- When painting any surface, a very guideline to follow is: the rougher the surface to be painted, the longer the nap of the roller needs to be; the smoother the surface, the shorter the nap needs to be.
- When shopping for a roller, look for a plastic core, not a cardboard core. Due to the rough surface, you may be applying some pressure to the roller and need the added durability and strength that a plastic core provides.
- If the concrete wall is rough to very rough, look for a nap length of 3/4 to one inch. A very versatile nap length is 3/8 of an inch, this can be used on less rough concrete finishes.
- Using the correct roller provides both speed and versatility of application. Most paints are formulated for roller application to provide a smoother finish.
- When the correct roller is used, the nap will push the paint into the deep valleys of the rough surface.










