When you have a crack in your exterior stucco, the repair method will be different depending on the shape and size of the crack. Remember that once you do this repair, if it doesn’t stick well to the exterior, this will only make things worse and there will be more water leaks.
To repair a crack at your exterior stucco, the first thing you need to do is to remove the stucco around the crack, to make an open area slightly larger than the size of the crack. You can do this by using a chisel and a hammer. After making sure your opening is the sufficient size, you must clean the area to be repaired first. You can do this with a brush. After that, for narrow cracks, you can use a stucco repair caulk. Just fill the crack with caulk and smoothen it as you fill the gap. For larger cracks, you need to use a stucco patching compound