There are a few potential causes for plumbing pipes knocking when the toilet is flushed.

Some possible explanations include:

1/ Water Hammer:

When water is suddenly stopped or changes direction, it can cause a shock wave that travels through the pipes. This can cause plumbing pipes to knock or bang. This is often caused by a faulty water valve or a problem with the toilet’s fill valve.

2/ Loose Pipes:

If the pipes are not secured properly, they may vibrate or knock when the toilet is flushed. This can be caused by pipes that are not properly secured to the wall or floor. It can also be caused by pipes that have become loose due to age or corrosion.

3/ High Water Pressure:

If the water pressure in your home is too high, it can cause the pipes to vibrate or knock when the toilet is flushed.

4/ Faulty emergency shut-off valve:

A lot of shut-off valves that serve plumbing fixtures have rubber washers that create the seal when shut off. If the rubber washer becomes loose, it can start to vibrate when the water is being used at that fixture or a fixture that is close by. This will also potentially cause water hammer and will need to be repaired or replaced.

5/ Solution:

To fix the problem, you may need to hire a Saskatoon plumber to assess the issue and make the necessary repairs. In the meantime, I guess you can try flushing the toilet more slowly to see if that helps reduce the knocking ;).


Contact Us:

If you are experiencing these types of issues in your plumbing concern, you can always count on the professionals at Perfection Plumbing & Drain Cleaning Ltd. to solve the issue and get your plumbing system acting normally once again. Call 306-652-9556 to book your appointment.