“Hi, my name is Greg Batista here to answer another question from the internet.
Spartacus4949 asks: What’s the problem with old cast iron pipes in condos?
Cast iron was the go-to material in Florida buildings before the 1970s. But in our hot, salty, humid climate, cast iron corrodes much faster than in other regions. Inside, pipes rust, forming scale that narrows the opening. That causes backups, leaks, and eventually complete collapse. The National Association of Home Builders found the typical life expectancy of cast iron is 50–75 years in normal conditions, but here in South Florida, many pipes fail in just 25–30 years. A 2016 Florida survey estimated 2.4 million homes built before 1975 are at risk of cast iron pipe failure. Beyond flooding and mold, insurance companies often deny claims if damage is due to “wear and tear,” leaving condo associations with multi-million-dollar replacement bills. That’s why many older condos are replacing entire plumbing stacks with PVC or HDPE before disaster strikes.
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Authoritative references: National Association of Home Builders – Life Expectancy of Home Components; Consumer Reports investigations into cast iron failures; Florida Class Action Settlement (2016).
The author, Greg Batista, PE, CGC, SI is owner of G. Batista Engineering & Construction and is a nationally-recognized engineer and contractor with more than 35 years of experience and offices in Fort Lauderdale, Florida.
