Before our Team of professional painters in Cape Cod paint the exterior walls or any surface of your home, we will power wash them to make sure they are free of mildew, oil, dust, dirt, loose rust or other contamination to ensure good adhesion. During our pressure-washing projects, we will use a special outdoor bleach-based cleaner to eliminate every last trace of dirt. Improperly prepared surfaces can result in reduced coating integrity and service life. Up to 85% of all coatings failures can be directly attributed to inadequate surface preparation, which affects coating adhesion.