put in a new bathroon in the basement using an upflush systen. not a cheap system either.
well the question is. getting kickback thru one of the vents downstairs.
have 2 venting points one goes outside and one in the basement.
it doesnt seem to work correctly ,what can i do to eliminate this.
someone said to vent under the sink higher than the drain. is there any other options.
well the question is. getting kickback thru one of the vents downstairs.
have 2 venting points one goes outside and one in the basement.
it doesnt seem to work correctly ,what can i do to eliminate this.
someone said to vent under the sink higher than the drain. is there any other options.
