Drain — Frozen Tub

Call a professional if:

A usually occurs when standing water in the P-trap or main waste line is exposed to subfreezing temperatures, entirely blocking wastewater from exiting. Unlike pressurized supply lines, drain lines rarely burst immediately because they contain air gaps, but sustained ice expansion inside a trapped pipe can crack joints, damage PVC, and cause catastrophic structural leaks. Restoring flow requires a careful balance of chemical thermal lowering, direct external heat application, or physical brine injection. 🛑 Critical Step 1: Remove Standing Water First frozen tub drain