Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.

Banging riser

What would cause a riser to bang horribly in only one apartment in a 21 floor building?


  • Jamie Hall
    Jamie Hall Member Posts: 23,313
    Indeed. A sag -- or badly pitched -- horizontal section somewhere along that particular riser. It could be in the basement -- but it also could be between floors somewhere. More likely the latter, if it is just one apartment.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
  • ChicagoCooperator
    ChicagoCooperator Member Posts: 354
    If it's one pipe steam, somebody could have tried to modulate their heat with the valve too!