Roller covers come in different thickness (1/4″, 3/8″, 1/2″ nap pile). When should I use one or another?
A. Several factors should be considered when selecting the right roller cover. Viscosity of the product, porosity and texture of the substrate, as well as desired finish. A more viscous paint will require a cover that can hold more product. In these cases, a heavier nap of 1/2″ or greater may be needed. Also, when the surface is porous or textured, a heavier nap covers would be needed. However, when the surface is very smooth and you want to maximize the overall sheen and finish, a thinner nap, such as 1/4″ or even a mohair 3/16″, may be recommended. Ultimately, refer to the product data page and/or product label for a recommendation on which type of cover to use. Be sure to stay within the recommended range. (1/4″, 3/8″, 1/2″ nap pile).
