What is the best type of paint brush for applying paint on rough surfaces?

The best type of paint brush for applying paint on rough surfaces is the oval varnish brush. This type of brush is designed with a wider surface area and bristles that are typically soft and flexible, allowing it to effectively reach into the irregularities and textures of a rough surface. The oval shape helps in covering more area in a single stroke while providing the ability to work the paint into crevices and corners, ensuring even application.

The rounded bristles of an oval varnish brush allow for good paint retention, which is particularly beneficial when dealing with uneven surfaces. The design permits a smooth and controlled application, reducing the risk of streaks or missed spots. For tasks involving rough surfaces, this kind of brush enhances the overall finish and provides better results compared to the other options available.