The most common cause of slow-draining or backed-up shower drains is soap residue. When you’re in the shower, you’re covered by lots of soapy suds. These suds rinse off your body and down the drain, but some of them don’t make it through the drain opening. Instead they accumulate in a thick layer on top of the drain opening, creating a blockage that traps water and stops it from flowing down the drain.
What causes soap residue?
Suds produced by the combination of warm water and soap are full of tiny bubbles that are much smaller than a drain opening. When you turn off the shower, the suds have time to settle and form a solid layer that acts like a filter, blocking the flow of water down the drain.
How can I prevent this problem?
You can avoid this problem by taking one simple step: putting a stopper in your drain.
A stopper is a simple and effective way to prevent soap residue from building up in your shower drain. It consists of a flat rubber disc that fits snugly over the drain opening, creating a tight seal against water flow. This seal prevents water from going through the drain opening, making it impossible for suds to build up and form a blockage in the first place.