Things You'll Need:
- Trowel
- Spray Bottle
- Portland Cement
- Metal Lath
- Sand
- Water
- Masonry Cement
- White Cement
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Step 1
If needed prepare the area under the stucco. This would involve framing and insulating, as well as laying building paper next cut a piece of metal lath with tin snips and use galvanized roofing nails to attach it to the studs below.
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Step 2
Remove any loose stucco around the area you are patching by enlarging the opening if need be.
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Step 3
Next mix a batch of the base coat brown stucco. The normal formula for this is 3 parts sand, 2 parts portland cement, and 1 part masonry cement by volume. Add enough water so it has the texture of wet clay.
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Step 4
Begin to patch the stucco wall with this mixture. Apply a 3/8" layer, and wet it every 4-6 hours for the next 2 days with the mist from a spray bottle. After this period let it dry. Repeat this procedure until you are within 1/8" of the surface of the non patched area. About 1 day into the process take a nail and scratch the surface of the stucco to roughen it for the next layer.
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Step 5
Now begin to patch the stucco wall with the finish coat of stucco. The standard mixture for this is 1 part lime, 3 parts sand, and 6 parts white cement. If the surrounding stucco has any tint this is the time to add it to the mixture. Add water as before.
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Step 6
Using the trowel as before to apply the finish coat even with the surrounding wall. Apply texture as needed. Let dry as before.
