Ceramic Tile Advice Forums - John Bridge Ceramic Tile

Welcome to John Bridge / Tile Your World, the friendliest DIY Forum on the Internet


Advertiser Directory
JohnBridge.com Home
Buy John Bridge's Books

Go Back   Ceramic Tile Advice Forums - John Bridge Ceramic Tile > Tile & Stone Forums > Tile Forum/Advice Board

Sponsors


Reply
Thread Tools Search this Thread
Unread 12-13-2017, 07:46 PM   #1
rjjencke
Registered User
 
Join Date: Jun 2012
Location: Phoenix, AZ
Posts: 48
Shower Leak Advice Needed

Hello all,

I have an issue with a shower I built. This is not my first shower build however it is the first one that includes a half wall which is where the leak is occurring.

For this build we used Denssheild for the walls and Mapei Aquadefense as the waterproofing agent. Thinset and mesh tape were used at all seams and covered with waterproofing.

This leak is coming out of the grout on outside edge of the half wall outside of the shower glass. The water appears to be traveling behind the grout and past the shower glass. A small amount of water sits on top of the half wall, although the top of the wall is sloped properly. See pic below:

Name:  IMG_3996.jpg
Views: 268
Size:  59.7 KB

I have re-siliconed all edges of the shower glass and confirmed that this water is not coming between the tile and glass.

We used Mapei Flexcolor premixed grout. The grout seems to be separating from the metal edge trim on the top and outside edge of the half wall. We have since filled these gaps with color-match silicone, however, the leak remains.

Name:  IMG_0015.jpg
Views: 260
Size:  26.2 KB

Any thoughts or suggestions are appreciated!
__________________
Robbie
rjjencke is offline   Reply With Quote
Sponsored Links
Unread 12-13-2017, 07:56 PM   #2
Carbidetooth
Hmmmmm
 
Carbidetooth's Avatar
 
Join Date: Mar 2010
Location: Boise, ID
Posts: 1,425
I don't know how much help it is, but typically when grout separates in that way, I'd suspect a wet and/or expanding substrate or framing problem.


Give us an idea of size of leak. A drop? A cup? Has it gotten worse with time?
__________________
Peter

Silicone (not silicon) Sealant Ranger
Carbidetooth is offline   Reply With Quote
Unread 12-13-2017, 08:16 PM   #3
tatumjonj
Registered User
 
Join Date: Nov 2012
Posts: 583
If the gap is increasing, the framing is likely swelling.
__________________
Jon
tatumjonj is offline   Reply With Quote
Unread 12-13-2017, 08:50 PM   #4
rmckee84
Moderator
 
rmckee84's Avatar
 
Join Date: Feb 2012
Location: Southern Illinois
Posts: 2,960
Are there penetrations on top the short wall where the glass brackets are mounted?
__________________
Jack of most trades, master of none...
Ryan McKee
McKee Construction & Custom Tile
rmckee84 is offline   Reply With Quote
Unread 12-13-2017, 09:02 PM   #5
Tiger Mountain Tile Inc
Registered Muser
 
Tiger Mountain Tile Inc's Avatar
 
Join Date: Feb 2011
Location: Issaquah, Washington
Posts: 6,640
I have the same feeling as Peter- that type of cracking usually indicates that it's taking on water.

Yes, it could be penetrations from the shower glass but it could also be something in the waterproofing. That spot will see a lot of water as anything that hits the glass there will run down.

Check for hollow spots along those tiles. It's not for sure, but usually the wood is swelling and will loosen those tiles on that corner.
__________________
Jim Upton
DIYTileGuy
Tiger Mountain Tile Inc is offline   Reply With Quote
Unread 12-13-2017, 09:19 PM   #6
rjjencke
Registered User
 
Join Date: Jun 2012
Location: Phoenix, AZ
Posts: 48
It is a decent leak that runs down the wall and creates a puddle on the floor outside the shower.

Yes there are penetrations on top of the wall where the metal brackets were installed.

We had to remove the glass and re-install. We put silicone in the anchor holes and then siliconed around the glass perimeter.
__________________
Robbie
rjjencke is offline   Reply With Quote
Unread 12-13-2017, 10:02 PM   #7
rjjencke
Registered User
 
Join Date: Jun 2012
Location: Phoenix, AZ
Posts: 48
Here is a pic of the half wall waterproofing. (It was Redgard not Mapei fyi).

For some reason the site keeps rotating my image and I can't correct it. I tried 10 times.

Name:  IMG_3474.jpg
Views: 241
Size:  26.1 KB
__________________
Robbie
rjjencke is offline   Reply With Quote
Unread 12-14-2017, 02:25 AM   #8
Carbidetooth
Hmmmmm
 
Carbidetooth's Avatar
 
Join Date: Mar 2010
Location: Boise, ID
Posts: 1,425
If that's the extent of Redgard installed I'll hazard a guess it's at least part of the problem. At the mil thickness Custom specifies, Redgard is not very transparent. That would appear to be a single light coat.

I've never used Denshield. It's a gypsum core, right?

You could tape some plastic onto glass and drape over that horizontal area and see if water slows down.
__________________
Peter

Silicone (not silicon) Sealant Ranger
Carbidetooth is offline   Reply With Quote
Unread 12-14-2017, 07:05 AM   #9
rmckee84
Moderator
 
rmckee84's Avatar
 
Join Date: Feb 2012
Location: Southern Illinois
Posts: 2,960
If you have screws in the flat part of the half wall I would venture to guess that's probably the source of the grout separating from the profile. Water is most likely getting in and reaching the fraiming there.
__________________
Jack of most trades, master of none...
Ryan McKee
McKee Construction & Custom Tile
rmckee84 is offline   Reply With Quote
Unread 12-14-2017, 08:32 AM   #10
rjjencke
Registered User
 
Join Date: Jun 2012
Location: Phoenix, AZ
Posts: 48
Peter, I don't know if that picture was after the final coat, however, I always use several thick coats of waterproofing. It may look transparent over the white thinset in that pic.

Denssheild itself is waterproof, except for the seams and where it is punctured, which is why all seams and screws are covered with Redgard.

I agree with all of you. It seams that the half wall framing is swelling I just can't pinpoint exactly where/how the water is getting in. I may try your idea of taping plastic to the glass and over the top of the wall.

Actually, our next idea/solution is to install a piece of granite on top of the half wall sloped towards the shower.
__________________
Robbie

Last edited by rjjencke; 12-14-2017 at 08:41 AM.
rjjencke is offline   Reply With Quote
Unread 12-14-2017, 10:15 AM   #11
rmckee84
Moderator
 
rmckee84's Avatar
 
Join Date: Feb 2012
Location: Southern Illinois
Posts: 2,960
The granite is a good idea assuming you plan to dissect the pony wall and see what is going on underneath. My fear is that you have moisture that has reached the fraiming which also means the gypsum core or the densheild has gotten wet. If thats the case it will need opened up and allowed to dry before you can remedy the issue. This is all speculation but I'm sure you know that.
In the future I would avoid penetrating any horizontal surface in the wet area.
__________________
Jack of most trades, master of none...
Ryan McKee
McKee Construction & Custom Tile
rmckee84 is offline   Reply With Quote
Unread 12-14-2017, 12:50 PM   #12
ZZZK
Registered User
 
Join Date: Mar 2016
Posts: 419
That glass bracket is familiar it looks like what came with my Dreamline enclosure. Is that bracket screwed into the top of the pony wall?
__________________
John
ZZZK is offline   Reply With Quote
Unread 12-14-2017, 01:04 PM   #13
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 10,986
Penetrating the waterproofing on a horizontal surface is a no-no. If you had a granite slab there and wanted to drill through it to secure the bracket, that's no problem, but you can't break your waterproofing layer.
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is offline   Reply With Quote
Unread 12-14-2017, 04:05 PM   #14
Davy
Moderator -- Mud Man
 
Davy's Avatar
 
Join Date: Jan 2003
Location: Princeton,Tx.- Dallas area
Posts: 31,858
You say you put pitch on top of the pony wall. Was the Denshield sloped before the Redgard was applied? Or did you just slope the tiles with extra thinset? How did you slope the top?
__________________
Davy

www.davystephenstile.com
Davy is offline   Reply With Quote
Unread 12-14-2017, 09:39 PM   #15
rjjencke
Registered User
 
Join Date: Jun 2012
Location: Phoenix, AZ
Posts: 48
Ryan and Kevin, we built the shower and then had a glass company install the glass. I 'figured' they knew what they were doing by drilling through the top of the wall and then applying silicone around the metal brackets. Is this the standard procedure for installing glass on a pony wall? I am not familiar.

Davy, the Denssheild itself is sloped before thinset and tile, however, there are anchors and screws going through both layers which secure the glass brackets.
__________________
Robbie
rjjencke is offline   Reply With Quote
Reply

Stonetooling.com   Tile-Assn.com   National Gypsum Permabase


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Need advice tile Floor shower leak Wilshire Tile Forum/Advice Board 7 01-17-2017 07:41 PM
Shower drain leak. Need advice blondjen Tile Forum/Advice Board 14 02-09-2014 11:15 PM
Advice on diagnosing bad shower leak? Chevy Chase Tile Forum/Advice Board 5 09-12-2008 02:58 PM
Complicated shower leak: advice... alternatives? VinceH Tile Forum/Advice Board 18 10-24-2007 11:21 AM
Advice for Homeower with Shower Leak Hokiedale Tile Forum/Advice Board 4 07-08-2006 02:08 PM


All times are GMT -6. The time now is 02:40 AM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC