How to Apply Stucco from Plaster
Old plaster walls are notorious for being wavy, scarred and uneven. One way of dealing with a bad plaster wall is to cover it in stucco. Thick, cement-like stucco, textured to your liking, will make those ridges look like part of the design. If you've never worked with stucco before, it's a good idea to practice your technique first, so you can determine how you want to texture it. Does this Spark an idea?
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Instructions
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Roll flat sealing primer over the plaster wall, in a thick, smooth layer. Let it cure for at least a day.
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Spread stucco onto the surface with a trowel, starting at the top of the wall. Spread it over an area as large as you can easily reach from one spot. Make it as thick as you can while keeping it on the wall (generally about 1/2 inch).
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Texture the stucco with the trowel, according to your preferred design. One standard method is to press the trowel flat against the wet stucco and pull it outward, to create a field of small peaks. Other possibilities include swirling the stucco with the trowel to make intersecting circles, or just smoothing it over randomly to give a stone-wall look.
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Lay stucco over another section after you've textured the first. Work your way over the whole surface, in sections, until the whole wall is covered. Let it set for three or four days before you paint.
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