Built primarily in the 1960’s, mid-century modernist concrete buildings are now at the age when we regard many as historic or architecturally significant (and thus as deserving of careful restoration and stewardship), but also at an age where many now exhibit significant deterioration. In this presentation, Matthew Bronski describes the most common maladies and deterioration mechanisms that can befall exposed concrete facades, outlines investigative and diagnostic approaches, and discuss the pros and cons of different rehabilitation treatment options, and the importance of tailoring the treatment to the malady.