What exterior stucco finish is recommended to resist weathering?

What exterior stucco finish is recommended to resist weathering?

• A. Smooth gloss finish
• B. A textured or sand finish that sheds water and hides surface imperfections
• C. Flat paint finish
• D. Rough finish with high gloss

Answer: (B)

A textured or sand finish is the best choice because it helps water shed from the surface and hides imperfections that could trap moisture. The rough texture creates micro-drainage paths and reduces capillary wicking, making the wall more resistant to wind-driven rain and freeze–thaw damage. It also hides hairline cracks that naturally develop in stucco, keeping moisture from finding entry points. Smooth, glossy finishes can reveal flaws and don’t shed water as effectively, while flat finishes don’t provide the same surface texture needed for good weather resistance. A textured or sand finish gives the exterior stucco a durable, weather-resistant surface.

A textured or sand finish is the best choice because it helps water shed from the surface and hides imperfections that could trap moisture. The rough texture creates micro-drainage paths and reduces capillary wicking, making the wall more resistant to wind-driven rain and freeze–thaw damage. It also hides hairline cracks that naturally develop in stucco, keeping moisture from finding entry points. Smooth, glossy finishes can reveal flaws and don’t shed water as effectively, while flat finishes don’t provide the same surface texture needed for good weather resistance. A textured or sand finish gives the exterior stucco a durable, weather-resistant surface.