How do I know a hard deposit is present?
Only an inspection can identify the material. A slow drain by itself does not show a hard deposit.
Johnston, Iowa
A hard deposit is a question about the pipe wall, so in Johnston the first step is to have the material identified. A slow drain does not mean a hard deposit is present. A qualified professional should identify the material and check the pipe before choosing a cleaning method.
The EPA sewer cleaning guidance says jetting must be used with caution around fixtures that jets can damage, and that a hose fed into a service connection by mistake can cause a basement backup. Ask how the crew will keep that from happening.
Ask the professional to identify what is on the pipe wall before choosing pressure or a nozzle. A line in an older Johnston area and a line in a recent plat such as Glenstone Ridge may be different materials, and the method should fit the one you have.
Only an inspection can identify the material. A slow drain by itself does not show a hard deposit.
It can if the pipe is weak or damaged. Ask how the crew checks the pipe before choosing pressure and nozzle.
Not necessarily. Ask what the inspection shows and whether cleaning or a repair assessment fits.
This site does not claim one. An inspection of the line at your address answers the question.
Tell us about the affected drain, what you have noticed, and whether hydro jetting may suit the line.