How to Create Rough Plaster Walls
- 1). Apply a coat of acrylic bonding agent to the wall with a paintbrush. Allow the bonding agent to dry 24 to 48 hours.
- 2). Mix 1 part powdered lime and 2 1/2 parts sand in a mixing trough with a trowel. Form a cone shape with the lime and sand mixture.
- 3). Make a hole the depth of the cone in the center of the cone of lime and sand with the handle of the trowel.
- 4). Fill the hole with water and mix the lime and sand with the water. Add water slowly until you achieve a pancake batter consistency. Use a trowel to mix the lime, sand and water. Allow it to thicken for approximately 15 minutes. This is the plaster mixture.
- 5). Spread an approximately 3/8-inch thick coat of the plaster mix onto the wall with a trowel. Even out the coat with a wooden float by rubbing it across the surface of the wall. Allow the plaster coat to dry for 24 hours.
- 6). Mix a second batch of plaster in the same manner as the first batch only this time, use 1 1/2 parts sand to 1 part lime.
- 7). Apply the second batch of plaster onto the wall by dragging a trowel over the surface intermittently to add patches of texture over the wall until you achieve the desired rough effect.
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