What should be done if a rat gnaws a pipe? - briefly
Turn off the water supply, then replace or repair the damaged section with a rodent‑proof material such as steel or reinforced PVC; seal all entry points to prevent future gnawing. Finally, implement a pest‑control program to eliminate the infestation.
What should be done if a rat gnaws a pipe? - in detail
When a rodent chews a water or sewer line, immediate action is required to prevent water loss, contamination, and structural damage.
First, isolate the affected segment. Turn off the main water supply or, for sewer pipes, shut the relevant valve to stop flow. Verify that the system is completely depressurized before proceeding.
Next, assess the damage. Visually inspect the pipe for bite marks, cracks, or missing sections. Use a flashlight and, if necessary, a small inspection camera to locate the exact point of compromise, especially in concealed areas such as walls or under floors.
After confirming the defect, remove the damaged portion. Cut out the affected section with a pipe cutter or saw, ensuring clean, square edges. For metal pipes, deburr the cut ends; for PVC or ABS, trim to the proper length with a pipe saw.
Install a replacement segment. Select a material resistant to rodent gnawing—steel, copper, or reinforced PVC—based on the existing system. Apply appropriate fittings (compression, threaded, or solvent-weld) and use sealing tape or primer as required. Tighten connections to manufacturer specifications to avoid leaks.
Restore service. Reopen the valve, gradually re‑pressurize the line, and check for leaks at each joint. If any seepage appears, tighten or reseal the connection immediately.
Finally, implement preventive measures. Seal entry points by caulking gaps, installing steel mesh around vulnerable pipe sections, and eliminating food sources that attract rodents. Consider setting traps or consulting a pest‑control professional to reduce the likelihood of future chewing incidents.