I have a kitchen sink upstairs and downstairs. When the sink upstairs
drains, it backs up into the downstairs sink. Is there any cheap way to fix
Someone mentioned to me you can get a one way valve for the sink drain.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.