Similar to Sand finishing, Exposed aggregate has a clean and neat look to it with the abundance of pea gravel that covers the entire surface. The most important factors in concrete finishes are, looks and durability. With exposed aggregate, you have the best of both world. In time, most exterior concrete slabs will eventually turn into an exposed finished look. This is due to exposure to the elements and the lack of maintenance. But with Exposed aggregate, it’s already been intentionally treated to have a consistent pea gravel look without the blotchiness of aging and weather damage.