• This is usually caused by extended exposure to moisture, which will eventually deteriorate the stucco.
    • The most common causes are:
      1. Sprinklers hitting the wall.
      2. Water sitting at the base of the wall and traveling up the wall in a wicking action or the lack of a proper weep screed at the bottom of stucco walls.
      3. Improper drainage (water draining toward the wall).
      4. Weed whips are very bad for stucco walls because they will cause damage.