There are plenty of problems that appear after painting process which include :

1- Chalking : Appearance of sediments on the surface of paint that look like chalk.
Reason: Resin material disintegration due to being exposed to strong sun rays.

2- Milking: Milky coat with white shape.
Reason: Applying the paint during the existence of high humidity.

3- Cracking: Paint cracking
Reason: Cracking in the surface itself due to the application of mortar or building lagging.

4- Change of color: Change of the final color into light or pale color.
Reason : Ultraviolet rays effect or usage of non-coloration resistance paint.

5- SAGGING : Increase in paint liquefaction.
Reason: Large increase in applying paint, or nearing sprayer, or increase in dilution of paint.

6- Orange Peel: Paint agglomeration in the form of orange peel after spraying.
Reason: Applying thick painting without dilution or the evaporation of the dissolving material more quickly or using unsuitable roller.

7- Painting interdistance: Interdistance of paint coat from each other forming lines that make the paint coat or the surface beneath it appear.
Reason: Applying paint over dust, dirt, grease or silicon.

8- Pimples: Small or big bubbles on the paint surface.
Reason: Detention of the solvent or applying paint over oil, humid surface or salts.

9- Peeling off: Paint peeling and appearance of pimples on the surface along with the appearance of powder sediments and salts.
Reason: Humidity evaporation from the concrete which picks up on its way out the disintegrable salts from the upper surface and leaves them on the paint surface.

10- Crust Formation: Crust formation inside paint container before usage.
Reason: Storing paint in unsuitable way and not closing the containers tightly.