Primer Surfacer Application

PD-0520 Primer Surfacer ApplicationThis standard operating procedure (SOP) covers the process for applying a primer surfacer during a repair. Before beginning any repair, it is important to always wear the recommended safety protection required for the job.


PD-0520: PRIMER SURFACER APPLICATION STANDARD OPERATING PROCEDURE


  1. Achieving Proper Adhesion
    To achieve proper adhesion of a primer surfacer, its necessary to first prepare the repair area properly.
  2. Sand
    To begin, sand all recessed areas and panel edges with a red scuff pad.
  3. Clean Repair Area
    Then wash area with an appropriate PPG cleaner being sure to avoid spraying the cleaner directly on the body filler. Completely dry with a clean cloth.
  4. Masking
    Next, mask off the adjoining areas as necessary to protect from any overspray.
  5. Apply Self-Etching Primer
    Then, apply a self-etching primer to any exposed bare metal areas, following the product’s proper application procedures.
  6. Mix Primer Surfacer
    Next, mix the primer surfacer following the product’s instructions. If you’re not planning on applying a primer sealer after the surfacer, be sure to mix the recommended G-shade for the vehicle color being repaired.
  7. Apply First Coat of Primer Surfacer
    The first coat of the surfacer should be applied medium wet and extend just beyond the repair edge.
  8. Apply Additional Coats of Primer Surfacer
    Then apply 2-4 additional coats, staying within the repair area to minimize its size. This is called “reverse priming.” Allow each coat to flash to a uniform, dull appearance before applying the next.
  9. Flash and Dry
    After the primer has flashed completely to a matte finish, allow to air dry at the ambient temperature or force dry according to the product’s instructions.
  10. Final Sanding
    Once dry, you’re ready to sand the primer surfacer, following the recommended procedures.

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