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Old 06-16-2017, 11:16 AM   #1
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Basement upflush shower height required question

How much higher will my shower floor need to be from my entry point into my upflush Reservoir ?

I have an everbilt upflush toilet Reservoir that my drain pipe for my shower can be plugged into but it needs to be plugged in six and a half inches up from the bottom of the reservoir.

I have 90 inches from floor to ceiling to work with.

I'm trying to figure out how much higher I am going to need to make my shower floor above the six and a half inch entry point of my everbilt toilet Reservoir.

I plan to put the shower right next to the toilet to minimize the Run.

Considering maybe not using the everbilt toilet Reservoir that I have and buying a saniflo toilet system because that shower drain pipe enters the saniflo system only an inch and a half from the ground and the saniflo rep said that some customers install the shower drain without P trap when clearance is an issue. I know it will fail code without a P-trap but I am not real worried about code in my basement.

The thinking is that since the saniflo has a flap valve that opens and closes when the shower is in use and not in use that Vapors should not be much of a problem and it would be nice to have the tallest shower I can possibly have in the basement with the smallest Step Up.

I'm trying to determine if I should buy the saniflo or just use the everbilt that I have. Here is a picture of the everbilt.

Another thought is to excavate out four or five inches of my basement and put the everbilt down into that and backfill the perimeter with concrete. I have a radon mitigation system in my basement but I don't know if radon will be still sealed out if I go that route. I'm also worried about water intrusion when we have wet springs or fall. The everbilt does not have any flap valves so I will definitely be using a P trap with that one.

Thoughts on shower floor elevation required and or going with the saniflo without a p trap?
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Old 06-16-2017, 11:17 AM   #2
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Old 06-16-2017, 12:37 PM   #3
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Re: Basement upflush shower height required question

1/4 slope per foot of run should do you fine. So 3 feet away 3/4 inch higher at the shower.
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Old 06-16-2017, 04:39 PM   #4
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Re: Basement upflush shower height required question

How high is the external fixture tie in on your unit? That is where you start you also must vent the shower and the unit itself to outside air.

I would go with this

Last edited by Ghostmaker; 06-16-2017 at 04:43 PM.
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Old 06-16-2017, 05:18 PM   #5
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Re: Basement upflush shower height required question

Besides your required fall to the unit and the unit inlet height, most jurisdictions reuire a 2" shower drain (no tub).

Sorry, I don't have a 2" p trap to measure, but I suspect that trap will take up 6-7 inches depth , depending on the shower floor drain style. (Now that is not necessarily additive to how high your shower base has to be.... it is probably a minimum.... as the trap arm obviously is maybe only several inches below your shower base.)

You might check whether you can use 1.5 as a drain in your area.... and you may want to pick up the 1.5 and 2" P traps and actually measure them to determine the depth you'll have to raise your shower floor.

Good luck

EDIT: I don't have any experience with those units.... but I would hate to not put in a P trap, build a whole shower, and then find out I really needed it. (Gguess, I'd want some pretty good advice and experience to count on that saniflow flapper.)
Never stop learning (xcep fer speling en typeing)

Last edited by MTN REMODEL LLC; 06-16-2017 at 05:24 PM.
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