Most homes built after the 1970s use plastic pipes for drains—specifically PVC (polyvinyl chloride) or ABS (acrylonitrile butadiene styrene). These materials are lightweight, cheap, and resistant to corrosion. They are not resistant to thermal shock.
If you need to drain a pot of boiling water, follow these steps to protect your plumbing: boiling water down drain
When you pour boiling water over a grease clog: Most homes built after the 1970s use plastic
Voice + visual instructions:
A classic, non-corrosive chemical reaction for minor build-up. Enzymatic cleaners: boiling water down drain
UNSAFE. Sudden exposure to boiling water can cause thermal shock , leading to immediate hairline fractures or total cracks in porcelain fixtures. 🚫 Why Boiling Water Often Fails for Clogs