Mortar is the material that retains bricks together and seals the gaps between them. A cracked chimney could be repaired with fresh new mortar joints If your bricks remain in good affliction. This repair is typically low-cost at $150–$five hundred. Info on the website was helpful, we have been contacted https://chimneyrepair35689.blogrelation.com/34067619/how-much-you-need-to-expect-you-ll-pay-for-a-good-modern-fireplace