Most Common painting defects in your home

The newly painted home gives a sense of freshness, newness and cleanliness. Apart from that depending upon colours used, it helps in creating moods, providing coolness, excitement and sense of completion.

Though the painting work may be completed without any problem or defect but occasionally things may go wrong, because of circumstances beyond the control of the painter, the paint manufacturer or due to certain changes in climate.

Once you paint, sometimes some defects are observed. The defect arises as paint film is subjected to chemical attack of atmosphere, sunlight, dust, and heat, all deteriorating it. It may also arise due to poor workmanship or poor material used.

Many problems can occur after painting. Sometimes, they occur simultaneously during painting. Understanding the causes of some of these defects can make the paint job easier.

Let us understand some most common painting defects in your home:

1. Blistering

Blistering or Swelling of paint is caused due to the trapping of air, moisture or solvent between the surface and paint film. Blistering is one of the several paint defects on the painted surface. Blistering1 is known as the formation of dome-shaped projections in paint or varnish films due to localised loss of adhesion between one or more coatings or between primer and putty surface.

Solution:
Remove any unstable paint layer and allow the wall to dry thoroughly. Then repaint with a recommended paint as per manufacturer’s specification.

Precaution for avoiding the defect:

  • Make sure that surface to be painted is clean and dry.
  • Allow the paint to dry completely before exposing the surface to moisture.

2. Bittiness

Bittiness is caused by dirt from the atmosphere or surface or from brushes that are inadequately cleaned or due to bits of dried-up paint that gets stirred in.

Solution:
Remove the paint and repaint using clean brushes and paint on clean surface.

Precaution for avoiding the defect:

  • Stir the paint if necessary.
  • Use new uncontaminated paint.

3. Algae/ Fungus growth

Algae and fungus can grow when the surface is continually damp and dirty. Insufficient fungicide or algaecide in the paint can also worsen the situation.

Solution:
Remove algae/ fungus by high-pressure washing. Wash again to remove any residue and allow the wall to dry before applying with recommended paint2.

Precaution for avoiding the defect:

  • If algae occurs outdoor, then remove overgrown plants from surrounding areas.
  • If there is any leakage from the concealed plumbing lines then find the source of it, as it increases moisture on the surface and algae/ mould can occur. (if this is the reason for your case, first get source detected and repaired then get the wall repainted)

4. Brush Marks

Paint Brush marks are usually visible on the final coat. When the paint is applied on the surface with a brush, sometimes bristle marks appear. These bristle marks are deep & permanent on the painted surface.Brush marks are caused due to under-thinning of paints or due to poor application of the final coat of paint or due to poor quality brush.

Solution:

  • When painting, paint evenly and lightly in the same direction. Wait until the first coat is thoroughly dried before applying the second coat.
  • Allow paint to harden for several days. Rub down the affected areas with sandpaper, wash with clean water, dry thoroughly and apply a new top coat.

Precaution for avoiding the defect:
Carefully prepare the surface, make sure the poor paint is rubbed down.

5. Peeling

Peeling off paint occurs on walls as well as on wooden or metal surface. It is the swelling of paint film/layer that is due to loss of adhesion between one or more coatings or between primer and parent surface & moisture on the surface. It is one of the most common paint defect observed on the painted surface.Peeling of paint is mainly caused by moisture on the surface, poor surface preparation, using an incorrect painting method.

Solution(For Walls):

  • Check and repair the source of water seepage.
  • Scrap off deteriorated paint surface. And ensure walls are dry before repair work.
  • Make use of dilute cement primer before repainting the surface. After adequate air curing, repaint the surface.

Precaution for avoiding the defect:

  • It should be ensured that walls are dry before painting.
  • Try to identify and eliminate the cause of moisture before starting repair.

6. Efflorescence

Efflorescence or formation of white powdery deposit on walls after painting is caused due to salts present in the building material like brick and mortar, which comes on the surface afterwards.

To know more about in detail, you can read related blog. For its solution also, you can refer the same content.

Precaution for avoiding the defect:

  • All Construction materials used for wall should be free from salt.
  • Ensure that the surface is moisture free.

7. Chipping

Chipping of paint layer or film is due to excessive use of putty or due to very thick coat of paint or defective surfaces.

Solution:
Regulate the proper use of putty and paint.

Precaution for avoiding the defect:
Follow the air curing and other procedural steps as per manufacturer’s specification.

8. Discolouration

After paint is applied, it may fade or discolour. It is caused by particles in the wall reacting with the paint when it is drying. Discolouration could also be caused by water seepage.

Solution:
If it is happening due to seepage, thencheck and repair the source of water seepage. After that replaster/paint the wall as per the condition.

Precaution for avoiding the defect:
You can visually monitor the condition of your walls. If there is some signs of water, which is causing the discolouration, then you get it checked and repaired.

9. Flaking

Flaking-off paint is due to improper application of primer coat over putty, and not being completely covered over surface. It can be also due to application of paint on insufficiently dry surfaces.

Solution:
Ensure that there are no gaps in covering putty with primer coat and also that the surface is dry &clean.

Precaution for avoiding the defect:

  • Do not use low quality paint.
  • When you are applying a second coat of primer/paint make sure the first coat is completely dry.

Conclusion

Hopefully this content is useful for making you aware about some common defects of painting which you may have faced previously. Through this content we want to give you idea about the defects, its solution and precautions to avoid the extra cost and time factor on repairs.

1 Comment

  • Anurag Nopany

    Great information.

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