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Old 02-15-2015, 10:16 PM   #1
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Instaling shower base and drain


I have a preformed shower base that I want to install in my in finished basement that I'm completing. I picked up a drain (see below link). The shower base has 1" of foam that is below the plastic of the base but the drain is larger (3/4" or 1", I don't recall exactly). Attached are some photos of the drain in the base and the rough in of the shower location.

Do I need to break the 3/4" or 1" of the concrete to fit this drain? Are there other drains which would be easier to use? The base I can't return so would like to keep it if feasible.



Oatey Fits Pipe Size 2-in Dia PVC Shower Drain
http://www.lowes.com/pd_253153-138-4...52_4294937087_
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Old 02-15-2015, 10:21 PM   #2
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Yes you will need to break some of the concrete from around the stub up. If I was you I'd spend the extra $10 and get the brass Oatey drain.
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Old 02-15-2015, 10:32 PM   #3
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Also if you need to cut the pipe to below grade, buy one of these for $11 at one of the box stores.
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Old 02-15-2015, 10:34 PM   #4
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It's also a good idea to set your base in a mortar bed as well- place a ring of mortar around the base-on the floor of course. Be sure it's tall enough so the pan embeds into it good.

If you can't get the pipe the right hieght before setting the base, buy one of these so you can cut it afterwards. Stuff a rag down the drain before cutting though. I've had those bits fall out of the drill and into the trap. Then you need a magnet

http://www.homedepot.com/p/HDX-Inter...7516/204277491
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Old 02-15-2015, 10:38 PM   #5
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Quote:
Originally Posted by TheEplumber View Post
It's also a good idea to set your base in a mortar bed as well- place a ring of mortar around the base-on the floor of course. Be sure it's tall enough so the pan embeds into it good.
When I did my basement shower the base manufacturer suggested foundation material like this:
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Old 02-16-2015, 01:34 PM   #6
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Thank you all. As far as breaking the concrete, would you suggest it would be easier for my small concrete are that needs broke to use a smaller chisel like the link?



Bostitch 3/4-in Concrete Chisel
http://www.lowes.com/pd_299928-355-1...52_4294937087_
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Old 02-16-2015, 01:42 PM   #7
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It would of been nice if the plumber formed around the stub up shower drain like I did. I actually used an empty plastic sugar container.

You may want to use a concrete drill bit and a drill with hammer capabiliy to make some pilot holes around the pipe then use a chisel or rotary hammer to break it up.

Last edited by hammerlane; 02-16-2015 at 01:47 PM.
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Old 02-22-2015, 09:20 PM   #8
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Ok my own ignorance in assuming this, but I had assumed since they had stubbed and concreted around that the plumbers would have added a trap.

After laboring to chisel, hammer drill, angle grind with diamond blade to make room for the drain, i finally cut open the PVC pipe. To my surprise no trap.

Is that normal for newer construction (10 yr old house) to not put a trap in and concrete over the stub? I've framed around the shower already and planned the drain location to be at the stub.... Can I add the trap so it still has the drain in the same location?
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Old 02-22-2015, 10:19 PM   #9
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If that was for a shower then there should of been a trap there. Unless it was a Friday afternoon when the plumbers were roughing that in.

Can you add a trap. Hard to say. Wish there was a way of knowing how thats plumbed. Maybe that was meant for a vent or for the lav sink. Where is your toilet going?

Maybe the builder intended for it to be a 1/2 bath.
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Old 02-23-2015, 07:42 PM   #10
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I'm certain this was planned for a shower. I have a 3" stub a couple of feet away and a couple of other feet further is the vent and vanity tie in.

Hard to get it all in one photo but the vanity and vent is in between and behind the pex stub outs.

Is there a chance I have a trap further than right below the shower stub? I tried pushing a cheap snake down and didn't notice any major bends but i could have missed it.

Any other thoughts or do I need to start jack hammering?
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Old 02-23-2015, 08:03 PM   #11
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The bottom of the trap could be 12 inches below grade.

Last edited by hammerlane; 02-23-2015 at 08:06 PM.
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Old 02-23-2015, 08:08 PM   #12
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Pour water in the stub up. Can you look down It and see water pooling.
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Old 02-23-2015, 08:10 PM   #13
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No water pooling there so I'm sure there isn't a trap right below the stub. But could there be one several feet away? Or are the code requirements normally directly below the shower?
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Old 02-23-2015, 08:11 PM   #14
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Quote:
Originally Posted by hammerlane
The bottom of the trap could be 12 inches below grade.
the one bend in the PVC that I can see is exactly 12" below the concrete floor. Tried to take a photo, but didn't come out so well.
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Old 02-23-2015, 08:32 PM   #15
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The trap should be connected to the stub up. Would make no sense to have the trap further downstream. You have something not kosher going on there. Do you know anyone with a boroscope so that you can look beyond that bend?

Last edited by hammerlane; 02-23-2015 at 08:37 PM.
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