Peeling Defect in Paint: Precautions & Repairs

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The newly painted home gives a sense of freshness, newness, cleanliness and sense of completion. It is used as final finish to any surfaces and also as a coating to protect and decorate the surface. However, deterioration of the paint earlier to its rated life is considered as a failure of the paint.

Several defects like, blistering, bittiness, cracking, etc. are observed in painting, either during or after the paint application. These defects arise due to either effect of atmosphere, sunlight, heat, humidity and dust or individually or jointly deteriorating it. Among them, peeling is one of the most common defects observed.

0308180024-01-Peeling-of-Paint-due-to-Dampness-shutterstock_10211947
Courtesy - Shutterstock

Peeling is a loss of adhesion where the paint film peels away from the surface like from wall, wooden, metal, etc. It is caused due to the moisture on the surface and poor surface preparation and in a lot of cases due to poor surface preparation by the previous painter. Applying new paint film may not improve the adherence of the old paint film. We have already discussed causes of peeling in our recent article.

Precautions to Prevent Peeling on Painted Surface:

  • Ensure that walls are dry before painting.
  • Try to identify and eliminate completely the cause of moisture.
  • Execute proper waterproofing system before painting.
  • Use correct coating system and specification to get clean and uncontaminated surfaces.
  • Check and repair water seepage.
  • Use an alkali-resistant sealer.

Tips for Fixing or Repairing Peeling:

  • First, identify and eliminate the sources of moisture.
  • Scrap all the loose paint from the substrate.
  • Clean the substrate and make sure it is free from contamination.
  • Use the suitable primer followed by recommended top coat.

For Plaster Surface:

0308180024-02-Peeling-of-Paint-on-Wall-_-shutterstock_554985334
Courtesy - Shutterstock

First, remove the peeling paint with scraper or putty knife.  Then start sanding with fine-medium sandpaper to remove any remaining peeling paint. Sand the entire area until the wall is clean and fairly even. Used oil based primer. When the primer is dry, you can repaint the wall.

For Metal Surface:

0308180024-03-Peeling-of-Paint-on-Metal
Courtesy - Freeimages

First remove the metal of any contaminants, such as dirt, oil, etc., and treat them with an etching liquid. Then apply a galvanized metal primer after the cleaning the surface and repaint with high quality paint.

For Wooden Surface:

0308180024-04-Peeling-of-Paint-on-Wood
Courtesy - Freeimages

Remove all loose paint with wire brush or scraper. Sand rough edges and apply appropriate primer. Repaint with two coats of a high-quality acrylic latex paint.

Hence you should be careful during or after the painting work so that this type of defect does not occur. Understand properly the causes of peeling and take required precautions. Your painted surface has a defect free life.

 Also Read:

Basic Components of Paint
Different Types of Linseed Oils are Used in Paint
Different Types of Primer Used in Painting
4 Simple Steps for Application of Distemper

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