Before painting, you should always power wash (pressure wash) your house before painting it; this is considered a crucial step in preparing the surface for paint, ensuring it adheres properly and lasts longer by removing dirt, grime, loose paint, and other debris that could interfere with the paint's adhesion. https://youtu.be/7Hzb2uoiM-4?si=ww6PYO0H0biGA2ad