Finally, a finish coat is put on with a hawk and trowel and it can be applied in a variety of textures. This layer is applied with a darby, or long trowel, to make sure the cement is applied evenly. Next comes the scratch coat, which is a base layer of field-mixed Portland cement, sand, lime, and water with a series of horizontal lines scratched into it. Then a layer of furred chicken wire (meaning it sticks off the wall a little bit) is applied. More specifically, a lath of an asphalt-infused paper is applied over a weather-resistant barrier. The finish coat is not considered a step because it is needed on every type of application that is used, so they are mainly referring to the stages up until the finish coat. In industry terms - lath, scratch and brown. Three coat is the original stucco process, consisting of paper and wire, a scratch coat, a brown coat, and a finish, or “top” coat. How Is Tape Used in Stucco Applications?.Common Problems with Stucco and Home Building.Let’s take a look at each technique as well as the advantage that each has to offer: It can be applied with either one coat or three coat process, but there is some confusion about the methods. Stucco provides a durable, low maintenance finish that adds lots of character to a house.
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