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Old 02-24-2012, 08:23 AM   #1
P.LeMay
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New Construction and other fun

Well I've been poking around on the forum here the past couple weeks and finally decided to sign-up and post up. Currently I'm towards the end of a month long project of getting all the tile floors, showers, tubs, and fireplace installed in our new home. All the tile flooring is finished, I ran out of rock for the fire place, so now I'm left with our walk in shower and a couple questions.

The shower is currently durocked, the curb and pan have been poured and the seams taped and mortared. My first question is do I tape and mortar the edge between the pan and walls or do use something else that will flex(caulk or something I don't know about).

Next is what to do with the drain? I didn't pour the pan, so there's a gap around where the drain will screw into the base. What should be used to fill this area in after I get the drain installed to the proper height? Also I will be putting on a latex membrane on after I figure these couple questions out. I will be using Mapei Mapelastic AquaDefense. Anyone ever used the stuff? I assume its comparable to something from Laticrete.
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Old 02-24-2012, 09:18 AM   #2
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Welcome, Paul.

Think we'd need more information on just how your shower pan was constructed to give you much help. I can't imagine making a traditional mud/liner/mud pan (if that's what you've got) without having the top drain section in place before the final mud floor was placed.

Some photos might help a lot, too, 'specially if you have some "during" pictures.

Use the paper-clip icon above the Reply dialog box to attach photos stored on your computer.

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Old 02-24-2012, 12:59 PM   #3
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Hope this helps.....
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Old 02-24-2012, 01:00 PM   #4
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Paul,

Glad too see s pic. Can you take a few more?

One of the curb closer up

One of a shower wall, say the bottom 2 feet.

Was there a sloped bed of ceement under the liner?
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Old 02-24-2012, 01:44 PM   #5
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I have no clue on the construction of the pan. It was poured while I was out of town otherwise I would have done it. From what I can tell the pan does look sloped, it had a rubber membrane under that comes over the curb. I'll be out at the house again tonight, I can snap a couple more pics. Any other pics you guys want?
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Old 02-24-2012, 02:27 PM   #6
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By any chance can you go underneath and take a pic looking at the bottom of the shower? Particularly at the drain?
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Old 02-24-2012, 06:09 PM   #7
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Hi Paul, welcome! Where ya located in Minnie?
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Old 02-24-2012, 06:22 PM   #8
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Took a couple more...
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Old 02-24-2012, 06:50 PM   #9
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Quote:
Originally Posted by Paul
I have no clue on the construction of the pan.
Nor, I suggest, did the person who constructed the pan. Just when we think we've seen it all..........

It would appear that the part of your clamping drain that should be installed just above your subflooring such that the pre-slope and waterproofing liner can terminate flush with the top of it, has been installed below the subfloor such that...........well, I just dunno what.

If there is a waterproofing liner, I suppose it's installed flat on the subfloor (large mistake in itself) and clamped to the plywood with bolts going through the subfloor into the lower drain section. I wouldn't have thought the bolts would be near long enough, but that appears to be what you have there.

It's actually so bizarre that I'm gonna stop here and see don't somebody offer me a dope slap and correct me on what the photos really show.

Please.

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Old 02-24-2012, 08:02 PM   #10
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Hey Mike. House is located 30 min west of Duluth.

Ok folks, this doesn't sound like its good. What would we looking at to right this?
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Old 02-25-2012, 08:10 AM   #11
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I am glad I asked for the additional photos. The one from below made me chuckle out loud and want to Thanks for the morning smile. That sharp edge on the mud is probably the plywood, which means the mud is paper thin at that point.

You need to;

1- fire the person who did this
2- read the shower construction thread in our library then
3- choose a waterproofing method
4- decide whether you want to do this yourself or hire it out
5- let us know the answers 2, 3, & 4.
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Old 02-25-2012, 09:21 AM   #12
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Ok, so what I've gathered is the drain is installed bass-ackwards. This will, I assume, have an effect on my subfloor should water get under the pan. The question is...do we pull everything and start over or soldier on?

And to answer your questions Cabot:

1) He only did the pan, never gonna see him again
2) Done
3) Mapei Mapelastic AquaDefense Waterproofing Membrane
4) I will be doing this myself and hopefully soon.
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Old 02-25-2012, 10:22 AM   #13
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No soldiering on, Paul, you gotta start over.

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Old 02-26-2012, 09:19 AM   #14
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Take the ceement out and cut the riser pipe at the red mark. If this were my job I'd be taking the CBU down and flattening the studs to make life much easier.

EDIT : and since we don't see a vent pipe for the shower drain - make sure you have one that meets or exceeds code.
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Old 02-27-2012, 08:00 AM   #15
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Ok, so I'm hoping to fix this sometime this week after I finish the bath.

Back to one of my original questions. What to do between the CBU and pan?
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