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 Dripping Shower Help
Author: joeco316 (PA)

Hello,

I'm a first-time homeowner. Purchased 2 story, 2.5 bath twin in September. Both showers are on the upstairs. The master bathroom has a shower stall with a single knob that controls the water flow and temperature.

The master shower drips intermittently throughout the day. There doesn't seem to be a concrete pattern to what causes it. Using the other shower on the second floor seems to set the dripping off sometimes, but it happens numerous times throughout the day regardless of whether the other shower is used. Sometimes its a pretty steady rain-shower-like drip, sometimes its much slower, and sometimes its not happening at all. The floor of the shower stall is constantly wet because of this, leading to very annoying mold growth on the tiles, shower curtain, and caulking where the wall tiles meet the floor tiles.

When the dripping is occurring, if the sink in the same bathroom is turned on for a few seconds, the dripping stops (temporarily) soon after. I haven't tested whether this same effect would occur with other fixtures throughout the house. Sometimes when I do this, the water flow from the sink is a bit stronger than normal for about 1 second when first turned on. I have replaced the showerhead with another and notice no difference in the dripping.

I should also mention that after using the shower, a clicking or tapping sound can often be heard coming from the shower head or pipe coming out of the wall. I'm not sure if that's just a normal sound from expansion/contracting or if it could be a symptom of the problem as well

I'm very much a novice when it comes to plumbing, but my dad who knows a good bit more than me suggested that it is likely a problem with the mixer and that the knob and plate covering should be removed to assess it. Could it be something as simple as a rubber washer gone bad? He also doesn't seem to believe me about the sink being turned on affecting the dripping. I can't guarantee that it isn't a coincidence, but I'm somewhat sure about it.

Thank you in advance for any help, pointers, information you can provide!



Edited 2 times.

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 Re: Dripping Shower Help
Author: Hvac2000 (IL)

You need a new single handle cartdrige. It is most likely a moen shower faucet. If you are handy you can do yourself. As for the water pipe noise in the wall. The pipe is probably not secure and there might not be a hammer arrestor connected to that shower pipes. It is ok just a annoying problem.

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 Re: Dripping Shower Help
Author: stuckinlodi (MO)

When shower valves or cartridges get worn they can begin to leak, they have constant water pressure applied to them. When you turn on a nearby sink faucet you are reducing the water pressure in that pipe a little, that can slow or stop the leak since the water is not pressing as hard on the worn valve and it can't leak thru as easily.

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 Re: Dripping Shower Help :clap:
Author: joeco316 (PA)

Thanks for the answers! Very much appreciated.

I determined that its a Delta Monitor 1400 so I ordered an RP19804 cartridge. Based on the videos I've watched, I think I should be able to replace it myself (I hope). Are there any pointers or things that are known to go wrong or that I should watch out for when doing it?

Thanks again!



Edited 1 times.

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 Re: Dripping Shower Help :clap:
Author: North Carolina Plumber (NC)

If you use pliers to remove the retaining ring, don't grip it tight, it's thin and pliers can compress the ring and make it difficult to remove. I can usually remove them by hand.

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 Re: Dripping Shower Help :clap:
Author: joeco316 (PA)

Thanks! The retaining ring is the brass piece that is exposed when the metal sleeve in which the knob sits is pulled off, right?

Post Reply

 Re: Dripping Shower Help :clap:
Author: North Carolina Plumber (NC)

Yes indeed.

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