Why Do My Old Drains Keep Backing Up? Cast Iron Rust (Tuberculation) Explained
If drains in a pre-1980 Houston home keep backing up despite repeated snaking, rust mounds inside the cast iron pipes are likely the cause. Learn what tuberculation is, why it’s not fixable with a plunger, and when to descale vs. replace.
Why Old Cast Iron Pipes Back Up (And What It Means for Your Slab)
Old cast iron pipes develop a crusty buildup inside that slowly chokes water flow — and can eventually cause sewage backups. Here’s what’s happening and when to call for help.