The term one coat stucco refers to a blend of Portland cement, sand, fibers, special proprietary chemicals, and water. What Is One Coat Stucco & What Is The Benefit? As a result, the extra materials and labor make three-coat more expensive than the one coat option. It can take weeks for each layer to be applied and cure. Since it is twice as thick as one coat it’s better able to hold up to wear and tear. The big advantage of three-coat stucco is its strength and durability. These coats come in a range of colors so no additional painting is needed. 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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March 2023
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