Two companies at the center of a state investigation into crumbling foundations have renewed an agreement with the state to stop selling materials or products for residential foundations from a quarry in Willington.
In the agreement, the two companies, now defunct J.J. Mottes Company, in Stafford Springs, and Becker Construction, in Willington, acknowledged that pyrrhotite, an iron sulfide mineral, may be a contributing factor to the crumbling foundation problem in Hartford, Tolland and Windham counties.
Construction experts say there is no fix for the foundation problem and that all the concrete must be replaced, at a cost of $150,000, or higher, for most homes.
NBC Connecticut Investigates broke the story on crumbling concrete in foundations four years ago.
To date 800 homeowners have filed complaints with the state about crumbling concrete basements.
Construction experts estimate that thousands of homes across eastern Connecticut might be impacted by the faulty concrete.
J.J. Mottes and Becker Construction have said the problems with these foundations are the result of faulty installation.
Unlike prior agreements with the state signed since 2016, this one lasts two years. The prior agreements had just lasted one year.