Repeated main-drain backups after dry weather and rain deserve a closer look
Most clogs in a sink, tub or shower begin with what goes down the drain: hair, soap, grease and other buildup narrowing the pipe. That is usually an interior-drain issue, and clearing that line restores flow without turning a simple blockage into a larger project.
The picture changes when the main drain or buried sewer backs up repeatedly. In Clyde, dry stretches followed by substantial rain change the moisture in the soil around underground pipe. Movement at an older joint or fitting, or at a section that has settled, leaves a spot where paper and solids catch. Clearing the main line removes the immediate blockage, but a recurring backup calls for finding why material keeps collecting there.
Rain can also produce symptoms that look much like an ordinary sewer clog from inside the house. Water entering near a low cleanout, poor drainage at the surface, or damage in a buried line can all contribute to a backup. We separate those conditions from a straightforward obstruction before treating repeat backups as another routine drain cleaning.