Priming textured wallboard is necessary for a professional finished paint project. Wallboard, or drywall, is highly absorbent, as are most types of plaster used to texture walls and ceilings. Skipping the step of priming will result in an uneven paint sheen and inconsistent coloration after the final coat of paint has been applied. You can use either an acrylic- or an oil-based primer to seal the walls and plaster and prepare the walls for painting.
Instructions
1. Prepare the project area. Remove all furniture from or move it to the center of the room. Give yourself several feet of space between the wall and any large pieces of furniture. Cover all remaining items in the room with disposable plastic sheeting. Place thick drop cloths on the floor; OnTheHouse.com suggests using drop cloths with 6 mil of thickness. Create a thick barrier that will protect flooring if a can of paint is spilled or a paint tool is dropped.
2. Use a rough nap roller to ensure the texture wallboard gets appropriate primer coverage. Pour the acrylic- or oil-based primer into a paint tray. Immerse the roller into the primer, and roll off excess paint onto the paint tray.
3. Add primer to the wall by rolling in long, horizontal strokes. Do not apply uneven pressure to the wall when rolling on primer. Inspect the wall to ensure all areas are getting coverage, including inside crevices of the wallboard's texture. Add a second coat of primer if the textured surface is absorbing most of the primer.
4. Use an angle paintbrush to trim out the perimeter of the wallboard. Dip the tip of the paintbrush in primer, and use the tip to trim out the edge of the textured wallboard. Glide the brush along the perimeter of the wallboard. Have a wet paint rag handy in case of paint drips.
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