Why is my basement flooding when I flush the toilet?

Why is my basement flooding when I flush the toilet?

If your basement floor drain backs up when the toilet is flushed, it’s caused by a blockage in your home’s sewer line. The most common source of these blockages is flushing items that aren’t meant to be flushed, but tree roots invading the sewer line can also cause blockages.

Why does my toilet overflow when I flush it?

Three Reasons Toilets Overflow An overflowing toilet is caused by one of three things: a clogged or blocked drain that doesn’t allow for a proper flush, an improperly adjusted float that allows the tank to overfill or a blocked vent pipe that replaces the air in the pipe after each flush.

What happens when I flush the upstairs toilet?

Your plumbing system is hooked together and leaves the house through one pipe. If you flush the upstairs toilet and the basement toilet overflows then you have a clog in your main. The water hits the clog and has no other place to go so comes up in the basement toilet.

Why does my Basement Toilet keep flushing water?

As soon as your basement toilet looses it’s gusto for flushing, then it’s likely to be because the drain pipe it’s emptying into is full of water. Stop pouring water into that basement toilet when you detect that the toilet has lost it’s enthusiasm to flush.

Where is the drain from the downstairs toilet?

Without knowing your house layout, you can follow the drain from the downstairs toilet to where it meets the pipe for the drain from the upstairs toilet. Once you identify the drains intersection, look for another drain from any sink anywhere in the home that is PAST the intersection of the two toilets pipes AND closer to the main sewer drain.

Why does the toilet flush down the vent stack?

So, when the upstairs toilet flushes a large volume of water down the vent stack it forces air up through the toilet since it cannot go up through the AAV. The only really good solution is to add a vent to the downstairs plumbing that goes all the way to the attic and joins the house vent stack there.

Your plumbing system is hooked together and leaves the house through one pipe. If you flush the upstairs toilet and the basement toilet overflows then you have a clog in your main. The water hits the clog and has no other place to go so comes up in the basement toilet.

As soon as your basement toilet looses it’s gusto for flushing, then it’s likely to be because the drain pipe it’s emptying into is full of water. Stop pouring water into that basement toilet when you detect that the toilet has lost it’s enthusiasm to flush.

Without knowing your house layout, you can follow the drain from the downstairs toilet to where it meets the pipe for the drain from the upstairs toilet. Once you identify the drains intersection, look for another drain from any sink anywhere in the home that is PAST the intersection of the two toilets pipes AND closer to the main sewer drain.

So, when the upstairs toilet flushes a large volume of water down the vent stack it forces air up through the toilet since it cannot go up through the AAV. The only really good solution is to add a vent to the downstairs plumbing that goes all the way to the attic and joins the house vent stack there.