How to Apply Stucco 2024

If you plan on installing a stucco Click here exterior yourself, it’s important to understand the stucco application process. Although this process differs depending on the underlying structure of your house, you should always check local building regulations before beginning work. For example, many areas have building codes that require weep screeds, which minimize the potential for water damage to your home.

home improvement – construction worker with plastering tools renovating apartment walls
How to Install Stucco on Brick or Concrete
Apply a concrete bonding agent to the exterior wall.
Once the bonding agent is fully dry, apply a 1/4- to 1/2-inch base coat of stucco. Known as the scratch coat, this layer provides a rough surface for the second coat to adhere to.

Let it dry fully before applying the next layer, which should be approximately 1/8 of an inch deep. This layer, the brown coat, functions as a strengthening layer and must harden for at least 36 hours before you resume the application process. During this time period, the surface should be misted with water periodically to prevent rapid drying, which can cause stucco to become brittle.

Next, apply the finish coat, which should be about ¼ of an inch thick. This layer is always hand-troweled and may be texturized or applied as a smooth finish. Pigment may be added to the stucco mixture prior to application to add color to the layer.

Let the finish coat harden for at least 36 hours. Mist to promote strength in the finished product.
Once all the stucco material is sufficiently dry and hard — which may take several weeks — it may be painted.