Cleaning Exterior Masonry by Walter Jowers Nobody likes dirt. So, for owners of an old commercial building—one that's collected a coating of urban crud for a half-century or so—getting the exterior clean isn't just an aesthetic decision, it's an economic one. Until the place sheds its coating of dirt and pigeon droppings, chances are nobody except Larry, Daryl, and Daryl (of TV fame) will want to shop, eat, or do business at the place. And Larry, Daryl, and Daryl would try to pay in possums... In this article, I can't tell you everything there is to know about cleaning exterior masonry. When you finish reading this, you won't be ready to don a raincoat and pick up a pressure washing wand
