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 04-07-2021, 04:18 PM   #16
MesaTileworks
Registered User
 
Join Date: Sep 2008
Location: Staunton, VA
Posts: 208
Follow-up question: after embedding the tape in the joint but before applying a liquid membrane, do both sides of the paper joint get topcoated with drywall mud? Or just the drywall side? Is it normal to cover the paper with mud or thinset before applying waterproofing?

(I guess I’m just wondering about the gypsum-based drywall mud and whether it’s ok to sandwich that between the CBU and the membrane—in this case Mapei Aquadefense).
MesaTileworks is offline   Reply With Quote
Unread 04-07-2021, 07:06 PM   #17
cx
Moderator emeritus
 
cx's Avatar
 
Join Date: Jul 2001
Location: Boerne, Texas
Posts: 92,996
Looks like that's a pretty low ceiling, Matt, or a high shower head location.

In any case, I wouldn't worry about it. You can cover it in some thinset mortar if you want, or just apply the AquaDefense. That drywall mud isn't an approved substrate for the AquaDefense, but I wouldn't be concerned in that application. See my warranty information below.

My opinion; worth price charged.
__________________
CX

Y'ALL NEW VISITORS READ THIS HERE!
cx is offline   Reply With Quote
Unread 04-07-2021, 07:23 PM   #18
BIGPHIL
Registered User
 
BIGPHIL's Avatar
 
Join Date: Oct 2011
Location: Gig Harbor, WA
Posts: 185
Matt,
Id' think that joint should have been set with alkali resistant mesh tape and thinset. From over here it looks like drywall mud and paper tape. I don't know if it's gonna cause you any problems, but I'd hit that mud and tape that with a quality laytex primer. The AquadDefense TDS says this: Gypsum wallboard (walls only, in approved application
areas only)

Not exactly your situation but by using a gypsum based compound, I'd classify it as such in your case. In any case, the joint is above the shower arm by more than enough so I'd not really worry about it. My previous advise of priming it still stands. Not sure your plans for the ceiling, but if your not tiling it, I'd finish that with whatever the final look and finish will be before tiling the walls.

Others may have more input, but that's how I'd handle it unless a better alternative came along, short of re-doing the joint.

Edit: seems CX beat me to the punch.
__________________
Phil
BIGPHIL is offline   Reply With Quote
Unread 04-07-2021, 10:13 PM   #19
MesaTileworks
Registered User
 
Join Date: Sep 2008
Location: Staunton, VA
Posts: 208
Ah, gotchas... that makes sense. So would a better solution for next time be to use the same alkali resistant mesh tape as for the CBU, and then use thinset for the wall side and drywall mud for the ceiling side? (Assuming no tile on ceiling.)
MesaTileworks is offline   Reply With Quote
Unread 04-07-2021, 10:53 PM   #20
BIGPHIL
Registered User
 
BIGPHIL's Avatar
 
Join Date: Oct 2011
Location: Gig Harbor, WA
Posts: 185
You certainly could do that, Matt. If you use white thinset mortar, not sure I'd go through the trouble of using two different compounds. I'd just embed the alkali resistant tape in thinset and once dried, run the normal routine of applying drywall mud and feathering it out on the ceiling side.
__________________
Phil
BIGPHIL is offline   Reply With Quote
Unread 05-12-2021, 08:13 PM   #21
MesaTileworks
Registered User
 
Join Date: Sep 2008
Location: Staunton, VA
Posts: 208
I’ve got a concrete slab under the bathroom-to-be and one corner of it dips back out of level. I’ve got to feather it from nothing to about 3/8” over maybe a 16” span and an area of maybe 2sf. Is there a particular mortar or patch product that folks here prefer, or is thinset or a medium-bed mortar a suitable product for a small patch like this?
MesaTileworks is offline   Reply With Quote
Unread 05-13-2021, 08:31 AM   #22
ss3964spd
Moderator
 
ss3964spd's Avatar
 
Join Date: Jul 2005
Location: Fairfax, Va
Posts: 4,275
Send a message via Yahoo to ss3964spd
I'd want to use an SLC product for that size and depth, Matt.
__________________
Dan
---------------------------------------------------------------------------------
If I recall correctly my memory is excellent, but my ability to access it is intermittent.
ss3964spd is offline   Reply With Quote
Unread 05-13-2021, 08:50 AM   #23
RightUp Sam
Becoming a Rakyat Warrior
 
Join Date: Apr 2021
Location: DFW-HEB
Posts: 24
Quote:
I regret my flat pebble floor. I went with white grout and after a pristine cleaning, it is already getting yellow in a few showers.

The installer (back before I dabbled in tile) managed to make a few birdbaths on the floor. Drives me nuts. I spent SOOO much money on materials that I cry thinking I will rip it all out because of the floor. I just keep putting it off. It doesn't leak and doesn't stink. 5 years old now.

Sealing doesn't make a difference. Using CLR or some kind of harsh acidic cleaner gets it clean and also makes the stones fade and dissolves the grout. Since I am going to tear it out, I don't care about that. I don't feel like scrubbing it forever. The shower is 4 feet x 8 feet.


I don't mean to derail the thread, and forgive me if this is a stupid question/idea, but I wanted to ask...

Could you use a pourable clear epoxy flooring product to cover the rocks, thus keeping them clean and leveling the floor? Or are the birdbaths too deep, so it would look weird (or it would ruin the "bumpiness" of the surface that I guess is one of the benefits of the pebble floor to begin with)?

I know you said sealing doesn't make a difference, but the epoxy wouldn't be a sealant, specifically, it would be a new surface.

Many if not all of those epoxies are waterproof; I've seen pictures of showers made from them.

Again, forgive me if it's a dumb idea, and I don't mean to derail the thread, but since the OP is considering the pebble floor I thought it might be worth asking.
__________________
Stacey
RightUp Sam is offline   Reply With Quote
Unread 05-13-2021, 11:29 AM   #24
MesaTileworks
Registered User
 
Join Date: Sep 2008
Location: Staunton, VA
Posts: 208
I figured an SLC was an option. Anyone use Planipatch for something like this?
MesaTileworks 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
Basement Bathroom Tile Question derekmjenkins Tile Forum/Advice Board 3 02-04-2013 10:54 AM
My basement bathroom ccp Tile Forum/Advice Board 4 07-23-2010 12:56 PM
Tile in basement bathroom and sub-floor question NewtonRob Tile Forum/Advice Board 11 12-27-2004 08:17 PM
Basement bathroom bigjimbo28 Tile Forum/Advice Board 8 11-29-2004 12:42 PM
New Basement Bathroom Drain Question. jsc Tile Forum/Advice Board 5 11-11-2004 08:44 AM


All times are GMT -6. The time now is 07:30 AM.


Sponsors

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