Bought the house 5 years ago, at the time a sprinkler was hitting this spot of the house, I fixed that immediately and had the house professionally painted. Apparently the sprinkler damaged the original paint and it is now chipping. What can I use to remove the loose paint? I've peeled some off by hand and tried a brush. Should I use a pressure washer, wire brush or a some type of a drill attachment? The stucco is a rough texture so scraping isn't an option. Also, what primer would be recommended after I get this cleaned up?