Water backing up in basement floor drain...Help!
After refinishing my basement, the floor drain beneath my new laminate floor is ruined. Everytime someone takes a shower, the water backs up through the floor drain in the basement. The septic has ben pumped, and I had a plumber snake out the lines fromn the bathrooms, to the main line. The tubs drained good then, but water still backed up in the basement. I took the grate off the floor drain, and plugged the drain pipe. Now the tubs are running slow again. But the water in the basement is plugged from coming in. I climbedthe roof and sighted down the vent pipe with a flashlight. There are no blockages, but i can see water at the very bottom, maybe that's normal. Any advice?