How To Tell If You Have Poly-B Plumbing (And Why It Matters)

How To Tell If You Have Poly-B Plumbing (And Why It Matters) If you’re a homeowner in the U.S. — especially if your house was built or renovated between the late 1970s and mid-1990s — you might be sitting on a ticking time bomb. Not a bomb of explosives, but one made of plastic: Poly-B…