How does it occur?
- Application of finish coat over puttied surfaces
- High alkalinity of surface (evident in new walls)
- Incomplete drying of putty
- Application of a thick coat of putty
Solution
Prevention
- Allow new walls to get cured for at least three months
- Apply thin coats of putty
- Always apply a primer coat after applying spot putty
- Always sandwich coats of putty with primer
- Cracks in plaster should be filled with a cement and sand mixture
Remedy
- Scrape the surface and repaint with the right surface preparation method
Other painting problems
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