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 07-06-2021, 06:32 AM   #1
Lou_MA
Registered User
 
Join Date: Jul 2005
Location: Massachusetts
Posts: 1,063
Grout joint weeping moisture

Looking for any thoughts on cause and solution.

I’ve got a single grout joint that’s been weeping moisture over the past couple weeks. We’ve had a good amount of rain recently but this grout joint is several feet away from foundation walls and the weeping is isolated to that one joint. All the joints around it are dry.

Install is about 1 year old, over a basement slab. I didn’t do a calcium chloride test on slab but did tape down several squares of plastic for 24 hours...no moisture collected under plastic.

Prep was 2 coats Hydroban, then 12 x 24 porcelain set with Laticrete Tri-lite and grouted with Mapei FlexColor CQ. Grout is still hard, color is still good.
Attached Images
 
__________________
Lou
Lou_MA is offline   Reply With Quote
Sponsored Links
Unread 07-06-2021, 07:19 AM   #2
John Bridge
Mudmeister
 
Join Date: Mar 2001
Location: Rosanky, Texas
Posts: 68,417
Send a message via AIM to John Bridge
Hey Lou,

Looks like a small (seeping) leak. No plumbing anywhere near? Can it be coming from the room above?
John Bridge is offline   Reply With Quote
Unread 07-06-2021, 01:22 PM   #3
Lou_MA
Registered User
 
Join Date: Jul 2005
Location: Massachusetts
Posts: 1,063
John - no plumbing above or below. The nearest plumbing would be forced hot water baseboard heat above 2’ away. And the seepage is isolated, there’s no trail back to the baseboard or anything else.
__________________
Lou
Lou_MA is offline   Reply With Quote
Unread 07-06-2021, 09:19 PM   #4
Tool Guy - Kg
Moderator -- Wisconsin Kitchen & Bath Remodeler
 
Tool Guy - Kg's Avatar
 
Join Date: Feb 2005
Location: Oak Creek, WI
Posts: 22,835
Lou, do you have access to a non-destructive moisture meter? You could map the moisture under the floor and that would likely point you to the source.
__________________
Tonto Goldstein... but my friends call me Bubba

Help an awesome summer camp!
Tool Guy - Kg is offline   Reply With Quote
Unread 07-14-2021, 10:16 AM   #5
Just In Tile LLC
Registered User
 
Just In Tile LLC's Avatar
 
Join Date: Sep 2015
Location: East Texas
Posts: 1,495
Any feedback on what was causing this? My curiosity has to know the reasoning.
__________________
Justin
"Being world class means knowing you're good, but never satisfied you're good enough"
Just In Tile LLC is offline   Reply With Quote
Unread 07-14-2021, 06:03 PM   #6
Lou_MA
Registered User
 
Join Date: Jul 2005
Location: Massachusetts
Posts: 1,063
Bubba - I don’t have ready access to one but am calling around to see if anyone I know does.

Justin - I dug the grout out of that one joint. Left it overnight and came down to find that water had pooled in it. But it was below the surface of the tile, it wasn’t as if water filled and overflowed out of the joint.
__________________
Lou
Lou_MA is offline   Reply With Quote
Unread 07-16-2021, 02:03 PM   #7
Just In Tile LLC
Registered User
 
Just In Tile LLC's Avatar
 
Join Date: Sep 2015
Location: East Texas
Posts: 1,495
How in the world did water pool through two coats of hydro. One question turns into another.
__________________
Justin
"Being world class means knowing you're good, but never satisfied you're good enough"
Just In Tile LLC is offline   Reply With Quote
Unread 07-16-2021, 03:34 PM   #8
Lou_MA
Registered User
 
Join Date: Jul 2005
Location: Massachusetts
Posts: 1,063
Has me stumped. Grasping at straws here...

I’m usually paranoid about knife depth when cleaning thinset from joints but maybe I sliced the Hydroban?

Also, hydroban was only applied to within a few inches of the walls. Maybe water is coming up along the perimeter of the room and making its way under the tile to that one grout joint?

It’s very odd that it’s just one grout joint...
__________________
Lou
Lou_MA is offline   Reply With Quote
Unread 07-16-2021, 05:21 PM   #9
Just In Tile LLC
Registered User
 
Just In Tile LLC's Avatar
 
Join Date: Sep 2015
Location: East Texas
Posts: 1,495
I've only seen one basement around my parts, and here they nailed PT 2x4's around perimeter about 4 inches away from walls, caulked and painted them-and the channel they create which drains to a 2' lower section under the stairs to which a pump is connected.

I say that to say someone knew alot of water is brought in from the walls around the basement.
__________________
Justin
"Being world class means knowing you're good, but never satisfied you're good enough"
Just In Tile LLC is offline   Reply With Quote
Unread 07-20-2021, 10:37 AM   #10
Sharon @ LATICRETE
Registered User
 
Sharon @ LATICRETE's Avatar
 
Join Date: Sep 2015
Location: Bethany, CT
Posts: 308
The source of the moisture would need to be addressed. From the info we can see, it is likely hydrostatic pressure that is building up under his basement slab, and is being exposed now due to recent heavy rains.

They may need to live with it, or if they desire could get an expert in their to determine if a sump pump is needed, or they may be able to remove the flooring and install a moisture mitigation layer prior to installing new tile to remedy that MVER in the future.

But, for this one; they may have to just wait it out, and unfortunately there is no magic fix or product that would truly remedy that much moisture build up until it is fixed by engineering means. Anything other then that would be putting a band aid on it, and it will likely occur again over time.

Here is our TDS 166 which may help explain this better.
__________________
Sharon@LATICRETE
www.laticrete.com
Sharon @ LATICRETE is offline   Reply With Quote
Unread 07-20-2021, 07:46 PM   #11
Lou_MA
Registered User
 
Join Date: Jul 2005
Location: Massachusetts
Posts: 1,063
Thanks Sharon, interesting article.
__________________
Lou
Lou_MA 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
Weeping shower (for days) Scrummy09 Tile Forum/Advice Board 12 02-27-2017 09:36 AM
New shower floor grout lines are weeping djn Tile Forum/Advice Board 63 01-28-2016 10:25 AM
Crying over a failed weeping system....HELP snakecan2 Professionals' Hangout 32 07-24-2011 08:49 PM
Custom pan may not be weeping properly Ralphadams Tile Forum/Advice Board 8 09-10-2008 11:25 AM
Weeping hole concerns Larry R Tile Forum/Advice Board 7 06-29-2005 05:22 PM


All times are GMT -6. The time now is 07:10 AM.


Sponsors

Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC