What type of joint is not recommended for areas with heavy rains, high winds, and temperatures?

Raked joints are typically not recommended for areas with heavy rains, high winds, and fluctuating temperatures due to their design and the way they interact with moisture. A raked joint leaves a recessed area in the mortar between bricks or stones, which can trap water and make it more susceptible to water penetration and potential damage. This design can also allow for the entry of wind-driven rain, leading to issues such as efflorescence, mold growth, and even structural deterioration over time.

In contrast, other types of joints, such as concave, running, and stacked joints, are designed in a way that can provide better resistance against weather elements. For instance, concave joints are rounded and tend to shed water more effectively, while running joints have a smoother surface that doesn't collect as much moisture. Stacked joints also have a lesser tendency to trap water, thus offering better performance in adverse weather conditions.

Overall, the characteristics of a raked joint render it less suitable for climates subject to heavy rainfall and wind, as it does not adequately protect the structure from the elements.