Repairing a Cracked PVC Sewer Pipe with Epoxy Putty

Sealing a Cracked 2" PVC Pipe at a Wye Connection

A homeowner discovered a crack at the seam where a 2" PVC pipe connects to a 4" wye fitting, causing leaks and sewer gas odors. Since the pipe is in a crawl space and difficult to replace, a permanent sealant is needed.

Recommended Repair: Epoxy Putty

Epoxy putty is an effective, durable solution for sealing cracks in PVC drain lines. Follow these steps:

1. Clean and dry the cracked area thoroughly.
2. Knead the epoxy putty until uniform in color.
3. Press it firmly into and around the crack, ensuring good adhesion.
4. Allow it to cure per the manufacturer's instructions (usually 30–60 minutes).

Alternative Options

• Epoxy tape – Wraps around the pipe for a tight seal; good for hairline cracks.
• Muffler repair kits – Designed for high-heat, high-pressure seals; also work on PVC.

Note: This repair is for non-pressure drain lines only. For pressurized supply lines, a proper coupling or replacement is required.