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Unread 07-07-2015, 07:10 AM   #1
UCRed
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Water test with exposed mud?

Hello,

This is my first post here and I apologize for the length. I have tried to search but can not find what I am looking for.

Basically I have a shower pan that is 8 years old and starting to leak. I put an inch of water in the shower and it took about 36 hours to see slight water under the floor, not enough to drip. I isolated the drain by silconing a plastic container around the drain. And filled the pan again. This time no water in a week.

If you look at the picture underneath the area around the drain is not leaking. It comes out to the right where the TGI meets the sheeting.

So I tore out the area around the drain. Upon tear out I found the threaded part of the drain was just setting myself onto the flange due to the mud bed being 1 1/2" thick at the drain. As you can see from the picture everything is solid and in tacked.

So my question are: if I reinstall the top part of the drain flange and silicone it, can I water test this with the mud exposed or will it cause problems with the mud being directly exposed to the water.

Should I just flood the exposed area or the entire floor?

Can I invert the flange so that I can tread the drain into it, due to the bed thickness previously mentioned?

Thank you in advance for the input
Will
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Unread 07-07-2015, 07:12 AM   #2
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Unread 07-07-2015, 07:14 AM   #3
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Additional picture-- sorry new to posting pictures. I appreciate your patience
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Unread 07-07-2015, 08:09 AM   #4
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Welcome, Will.

A flood test can be accomplished with the final mud bed in place, but it requires patience enough to accept that it will take some time for the mud to become fully saturated and allow the water level to testify as to the absence of any leaking.

If you are confident you already know where it will leak again if you've not corrected the previous issue, that could speed the process, but you'll still want to give it a minimum of 24 hours to be sure. If it took 36 hours last time, 72 hours might be a good test this time.

You'll wanna fill the entire receptor area to the top of your curb.

The top flange can be inverted as you show in your photo to accommodate the mud bed thickness. The minimum thickness required by tile industry standards is 1 1/2 inches. Be sure to protect your weep holes before you re-mud around the drain after you determine where your leak occurred and repair that area.

My opinion; worth price charged.
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Unread 07-13-2015, 06:22 PM   #5
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Cx, thank you for the response.sorry for the delay, I was away on vacation.

I have a couple additional questions.

1. If I flood test and everything is good. How long do I need to wait to fill in the mud and re-tile?
2. Does the mud need to be completely dry?

Thanks
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Unread 07-13-2015, 06:38 PM   #6
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Wait 'till there is no more visible water, but damp mud is better than dry mud for your patching.

My opinion; worth price charged.
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