Case Study: 2 Chimney Repairs
Before and After
Stages of Chimney reconstruction
Rebuild the chimney with new bricks,
Replace the broken pre-cast chimney cap pieces with a cement cap,
Add a flue rain-cover,
Caulk the flashing,
Use high-temperature caulking.for the furnace vent.
The Underlying Problems:
The cement was much stronger than the brick - which leads to brick breakage.
The pre-cast chimney cap's seams failed.
Down to solid structure
The chimney bricks are removed, down to below the flashing, then down to a secure base.
Clean, safe site.
A tarp keeps small debris from being buried in the lawn.
Drop-cloths on the roof around the chimney keep it perfectly clean.
Rebuilding the chimney using new brick, the right masonry cement, and a level.
Based on the heat, humidity, and wind of the day, we might pre-soak bricks to keep them from drawing water from the cement. Cement strength improves with lower water-cement ratios, but we don't want the brick to absorb the water from the cement.
A custom form for the new cap, extending over the sides by the 2 inches required by code.
The black rain and critter cover is installed on the fireplace flue. It should be large and open enough to allow the flue to vent properly.