This SE Portland chimney had mortar joints that were cracked crumbling and loose from the roof line down to the ground. A tuckpointing repair was recommended. Tuckpointing, or Repointing is the process of renewing the pointing, which is the external part of mortar joints, in masonry construction. Over time, weathering and decay cause voids in the joints between masonry units, usually in bricks, allowing the undesirable entrance of water. Water entering through these voids can cause significant damage through frost weathering and from salt dissolution and deposition.
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