Which professional should be consulted for persistent efflorescence issues?

A masonry consultant should be consulted for persistent efflorescence issues because they possess specialized knowledge in masonry materials, construction techniques, and the chemical processes that lead to efflorescence. Efflorescence is a crystalline deposit of salts that can appear on masonry surfaces due to the migration of moisture through the material. A masonry consultant can analyze the situation, identifying the sources of moisture and the types of salts present, and provide tailored recommendations for remediation and prevention. Their expertise allows them to address the unique aspects of masonry that other professionals may not be as familiar with, ensuring an effective solution to the problem.

In contrast, while architects design structures and may have a general understanding of materials, they aren't usually involved in the technical assessment of efflorescence. Structural engineers focus on the load-bearing aspects of a building and may not deal directly with surface issues like efflorescence. General contractors manage the overall construction process, but they may not have the specific expertise required to diagnose and address the underlying causes of efflorescence effectively. Thus, a masonry consultant is the most appropriate professional to consult in this situation.