Once you understand how to choose the right paintbrush for your type of coating, the next step is selecting a brush that best suits the surface you’re painting. Here are some general guidelines to consider:

Brush Sizes & Shapes

Paintbrushes typically range from 1 inch to 4 inches wide and may have either an angled or flat (straight) edge. The edge style is mostly personal preference, but brush size plays a key role depending on the project.

• Large Brushes (3"–4")
  These brushes hold more paint and cover larger areas, helping you finish faster.
  They’re ideal for siding, decks, doors, and walls.

• Small Brushes (1"–1½")
  Perfect for detailed or tight spaces. Adding an angled sash helps reach corners and crevices. These brushes work well for hobbies, crafts, window mullions, and narrow trim.

• Medium Brushes (2"–2½")
  The most versatile and widely used size.

  • A flat brush in this range works great for baseboards, cabinets, furniture, moldings, railings, shutters, and gutters.

  • An angled sash brush of the same size is excellent for window frames, casings, door moldings, and cutting in along walls, ceilings, and baseboards.

Control & Quality

It’s a common misconception that smaller brushes are always easier to control. In reality, a high-quality medium brush (e.g., 2") often provides more precision than a low-quality small brush (e.g., 1½"). It can also speed up your work and leave a smoother finish.

That said, beginners should proceed with care. Cutting in around trim without painter’s tape can be challenging. To start, consider using a thin angled sash brush, which allows better control over how much paint you apply and reduces the risk of slipping onto woodwork.