How to Paint on a Wall That Shows Condensation

When painting your walls, a little condensation can lead to an acrylic nightmare. Pockets of moisture get trapped behind the paint, and as the water turns to vapor, it swells into a blister. When the blister pops, it leaves cracks and sags in your paintwork. If this happens, you'll have to sand the blister away and paint over that spot again. Prevention is the best cure, and if you want to avoid blisters, you must remove the condensation first.

Box fans
Towel
Sandpaper

Instructions

- 1
  Determine the source of the moisture. Persistent condensation is often caused by leaky plumping or poor ventilation. Poor ventilation is most likely to affect utility rooms, bathrooms and kitchens during cool months.
- 2
  Resolve the moisture problem. If it's caused by a leak, fix the leak. If it's caused by poor ventilation, place box fans in the doorways and windows of the room. If it's caused by a splash from a sink or shower, avoid using that water fixture until you've applied the new coat of paint.
- 3
  Sop up the condensation with a towel. Wait 48 hours for the wall to fully dry.
- 4
  Peel off any blisters that formed in the paint. Sand down the corners of the blister.
- 5
  Apply your paint.

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