Why Are These Foundations Crumbling?

Ask This Old House mason Mark McCullough investigates a strange issue happening to foundations in the Northeast Click here to SUBSCRIBE to the official This Old House YouTube channel: http://www.youtube.com/subscription_center?add_user=thisoldhouse Resources: Mark discovered that thousands of homes built between 1980-2017 in Western Massachusetts and Northern Connecticut have concrete foundations with pyrrhotite in the aggregate. These foundations will, after a period of 20 years or so, begin to crumble until they are no longer structurally sound. For more information, check the Connecticut Coalition Against Crumbling Basements (http://www.ccacb.org/). Additional assistance with this segment was provided by Michelle Loglisci, Russ Dupere, and Mark Violette. Ask This Old House TV Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.   This Old House releases new segments every Sunday, Monday, Wednesday and Friday.   Keywords: This Old House, How-to, home improvement, DIY, ask this old house, mark mccullough, kevin o'connor, tom silva, richard trethewey, foundations, pyrrhotite, concrete Watch the full episode: https://ift.tt/2q7OOF8 Follow This Old House and Ask This Old House: Facebook: https://ift.tt/1psm4fC Twitter: https://twitter.com/thisoldhouse https://twitter.com/asktoh Pinterest: https://ift.tt/1psm4fE G+: https://ift.tt/1CtsNjJ Instagram: https://ift.tt/1psm1QZ Tumblr: https://ift.tt/1CtsLbH