No Trap seal under newly installed basement shower
I have a fairly new (3yrs) shower that was put in by an inexperienced "contractor" who apparently did not install a " trap seal" as part of the drainage system, so that we can hear and smell all sewage from the home flowing under this shower(we need to keep the drain covered).
What would be involved in fixing this problem?
I read another question on this website where the "p trap" right under the shower drain could be substituted by another type of trap outside the home. Is this possible in my case if the shower is in the basement?
Thanks!