A thick roller will help save time and paint the walls faster. Thick rollers can pick more paint at once and cover the larger areas. But if the painting roller is too thick, then it might leave an Orange-Peel effect on the walls. So, choosing a roller with apt thickness is crucial. Painters usually use thin rollers to paint the cupboards, the edges, and the frames, and often a moderately thick roller is used to paint the walls and ceilings. There are multiple products available, choose the roller with the right thickness for best results.