Tuckpointing is the process of repairing mortar brick joints, and it's an important project to avoid expensive replacement work down the road. A mason will charge $779 to repoint loose chimney mortar on a good sized chimney, about 300 square feet, but you can do the job for $175, which covers the cost of the materials and renting the scaffolding needed. The project involves repointing or replacing mortar in the horizontal and vertical joints with a mortar mix. First the joint is cleaned out and all the loose mortar and dirt are removed, and then the joint is moistened and new mortar is applied in the joint to provide a permanent seal.
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