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Atlanta Kitchen Drain Leak Repair Project: Cast Iron to PVC

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What are the project details for this Atlanta drain and pipe replacement?

  • August, 2025
  • Drain & Pipe Replacement
  • Oakdale Rd
  • Atlanta, GA 30307
  • Single Family Home
  • Fix & Flow Plumbing

Findings & Leak Source Identification

Initial inspection confirmed moisture damage in the ceiling below the kitchen. The dishwasher and a rear access panel were removed, exposing a cast iron tee tied into the kitchen arm. Although no active leak was observed at the tee, water testing of the kitchen sink revealed saturated wood and leaking inside the wall cavity. A camera inspection confirmed rotted cast iron piping hidden within the wall, which was directing water into the lower-level ceiling and out of the home’s exterior.

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Repairs Performed

  • Ceiling Access: Opened the lower-level ceiling at the stained area to reach the compromised drain and vent stack.
  • Cast Iron Removal & Replacement: Removed the deteriorated cast iron tee behind the dishwasher and installed a new vent stack connection to eliminate the damaged section.
  • PVC Drain Installation: Installed new PVC drain piping from the lower level up through the subfloor to the kitchen sink. Inside the cabinetry, new PVC drain components were fitted, including a P-trap to the disposal and a Sure-Vent air admittance valve for proper venting.
  • Sealing & Cleanup: Old drain penetrations were sealed with styrofoam. A full drain function and leak test confirmed proper operation with no leaks. The dishwasher and access panel were reinstalled, and all work areas were cleaned.

The Result: The failing cast iron piping was replaced with a durable PVC system, restoring full drainage to the kitchen sink and eliminating water intrusion into the lower-level ceiling. The home now has a reliable, code-compliant drain system designed for long-term performance.

Failing cast iron drain replaced with durable PVC—restoring proper drainage and protecting your home from hidden leaks!

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Frequently Asked Questions

1 How do you identify the source of a hidden kitchen drain leak?

Fix & Flow Plumbing conducts an initial inspection for moisture damage, removes access panels, and performs water testing. A camera inspection is then used to confirm the exact location and cause, such as rotted cast iron piping hidden within walls.

2 What type of materials are used for kitchen drain pipe replacements?

For this project, deteriorated cast iron piping was removed and replaced with a new, durable PVC drain system. This included installing new PVC drain components, a P-trap to the disposal, and a Sure-Vent air admittance valve for proper venting.

3 What does the kitchen drain leak repair process involve?

The repair process typically involves opening the lower-level ceiling for access, removing the old cast iron, and installing new PVC drain piping and a vent stack. Old penetrations are sealed, and a full drain function and leak test is performed, followed by cleanup and reinstallation of removed items.

4 What are the long-term benefits of replacing old cast iron drains with PVC?

Replacing failing cast iron with a durable PVC system restores full drainage to the kitchen sink and eliminates water intrusion into the lower-level ceiling. The home gains a reliable, code-compliant drain system designed for long-term performance and protection against hidden leaks.