Waterproofing Stucco

Stucco can be used on walls inside a building or to finish concrete outside. The material eventually chips off if it builds up too much moisture--for instance, if it's in a basement that's frequently damp--so it is important to waterproof the stucco to prevent this problem. The process isn't difficult for the do-it-yourselfer.

Sealant
Paint stick
Paint tape
Paintbrush
Paint roller
Paint tray

Instructions

- 1
  Place the paint tape on the edges of your stucco, such as where a stucco wall meets the ceiling. Apply the tape anywhere stucco meets with a non-stucco plane, since that does not need to be waterproofed.
- 2
  Stir the sealant until its consistency and its color are uniform with one another, using a paint stick. Thoroughly scrape off any sealant clinging to the sides of the container.
- 3
  Dip the paintbrush into the sealant. Brush the edges of the stucco wall. Your paint lines should be about four inches wide.
- 4
  Pour the sealant directly into the paint tray.
- 5
  Wet the paint roller thoroughly with the sealant. Roll it in the mixture a few times so it is well-coated.
- 6
  Roll the sealant directly onto the wall. Pay special attention to surfaces toward the ceiling so you know whether you fully coated the area.
- 7
  Apply another coat if your sealant manufacturer recommends it, and let the sealant dry according to the directions.
- 8
  Remove the paint tape once the sealant has dried.

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