Using a scraper, remove any loose debris from the cracked area.
Use a 5-in-1 painter's tool to widen cracks that are less that ¼" wide. This will remove old stucco, paint, and other debris from the cracks and will allow the patching material to bond tightly to the damaged area.
Following the manufacturer's directions on the label, mix the appropriate ratio of stucco patch and water in an empty plastic 5-gallon container.
This product dries quickly. Mix only enough stucco patch material for a 15-20 minute application.
Using a rubber float, press the patching material into the damaged area. Spread no more than a ¼" thick layer into the crack. Allow it to set. Continue to apply stucco patch material in ¼" layers until it is flush with the existing surface.
For small cracks, fill the damaged area with paintable high quality caulking material before continuing with the stucco patch.
Before the last coat of patching material dries, remove any excess material using a clean rubber float in a circular sweeping motion. Blend the repaired area into the existing texture. Allow the area to dry.
Clean your tools after use.
Remove any final dust or debris from the finished repair.