They are caused by excess moisture on walls or indirectly an issue or fault with the building that leads to excess moisture seeping through the wall and at the end leading to wall paint flakes as a result of dampness.
According to stats, 80% of exterior building paints have issues with wall dampness within the first 5 years after painting. this results in flakes. mostly it is caused by faulty plumbing connections or leaked or broken pipes. whatever the cause we developed a procedure to keep the walls free from all these issues regarding Dampness and we are willing to share.
How to treat Damp Walls before Painting.
These walls would be sporting wall flakes if they have been in that wet condition for long, the first step is to scrape off the flakes from the wall.
use white cement: mix a proportionate amount of white cement that can cover the damp area, Mix the white cement with water at a ratio of one cup of water is to four cups of white Cement.
With the use of Spray can wet the patched area so as to open up the receptive rate of the walls.
Apply the White Cement on the patched Areas
Once you are done applying white cement on the Patched Areas, Cut out Cellophane or what is popularly known as Nylon bags (transparent) use it to cover the already patched area, this will stop the moisture from reaching the final paint coat. nails can be used to fasten the nylon to the walls, tiny wall nails that wont poke out too much
Apply white cement on the the cellophane and cutting strategic points to ensure that the cement gets in between the cellophane and the wall
Leave for 24 Hours to Dry
Use sand Paper to smooth the surface, Before applying Paint on the surface
After you are done with the first Paint coat apply the final paint coat to beautify the walls.
After this is Done the issue of Damp walls and Flakes will not occur again this is because the cellophane or Nylon will act as a barrier preventing the Moisture from the wall from reaching to the second paint coat. and furthermore it gives a more classic and smooth surface.