Foam Roller for Painting – Common Reasons to Use This Tool

Paint rollers are a versatile and enjoyable tool for both amateur and professional painters. However, selecting the right roller for your specific project is essential. In many cases, foam rollers are an ideal choice for painting tasks.  

There are two primary types of paint rollers: foam rollers and nap rollers. Nap rollers are made up of numerous strands and fibers, while foam rollers offer a more affordable alternative to traditional rollers and are highly effective for various painting applications.  

Here are a few reasons why foam rollers are a great option for both exterior and interior painting projects:

Thin Paints  

Foam rollers are excellent for use with thin paints due to their high absorption capacity. The smooth surface of the foam evenly redistributes the absorbed liquid, making them ideal for latex and water-based paints. This ensures consistent and efficient coverage, delivering a smooth, uniform finish.  

Smooth Surfaces

Painters often use traditional rollers for uneven exterior walls and foam rollers for smooth interior walls, doors, and cabinets. Foam rollers glide along a smooth flat surface very easily and dispense the paint on the surfaces evenly.

Short Duration Use

Foam rollers tend to last a shorter period of time than traditional rollers. They are excellent tools for a painter who does not perform painting jobs on a routine basis. If you are someone who only paints a room every few years, foam rollers are ideal for you.

Trim Frames  

Smaller foam rollers, often referred to as picture rollers, are perfect for painting tasks involving molding, trim frames, and other detailed areas. These 3 to 4-inch rollers provide precision and ensure a clean, professional finish for smaller projects.  

Thick or Thin Makes a Big Difference  

Each roller features a specific fabric thickness or "nap," tailored for different surfaces. A thicker nap holds more paint and suits rougher surfaces, while a thinner nap is ideal for smoother finishes.  

Size and Style  

3-5mm NAP  

Thin naps ensure a smooth finish, perfect for water-based or oil-based gloss and semi-gloss paints. Designed for small paint amounts, they are ideal for doors and cupboards.  

7-9mm NAP  

These provide a very smooth finish, suitable for feature walls or areas requiring minimal roller stipple. While an all-purpose roller can be used, specialized nap rollers deliver better results.  

10-15mm NAP  

The most common choice for walls and ceilings, these hold ample paint for flat or low-sheen finishes. Quality 12mm rollers offer even coverage without excessive splatter. Professionals often prefer 20mm naps for ceilings and 12mm for walls.  

18-26mm NAP  

Thick naps, like 20mm, are designed for rough surfaces such as brick or render. They hold large paint volumes and effectively cover uneven textures.  

What Roller Width Do I Use?  

75-100mm Width  

- Interior Projects: Cupboards, door trims, windows, furniture  

- Exterior Projects: Fence posts, rails  

130-180mm Width  

- Interior Projects: Doors, small surfaces, small walls, bench tops, stairs  

- Exterior Projects: Eaves, pergolas  

230-270mm Width  

- Interior Projects: Walls, ceilings, large surfaces  

- Exterior Projects: Fences, concrete floors, brickwork  

With the right tools, you can complete all parts of your painting project efficiently. To explore the foam rollers and other painting tools available at Cohwa, visit our website or contact us today.