Have you ever wondered why the shower turns boiling hot when someone flushes the toilet? Or why your pipes rattle in the middle of winter? As established plumbers with many years of industry experience behind us, the team at JPG have seen it all and this week, we answer some of the most commonly asked questions about plumbing.


Why does the water temperature change in the shower when the toilet is flushed?

After you flush, a valve opens so that the toilet tank can refill and this diverts cold water from the shower. You’ll notice that a temperature change only occurs in some showers, this is because it depends on the type of plumbing you have and the amount of water the valve allows through.

Why does my plumbing rattle?

Pipes and drains rattle when water lines are not properly isolated. This issue is relatively easy to fix if you have easily accessible water lines.

My hot water system used to work really well, what happened?

Over time, sediment and lime deposits build up in your hot water system, creating a barrier between the water and the burner, affecting your system’s ability to produce water and dramatically increasing the amount of energy required to heat the water. This situation can be prevented by having the sediment periodically removed by a professional plumber.

How do I plunge a drain?

First, fill the drain up with water until it starts to back up. Next, place a small plunger over the drain and press up and down to try and force the water down the outlet (not out the side of the plunger). You’ll know you’ve been successful when the water drains away.

I don’t have any leaking pipes but my water bill is still high, what’s happening?

In residential plumbing systems, the most common site for leaks is not pipes but toilet tanks. Toilet tank leaks are caused by worn parts or improper alignment of the flushing mechanism and can easily go undetected.


Why is my toilet emptying itself of water?

This usually has to do with the vent malfunctioning in your sewerage system. Vents allow for even airflow through the system and if the vent is allowing in little or no air to escape, it can cause air pockets to form in the waste branches causing a phenomenon called back-siphonage where the air is forced through the sewer and pulls the water in the trap along with it.


JPG are your local plumbing experts here to offer advice and assistance on anything and everything water related. To learn more about our capabilities, please don’t hesitate to get in touch with our friendly team by calling 0400 978 442.