Common Paint Problems

How-To

Detailed solutions from PPG Porter® to the most common paint problems faced by both painting professionals and do-it-yourselfers.

Interior

Wrinkling:

 A rough, crinkled paint surface which forms when uncured paint forms a "skin".

Possible Causes

  • * Paint was applied too thickly (more likely when using alkyd or oil-based paints)
  • * Painting during extremely hot weather or cool damp weather, which causes the paint film to dry faster on top than on the bottom
  • * Exposing uncured paint to high humidity levels
  • * Applying top coat of paint to insufficiently-cured primer
  • * Painting over contaminated surface (e.g. dirt or wax)

Solutions

Scrape or sand substrate to remove wrinkled coating. If using a primer, allow it to dry completely before applying top coat. Avoiding temperature and humidity extremes, apply an even coat of top-quality interior paint.

Porter® System Recommendations

  • Primer: One Coat of ACRI-SHIELD Acrylic Bonding Primer No. 515
  • Finish: or more coats of Super Premium ACRI-SHIELD Acrylic Finish No. 519 Flat, 739 Satin, 619 Gloss
  • Or:
  • One or more coats of ACRI-PRO 100 Acrylic Finish No. 929 Flat, 3729 Satin, or 6029 Semi-Gloss