Choosing the Correct Roller Cover for Your Job

When selecting a rollercover, the two most important factors to consider are: the paint sheen and the nap height.

Paint Sheen:

The sheen is the glossiness of a paint finish.

Gloss or Semi-Gloss Paint

Glossy paints have a very high sheen and will tend to show more lint on the roller surface. Therefore, when using a gloss or semi-gloss paint, choose a shed-resistant woven cover. The fibers that make up the woven fabric are locked into the backing with a tight, "double lock" process providing a smooth and virtually lint-free finish.

Flat, Eggshell, Or Satin Paint

A knit roller cover is recommended when applying flat, eggshell, or satin paints and stains. Knit roller covers can pick up and release higher amounts of paint than woven fabrics because the fibers have a looped backing with a single pass-through process resulting in a more "open" fabric. However, if you’re looking for a finer, professional-quality finish, a shed-resistant woven roller cover is also recommended with flat or satin paint.

Microfiber and foam roller covers can also be used. You can achieve spray-like results with both of these roller covers when applying any type of paint, varnish, or enamel. They are great to use on cabinets, doors, and other smooth surfaces.

Nap Height:

Nap height is the length of the fibers that extend from the backing and carry the paint to the wall.

Smooth Surfaces

For smooth surfaces, choose a shorter nap (3/16" or 1/4") to apply the paint evenly. Because a shorter nap picks up less paint, it is common for some painters to "bump up" to a longer nap for increased production. While this can be a good idea to speed-up your painting project, it is important to note that higher naps may leave a textured look on a smooth surface. Always remember to select a nap height that will provide you with your desired finish regardless of the paint pick up and release capabilities.

Rough Surfaces

Rough surfaces require a higher nap (3/4" to 1-1/2") so the long fibers can reach into the valleys of the texture. Higher nap heights are great for textured plaster or stucco, siding, decks, concrete block, brick, and corrugated metal. Long nap heights offer great paint pick up and release, which makes getting into all the cracks and crevices of the surface easy. Remember, the rougher the surface, the higher the nap to make your job easier.