Painters, both professionals and do-it-yourselfers alike, know how helpful blue tape for painting can be when it comes to achieving professional results. When you're painting a room or an area in your home, one of the most effective ways to get neat, Professional-looking lines is with painter's tape. This special tape serves as a barrier on surfaces you don't want to be painted, letting you work quickly without worrying about making mistakes essentially, it helps you to paint between the lines!