Rinse the stucco with a garden hose to remove loose dirt
Mix warm water with a mild detergent
Apply the cleaning solution with a soft-bristle brush or sponge
Scrub gently in small sections
Rinse thoroughly with clean water
Use a low-pressure washer only if needed
Keep the pressure low to avoid damaging the stucco
Treat mildew or mold with a diluted bleach solution or stucco-safe cleaner
Test any cleaner on a small hidden area first
Avoid harsh chemicals and abrasive tools
Allow the stucco to dry completely after cleaning