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 04-01-2020, 12:06 PM   #16
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 11,376
Andrew, let's keep all questions related to this project on this one thread, so that questions and answers aren't duplicated, and the history is in one place.

It's not unusual for water to creep up dried mortar a little. If the surface is wiped (mostly) clean of mortar beforehand, you won't see as much of it.

The key is whether or not you're losing any water. Since you have a little extra mortar that's drawing some water, you probably don't have to worry about the first bit of water loss. After a few hours, maybe a half day, it should stabilize. Then the only other issue is evaporation.

If you set a pan of water in the room, you can monitor the evaporation from it and see how much water you would lose. If the shower and the pan are losing the same amount, then you wouldn't have a leak. If the shower loses more than the pan, it's a possible leak.
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is offline   Reply With Quote
Unread 04-01-2020, 02:36 PM   #17
Lazarus
Texas Tile Contractor
 
Lazarus's Avatar
 
Join Date: Oct 2006
Location: Beaumont, Texas
Posts: 8,094
Andrew....A little water migration, under your testing is negligible. Bear in mind that this water test was under some pressure that doesn't happen under normal shower draining circumstances. Standard "water flow" whilst taking a shower won't happen with no pressure. Make sense?
__________________
Laz...

"Women and cats will do as they please, and men and dogs should relax and get used to the idea."
Lazarus is online now   Reply With Quote
Unread 04-01-2020, 06:32 PM   #18
maxwell_smart007
Registered User
 
Join Date: Jul 2014
Posts: 13
Over a full 24 or so hours, the pan lost about a sixteenth of an inch total - all of which seemed to happen overnight and then stabilize - and my dehumidifier upstairs says our humidity is about 30 percent, so it's likely evaporation and or the initial mortar wicking.

So the migration upwards of the water via the mortar on top of the kerdi is a non-issue?

I pulled the plug to ensure it looks good - and it does.

After draining, the kerdi is still fully adhered and there's no obvious issues. One area that's a bit weird is the kerdi outside corner that overlaps the curb - it seems a bit wet as if the water might have wicked up into it...otherwise, it looks very good other than the mortar wicking.

Should I kerdi fix the perimeter and/or overlap another layer of kerdiband without surface mortar and try again with a 'control bucket' to gauge evaporation, or am I overthinking things?

Edit: And sincere thanks for the advice!
__________________
Andrew
maxwell_smart007 is offline   Reply With Quote
Unread 04-01-2020, 10:43 PM   #19
Kman
Moderator
 
Kman's Avatar
 
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 11,376
If moisture is migrating into the seams more than 1/4" or so, then that needs to be fixed. Otherwise, I'd leave it alone.

Have you got a picture of the corner that you think might be a problem?
__________________
Kevin

The top ten reasons to procrastinate:

1.
Kman is offline   Reply With Quote
Unread 04-04-2020, 04:09 PM   #20
maxwell_smart007
Registered User
 
Join Date: Jul 2014
Posts: 13
Thanks Kevin - this is the one. It's an outside corner on the inside of the curb...but it's also where I lean when I'm looking at things in the shower, so it's possible that I just leaned on it with a wet hand and didn't realize...or splashed it on there when I was dumping the buckets...

I should have left it instead of draining to see if it dried out or got worse...20/20
Attached Images
  
__________________
Andrew
maxwell_smart007 is offline   Reply With Quote
Unread 04-04-2020, 05:36 PM   #21
smifwal
Registered User
 
Join Date: Mar 2016
Location: Kansas City
Posts: 1,285
Flood it again if it will put your mind at ease. I have done multiple flood tests on showers before for the same reason. Once I splashed water outside of the shower right in the corner by the curb and didn't notice it, came in the next morning and saw it sitting there. I thought well hell, checked the water level and it was good. I cleaned everything up and reflooded it and the next day all was well. I am confident in my methods of installation but things happen and I needed to be 100% sure there wasn't a leak. Whole lot easier to fix it then if there is a problem then down the road.
__________________
Shawn
smifwal 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
A few Kerdi-ish questions grinner Tile Forum/Advice Board 44 08-01-2016 08:54 AM
Kerdi Questions dolphyfan Tile Forum/Advice Board 12 05-28-2011 09:07 AM
Some more kerdi questions shenandoah75 Tile Forum/Advice Board 35 03-15-2010 09:24 AM
Ditra/kerdi questions; Minimum tile size, Kerdi on ceiling, ditra over wood? Delta_V Tile Forum/Advice Board 9 06-27-2006 07:27 PM
Some Kerdi questions kevreh Professionals' Hangout 5 02-24-2004 08:52 AM


All times are GMT -6. The time now is 04:41 PM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC