Prior to painting, steel is often abrasively blasted or roughened. The peak-to-valley height of the resulting "surface profile" is a significant aspect influencing the effectiveness of applied paint and other protective coatings. A low surface profile height may impair the coating bond strength (adhesion). Too high, and the peaks may receive insufficient covering, resulting in rapid rusting and the need for extra paint (and labor expenditures) to cover the anchor profile.