Historic 41 Cambridge Ave. http://www.themassbayco.com/apps/photos/ Historic 41 Cambridge Ave. Finished roof Chimnies were fully flashed for a lifetime. 30-year IKO 'Harvard Slate' shingles and galvanized ridge caps add historic detail. http://www.themassbayco.com/apps/photos/photo?photoID=28895040 28895040 Rebuilt chimney Removed loose mortar and parged entire chimney with mortar wash. http://www.themassbayco.com/apps/photos/photo?photoID=28894428 28894428