Unbeknownst to her, the concrete poured when the house was built contained a naturally occurring mineral called pyrrhotite. Over time, this mineral has cracked the foundation.
According to a 2019 State House report, thousands of homes across the state may have failing concrete foundations due to pyrrhotite, an iron sulfide present in concrete.
The report said pyrrhotite causes concrete to deteriorate...leading to irreversible foundation damage. This damage can take over a decade to 30 years to appear.
The only solution is complete foundation replacement with pyrrhotite-free concrete. Depending on the size of the home, cost estimates as of 2019 ranged from $150,000 to $250,000.
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