Can Knockdown Texture Be Applied to a Painted Wall?

Clean the Walls

• Wash the walls with warm water and a damp rag prior to adding knockdown texture. Do not completely soak the walls; simply clean off any grime and debris buildup. Use a dusting cloth or vacuum to clear spiderwebs and dust from cracks and corners.

Remove the Furniture

• Take out all furniture in the room, or move it as far from the wall as possible. When plastering walls, the plaster does occasionally drip and end up in places least expected. You may need several feet of walking space in front of each wall. Cover all remaining items with plastic tarps or drop cloths.

Sand the Walls

• Attach a section of sandpaper to a sanding pole. Lightly sand the entire painted wall. Wipe the walls with a damp cloth when finished to remove all dust created during this process. Sanding allows the plaster to grasp the walls and ensure adherence.

Plaster the Walls

• Plaster your walls with lightweight joint compound using a hand trowel. Add the plaster directly onto the painted walls. Apply the plaster no more than 1/8 inch thick. Some areas may even be kept bare since you will be painting over these areas once the plaster is dried. Sand the dry plaster to remove any loose areas, and paint your walls with latex paint using a rough nap roller.

Additional Tips

• Once you begin to plaster, removing the finish is very difficult. Ensure yourself this is the finish you want to keep on your walls for several years.

  If you are unsure about completing the project yourself, hire a drywall expert or faux finish artist. Ask for them to prep and plaster your walls. To save money, you can complete the paint portion of the project.

  Always wear protective eye gear and a mask when sanding walls. Breathing in the dust can cause respiratory distress.