Repair Cracks and Failed Mortar Before Waterproofing
Waterproofing does not rebuild damaged masonry. It also does not fill large cracks, replace missing mortar, or secure loose bricks. Complete the necessary repairs first when the chimney has:
• Spalling or broken brick
• Deep masonry cracks
• Missing mortar joints
• Loose chimney sections
• A failed chimney crown
• Damaged chimney flashing
• A missing chimney cap
• A rusted chimney chase cover
Once the masonry is sound, the waterproofing treatment reduces future water absorption through its surface.
Older chimneys across Oak Cliff, Kessler Park, and East Dallas often need mortar repair before treatment. Newer chimneys in North Dallas and Lake Highlands still need inspection for cracks and roofline problems.