If your house was built in the 80s, this pipe could be your biggest surprise
If your house went up in the 1980s, the most expensive thing hiding behind the drywall may not be knob‑and‑tube wiring or asbestos tile, but a gray plastic pipe that looked like the future when builders first embraced it. Polybutylene, often shortened to “Poly B,” was sold as a miracle material, yet it has since…
