How do you waterproof stucco walls?

The most reliable option for waterproofing stucco is to use a waterproof barrier behind the stucco and then apply a waterproof paint or sealant over the stucco.

Waterproof Barrier

  1. Step 1 – Clean Base Wall. You need to begin with a clean surface. …
  2. Step 2 – Roll out Barrier. …
  3. Step 3 – Apply Barrier. …
  4. Step 4 -Add Stucco.