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Stay warm, and may your drains flow freely.
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.
There is nothing quite as jarring as stepping into a lukewarm shower on a freezing January morning, only to look down and realize the water is rising around your ankles.
Unlike your kitchen sink, which usually drops straight down into a heated crawlspace or cabinet, a bathtub drain runs horizontally for a few feet before connecting to the vertical stack. Often, this horizontal run is located just a few inches below the floor—or worse, inside an uninsulated exterior wall or a poorly sealed subfloor.
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.
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. bathtub drain freezing
There is nothing quite as jarring as stepping into a lukewarm shower on a freezing January morning, only to look down and realize the water is rising around your ankles. Stay warm, and may your drains flow freely
Unlike your kitchen sink, which usually drops straight down into a heated crawlspace or cabinet, a bathtub drain runs horizontally for a few feet before connecting to the vertical stack. Often, this horizontal run is located just a few inches below the floor—or worse, inside an uninsulated exterior wall or a poorly sealed subfloor. When freezing starts, that sludge creates a rough
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.
