The most important step in prepping for exterior paint is always a pressure wash of the surfaces. The pressure washers we use blast water out at 3000 psi, so it is important to note that we typically request personal items be moved away from the house at least 6-7 feet to avoid damage. Having a clean surface is crucial to allowing the products that are applied to adhere and better encapsulate your home. Furthermore, pressure washing also removes much of the failing paint that is already flaking, peeling, or otherwise not adhering to the substrates.