Yes, you absolutely can roll water-based paint. It is a common and effective method for applying this type of paint to various surfaces.
Applying water-based paints, also known as latex paints, with a roller is a standard practice in painting projects, from walls and ceilings to furniture and trim. The key to success lies in choosing the right tools for the job.
Choosing the Right Roller Cover
According to painting best practices, oil- or water-based paints are best applied using knit roller covers. This is because knit covers feature a more “open” fabric construction. This design allows the cover to pick up and release greater amounts of paint, leading to more efficient coverage and a smoother finish, especially on larger areas.
| Paint Type | Recommended Roller Cover | Reason |
|---|---|---|
| Water-Based | Knit | Picks up and releases more paint efficiently |
| Oil-Based | Knit | Picks up and releases more paint efficiently |
Tips for Rolling Water-Based Paint
- Select the correct nap size: The nap (the length of the roller cover fibers) should match the surface texture.
- Smooth surfaces (new drywall, plaster): 1/4" - 3/8" nap
- Lightly textured surfaces: 3/8" - 1/2" nap
- Moderately to heavily textured surfaces: 1/2" - 3/4" nap or larger
- Load the roller properly: Dip the roller into the paint tray, rolling it back and forth on the sloped section to evenly saturate the cover without dripping.
- Use consistent pressure: Apply even pressure as you roll to ensure uniform coverage and avoid streaks.
- Work in sections: Roll the paint onto the surface in manageable sections, usually starting with a 'W' or 'M' pattern, then filling it in.
- Maintain a wet edge: Always roll back into the previously painted section while it is still wet to avoid lap marks.
Using the appropriate roller cover, like a knit one recommended for water-based paints, along with proper technique, will help you achieve a professional-looking finish on your project.
