What tool is best suited for achieving a smooth stucco finish?

A trowel is the best tool for achieving a smooth stucco finish because it allows for precise application and manipulation of the stucco material. Trowels come in various sizes and shapes, which enable the contractor to spread the stucco evenly and create a consistent surface texture. The flat, smooth blade of a trowel is particularly effective for finishing the surface, as it can be used to press the stucco into place, eliminate any defects, and provide a uniform finish as required by the specific aesthetic desired.

In the context of stucco application, the trowel's ability to create clean edges and smooth out bumps or imperfections is crucial. This results in a professional-looking finish, which is important for both durability and visual appeal in exterior wall applications.

The other tools listed have their own specific uses but do not provide the same level of control or smoothness for finishing stucco. A brush may be used for applying primers or paints but is not effective for smoothing stucco. A float is typically used to finish or even out the surface, but it may not achieve the level of smoothness that a trowel can provide. A spatula is generally too small and less suited for large surface areas like walls, making it unsuitable for