"I came up to the cabin for the weekend, ran the shower for 5 minutes, and suddenly water was backing up over my ankles. The drain was completely frozen solid. because that water sits in the pipe and re-freezes into a thicker plug.
"My 5th wheel’s shower drain froze at 10°F. Since I couldn't run a heat cable inside the plastic underbelly, I poured a gallon of directly down the drain. Let it sit for 30 minutes. It slowly ate through the ice plug. Not a perfect fix (it left pink goo), but the water drained again. Deducted one star because you have to flush it 10 times before the smell goes away." ⭐ 2 Stars – "Plumber Emergency Service – Overcharged" By: DesperateInDetroit Date: Jan 2026 shower drain frozen
By: ColdInTheNorth Date: Jan 2026
Buy a 12-ft heat trace cable before winter hits. Threading it down the shower drain for 10 minutes is cheaper and faster than any other fix. "I came up to the cabin for the
Pro tip: Do NOT use a propane torch or hair dryer directly on PVC—you’ll melt the pipe. This cable is the only safe solution for a frozen interior shower trap." By: NomadMike Date: Feb 2025 "My 5th wheel’s shower drain froze at 10°F