Chimney Problem: Leaks in the Attic
A damaged chimney crown and cracked mortar may cause dampness and problems in the attic, as well as general deterioration. Before problems spread throughout the masonry and become costly and dangerous, repair the chimney crown and the mortar between your bricks. If you have any masonry experience, the project is fairly straightforward. Just be sure to maintain a slope from the top of the flue out to the edge of the masonry, but avoid leaving the outside edge too thin. Cracks are likely to return in thin mortar.