Step 7 · Test for Leaks

The final step is to verify your work. Run a significant amount of water through the newly connected drain line. A bucket of water or flushing an upstream toilet multiple times works well. While the water is flowing, carefully inspect the connection point where the PVC enters the cast iron hub. Look and feel for any signs of moisture or dripping. If any leak is detected, the pipe may need to be removed and reseated.

Tools and Materials

WaterHDX Select-A-Size Paper Towels (24-Roll) 22015