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Application Guide - Troubleshooting

Pin Holing


Tiny holes in the finish caused by surface porosity or other imperfections in the substrate. Pin holing is sometimes confused with, or inaccurately described as, solvent popping.


Causes:

  • Imperfections in the substrate

  • Substrate surface porosity

  • Insufficient amount of reducer


Solution:

  1. Clean surface with Awlgrip Wipe-­Down Solvent (NA/AP: Awlprep T0008 or Awlprep 400 T0170; EU: Surface Cleaner T0340).
  1. Sand down to smooth surface, re­clean with Awlgrip Wipe-­Down Solvent (NA/AP: Awlprep T0008 or Awlprep 400 T0170; EU: Surface Cleaner T0340), and tack off the surface.
  2. Squeegee or knife apply Awlquik Sanding Surfacer into the pinholes.
  3. Smooth sand the surface, clean with Awlgrip Wipe­-Down Solvent (NA/AP: Awlprep T0008 or Awlprep 400 T0170; EU: Surface Cleaner T0340) and tack off surface. Seal with 545 Epoxy Primer and re–apply topcoat.

Prevention:

Inspect the surface and correct porosity or surface imperfections in the substrate before applying the topcoat.