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Old 02-07-2018, 12:21 PM   #1
mtwtmk
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Tiled shower floor leak advice please

I have a tiled shower that is leaking. The ceiling in room below wet. I noticed that where the floor and walls join, the grout is cracked or missing. Will caulking this with silicone help? I did cover the drain with heavy tape and filled about an inch of water, and it leaked quickly.
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Old 02-07-2018, 12:30 PM   #2
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there should be caulk there and it would certainly slow the water down but the fact that it's leaking to the room below means you have bigger problems.
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Old 02-07-2018, 12:38 PM   #3
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A shower should be waterproof before any tile, grout, or caulk is ever installed. Caulking that transition won't fix the issue.

How old is the shower?

Do you know how the shower was constructed and waterproofed?
If the drywall below is already damaged I would go ahead and cut a hole so you can see from below. That may shed a little light on the situation.

Unfortunately from the description it sounds like a fairly serious issue that cant be fixed with a bandaid.
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Old 02-07-2018, 12:40 PM   #4
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I do not know how it was constructed.
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Old 02-07-2018, 12:44 PM   #5
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The shower is 7 years old. There was some caulk that was dried out and cracked. I removed it to apply new caulk.
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Old 02-07-2018, 12:48 PM   #6
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Can you show us a pic of the drain?

Any time you do a flood test its best to use water from a source other than the shower head. That eliminates the possibility of the leak coming from the mixer valve and other plumbing connections.
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Old 02-07-2018, 12:52 PM   #7
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Thanks for the quick replies! I did fill shower with water from another source.
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Old 02-07-2018, 01:54 PM   #8
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There are a few options that I can see from here.
1. Cut out the drywall below and see what it looks like from below.
2. Call a tile guy, not a handyman, and have them take a look.
3. Start the demo because if your shower leaks when filled from another source, with the drain covered then the outlook is pretty bleak.
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Old 02-07-2018, 02:42 PM   #9
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Wow! I didnít realize it was a bleak situation! Iím hoping that caulking it will at least buy me some time. Thank you for your response.
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Old 02-07-2018, 03:04 PM   #10
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Welcome. Please put a first name in a permanent signature line for us to use.

The flexible sealant or caulk in the tile joints is not part of the waterproofing in a properly constructed shower. Your shower should have been completely waterproofed before the first tile was even installed.

I hafta agree with Ryan that the outlook for what you've got is grim indeed. You may buy a very little time with your new caulking, but you need to be planning for a more serious repair (likely a complete replacement) of that shower very soon.

My opinion; worth price charged.
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Old 02-07-2018, 05:03 PM   #11
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If you don't have the resources to repair/rebuild that shower now I would strongly suggest you discontinue use if at all possible. Mold abatement and dryrot of the structure underneath could turn this into a much more expensive repair. If this is a rental unit and you are the owner you are exposing yourself to significant liability. If this is a rental unit and you are a tenant you need to let the owner/management know asap because you have a duty to mitigate damages and inform the owner of a problem.
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Old 02-07-2018, 06:07 PM   #12
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Thank you. It is not a rental property, and I havenít been using this shower.
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Old 02-07-2018, 09:35 PM   #13
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Another vote to open it up from below. Post a pic if you can.
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Old 02-08-2018, 08:21 AM   #14
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Davy, thank you for the help. Would I call a plumber to open lower ceiling? What did you want a picture of?
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Old 02-08-2018, 09:05 AM   #15
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You can start with a plumber but they typically have a pretty high rate, along with a minimum. If you have anyone else you typically use for home repairs that,may be a better place to start. Or if you are handy at all, its fairly easy to use a keyhole saw to cut out a piece of drywall.

Once open you may be able to see a point of origin for the leak, or the whole underside may be saturated. Seeing this will help a little in understanding the severity of the leak.
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