|Posted by M.Lynch on February 08, 19101 at 14:21:34:|
When I flush the toilet, it glugs and so does the shower drain. I also see air bubbles come up from the toliet. Also when the washing machine drains,water backs up through the shower drain. The sink and toilet gurgles. The water drains back down the shower drain.
I have used foaming plunmber and liquid plumber.
Could it be the vent from the house. These utilities are on the first floor.