Mike Lamb Posted March 1, 2011 Report Posted March 1, 2011 This 100 year old roof is black. Was it manufactured this way? Or pollution? The color is very consistent. Click to Enlarge 57.17 KB Click to Enlarge 52.84 KB Click to Enlarge 76.05 KB
Bill Kibbel Posted March 1, 2011 Report Posted March 1, 2011 The color was intentional. Adding color to clay roofing tiles became popular in the late 19th century. To create that black color, a manganese solution was poured over the clay before firing.
Mike Lamb Posted March 2, 2011 Author Report Posted March 2, 2011 This is the house just east of the Robie House in Hyde Park. I don't think I have ever seen a black clay roof in Beverly.
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