Mildew buildup on exterior stucco walls can be a persistent issue, especially in humid climates. Factors such as the age of the stucco, the type of paint used, and the surrounding environment can all influence the effectiveness of cleaning methods. It's essential to consider the right cleaning solutions and techniques to avoid damaging the stucco surface. Additionally, regular maintenance can help prevent future mildew growth. Curious about the best products and methods for your specific situation? Ask Improvi.ai for personalized guidance!