX1005 Waterborne Cleaner to remove water soluble contaminants. 8. Tack off all panels 9. Apply approved Sealer. Use G-Series Shades of Gray sealer D8085) recommended for the basecoat color. 10. Apply number of coats of basecoat color as indicated by sprayout card 11. Lightly tack off all panels after sufficient flash time 12. Apply 2 coats of clear (D8150) to prepared areas.
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1. Featheredge paint – Initially DA sand the featheredge area with P320 grit Imperial Hookit II on (05251) pad, finish sanding using painter pads combo 05251 & 05274). 2. Scuff sand all recessed areas and panel edges with 3M maroon Scotch-Brite scuff pad (07521) for adhesion of primer surfacer 3. Apply Self Etching primer to bare metal areas (D8099). 4. Clean with wax and grease remover D837 to remove solvent soluble contaminants followed by SX1005 Waterborne Cleaner to remove water soluble contaminants. Dry thoroughly. 5. Mask vehicle as necessary to protect vehicle from overspray 6. Apply 2-3 coats of primer surfacer to the repair area a. Apply surfacer just beyond edges of repair area to minimize size b. Use reverse priming technique by covering the largest area with the first coat and the following coats within that area c. Allow each coat to flash until uniformly dull before applying next coat d. Allow the primer surfacer to air or force dry according to the product sheet for that surfacer 7. Apply 3M Dry Guide Coat over primer surfacer 8. Final sand the repaired area wherein color will be applied a. Check hand block with P320 grit Imperial Hookit II for major imperfections b. DA sand with P400 grit Imperial Hookit II on painter pads (05251 & 05274) c. Finish DA sand with P600 grit Imperial Hookit II with (05251 & 05274) pads 9. Sand the remainder of the panel(s) a. DA sand with damp 3M Trizact P800 grit (02063) on painter pads (05251 & 05274) b. Hand sand all edges and areas where a DA won’t fit the damp 3M Trizact P800 grit affixed to a hand pad (05292) c. Sand everywhere the clearcoat will go - edge to edge of all panels involved 10. Blow away sanding dust while wiping with a clean cloth 11. Thoroughly wash off all traces of sanding paste with clean water 12. Clean with wax and grease remover D837 to remove solvent soluble contaminants followed by SX1005 Waterborne Cleaner to remove water soluble contaminants. Dry thoroughly. 13. Tack off all panels 14. Apply approved Sealer. Use G-Series Shades of Gray sealer( D8085) recommended for the basecoat color 15. Apply number of coats of base color as indicated by sprayout card 16. Use color blender (D895)and blending solvent (D8753) on metallic colors 17. Lightly tack off all panels after sufficient flash time 18. Apply 2 coats of clear (D8150) to repaired areas |
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| Materials – New Ecoat Panel | Materials – Repaired Panel | ||
D8099 Etch Primer D837 Wax and Grease Remover SX1005 Waterborne Cleaner D8085 Sealer BC Basecoat Color D8150 Clearcoat 3M maroon Scotch-Brite Pad (07521) P400 Grit Sandpaper 05251 3M Hookit II Pad 05274 3M Hookit II Pad Clean towels Masking Materials Tack Rag |
D8099 Etch Primer D837 Wax and Grease Remover SX1005 Waterborne Cleaner D8085 Sealer BC Basecoat Color D8150 Clearcoat 3M maroon Scotch-Brite Pad (07521) P400 Grit Sandpaper 05251 3M Hookit II Pad 05274 3M Hookit II Pad Clean towels Masking Materials Tack Rag 3M Dry Guide Coat D8005 Primer Surfacer D895 Color Blender D8753 Blending Solvent P320 Grit Sandpaper P600 Grit Sandpaper P800 Grit Sandpaper Trizact P800 Grit Sandpaper 05292 3M Hand Sanding Pad |
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