Chimneys, Rock Walls, and Historic Masonry- Preserve Your Place: A Historic Property Owner Education Series

Join us at the Flavel House in Astoria for a look at the structures that quietly hold our historic places together: brick, stone, and mortar.

We’ll gather in the Flavel House basement, where the masonry itself becomes the classroom. Presenter Joe Herman will explain why historic masonry fails (moisture, incompatible mortar, earthquakes, vegetation, and neglect) and what proper repair looks like compared with well-intentioned modern fixes that can do lasting damage. Expect a discussion and/or examples on chimney deterioration and seismic stabilization, rock and retaining walls, and why Portland cement can harm historic masonry. You’ll leave knowing when a wall needs repair, repointing, or structural stabilization, and how to find qualified masons and preservation contractors. Whether you own a century-old home, a stone wall, or a chimney you’ve been wondering about, bring your questions for the Q&A.