Damp is the top reason new paint peels. Paint only hides it. If you do not fix the cause, the patch comes back.
Find the cause first
Check for leaking pipes, cracks in the outer wall, and water pooling near the base. Press a dry sheet of plastic on the patch for a day. If the inside fogs, the damp is coming from the wall.
Do not skip this
Painting over a wet wall traps the moisture. The paint will bubble in weeks.
Dry and seal the wall
- Fix the leak or crack.
- Let the wall dry for 7 to 10 days.
- Scrape off loose paint and plaster.
- Apply a damp-proof primer.
- Paint two topcoats.
What it costs
Expect about ₹15 to ₹30 per sq ft for damp treatment, on top of normal painting costs.