Conventional stucco over masonry surfaces may be applied with two or three coats. Two-coat systems over masonry consist of: first coat = 3/8 inch thick and finish coat = 1/8 inch thick; or over cast concrete consist of: first coat = 1/4 inch thick and finish coat = 1/8 inch thick.
How Thick Is Stucco?
Stucco is a type of plaster that is commonly used as an exterior wall siding material. It is a cement-based material which is applied in multiple layers and typically finished with a smooth, textured finish. Stucco is an excellent material for exterior walls due to its durability and resistance to moisture and temperature changes. However, one of the most common questions people have regarding stucco is “how thick is stucco?”
The thickness of stucco can vary depending on the application, but typically it is applied in three coats, each coat being 3/8” thick. The first coat, called the scratch coat, is applied to the substrate and scratched to provide a bond for the second coat. The second coat, called the brown coat, is applied and smoothed to provide a flat, even surface. The third coat, called the finish coat, is applied to provide the desired texture and color. The total thickness of a stucco application is usually between 9/16” and 5/8”.
In addition to the three coats mentioned above, a reinforcing mesh may be required for certain applications. The mesh may be applied to the substrate before the stucco is applied, or it