Overhead Shower Install

nuckphotoApril 23, 2014

We are doing a remodel of our bathroom. The bathroom will be completely gutted.

I want to run a water line from the valve to install an overhead rain style shower head. This is a shower only, no tub. It will have a wall shower head/handheld plus the over head one.

I was thinking of buying a shower/tub valve and routing the tub line overhead for the rain style shower head. I'm assuming this will work?

Should I use copper pipe or will plastic pipe (PEX?) work?

Any recommendations for a certain brand/type of valve? Are the constant temp valves any good?

Any advice will be appreciated.

Thank you.

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jakethewonderdog

The plan you have for using a tub / shower valve to run two shower heads won't work. Tub/shower valves assume there is no back pressure on the tub spout.

You can use any type of pipe that's acceptable by code for your area. Be sure to firmly attach the shower stub(s) to a support so they resist the weight of a showerhead and the installation forces. You don't want to open the wall again to fix that later. In addition, the pressure balanced scald guard valve may be required in your area and is probably a good idea with a rain style overhead showerhead ( think about a scalding situation..)

You will also need to look at the volume of water in GPM for the shower using both showerheads. Will you need to change the design of your supply lines, your drain lines or your water heater to accommodate the extra volume of water? Do the math first.

I happen to think multi-head showers, like big soaking tubs, are beyond wasteful -- particularly when many areas are subject to drought. The amount of heated water that's dumped down the drain is crazy bordering on criminal.

    Bookmark   April 23, 2014 at 10:40AM
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nuckphoto

Thanks for the reply. Guess I should have stated that the shower usage will be one or the other, not both.

    Bookmark   April 23, 2014 at 10:51AM
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aidan_m

Still won't work. The combination valve relies on gravity. When the tub is filling, both sides of the valve are open, but the lack of back pressure from the tub spout does not force the water out of the shower head. Gravity keeps the water flowing through the lower opening only. If you hold your hand over the tub spout the water will come through the shower head.

You need two separately plumbed control valves for two showers.

I've seen a job done like you are describing. Only one shower head worked, and it only worked with the diverter set to shower. With the diverter open (set to the tub filler), both shower heads just had a miserable trickle of water.

    Bookmark   April 23, 2014 at 2:12PM
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nuckphoto

Thanks for responding. So, would this work?

http://www.amazon.com/Grohe-19881000-GrohFlex-Cosmopolitan-Function/dp/B006K8HX3I/ref=sr_1_8?ie=UTF8&qid=1398277597&sr=8-8&keywords=rough+in+dual+shower+diverter

I'm assuming with something like the above I would still need a temp control valve feeding water into it.

Or, can someone point me in the right direction (product)? The dual showers are going to happen, I just have to figure it out.

    Bookmark   April 23, 2014 at 2:38PM
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nuckphoto

Thanks for responding. So, would this work?

http://www.amazon.com/Grohe-19881000-GrohFlex-Cosmopolitan-Function/dp/B006K8HX3I/ref=sr_1_8?ie=UTF8&qid=1398277597&sr=8-8&keywords=rough+in+dual+shower+diverter

I'm assuming with something like the above I would still need a temp control valve feeding water into it.

Or, can someone point me in the right direction (product)? The dual showers are going to happen, I just have to figure it out.

    Bookmark   April 24, 2014 at 12:30PM
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nuckphoto

Thanks for responding. So, would this work?

http://www.amazon.com/Grohe-19881000-GrohFlex-Cosmopolitan-Function/dp/B006K8HX3I/ref=sr_1_8?ie=UTF8&qid=1398277597&sr=8-8&keywords=rough+in+dual+shower+diverter

I'm assuming with something like the above I would still need a temp control valve feeding water into it.

Or, can someone point me in the right direction (product)? The dual showers are going to happen, I just have to figure it out.

    Bookmark   April 24, 2014 at 12:42PM
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jakethewonderdog

I'm not familiar with that valve - but it's the right idea. Get one that's made for dual showerheads.

Here's one that has a control for the two showers

Here is a link that might be useful: Dual control

    Bookmark   April 24, 2014 at 2:13PM
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