Bathtub Drain Freezing Updated -

If you leave the house and the water continues to drip, that backed-up water can freeze in the tub itself. Ice expands. Expanding ice can crack porcelain or fiberglass. Suddenly, you aren't just dealing with a frozen drain; you are dealing with a cracked tub and a leak into the ceiling below. Do not pour boiling water directly into the tub. If the trap is frozen solid, the boiling water will sit on top of the ice, potentially cracking the porcelain due to thermal shock.

Stay warm, and may your drains flow freely. bathtub drain freezing

The thin layer of organic sludge that lines your drain acts like a sponge. It holds moisture against the pipe wall. When freezing starts, that sludge creates a rough surface for ice crystals to latch onto. Within a few hours of your morning shower, a partial blockage can turn into a full ice dam. A frozen tub drain isn't just an inconvenience—it can be a disaster. When you run water to try to melt the ice, the water has nowhere to go. It backs up into the tub. If you leave the house and the water