Q:

What is the mixing ratio for stucco?

A:

Quick Answer

The mixing ratio of stucco is to use at least 3 cubic feet of plaster per bag of cement for the scratch coat and a maximum of 5 cubic feet per bag of cement for the brown coat. Water is added to the mixture as needed.

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What is the mixing ratio for stucco?
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Full Answer

The scratch coat is added first and is the thickest of the coats, normally around 1/2 inch. The brown coat is then added, building the thickness to 3/4 inch. The last coat of stucco applied is the finish coat, manufactured stucco, which is premixed and requires only water. The three layers require a minimum thickness of 7/8 inch over frame construction.

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