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 02-22-2021, 04:36 PM   #1
tom31415926
Registered User
 
Join Date: Dec 2010
Posts: 15
Anybody recognize this material?

I'm doing demolition on a shower we had installed in about 2005. This was motivated by the discovery of mold at the bottom of a wall (in the hallway outside the shower).

I took off a layer of tile, and found this gray material on top of greenboard. There are 4 layers on top of the greenboard; each layer is about 1/8 thick. In the photos you can see the thinset between the greenboard and the gray stuff and between the gray stuff and the tile. The layers of the gray stuff do pull apart and there is no obvious adhesive between them.

Does anyone recognize this stuff? What is it?

Since this was installed in 2008, I'd think that there's no asbestos in it. But, I don't know. I checked on the internet and the guy who installed it died of cancer early in 2012.

All the work I did was with an N95 mask on, the exhaust fan on, and a window open. I've seen asbestos removal and what I did was surely not up to that standard. But at least the little bit of work I did was with some protection.

If the material does fall into the realm of "safe" I can continue but I'm going to use a respirator and goggles, at least. Other recommendations welcome.
If there is not a positive ID, I suppose an asbestos test is needed.

Tom
Attached Images
  
__________________
Tom
tom31415926 is offline   Reply With Quote
Sponsored Links
Unread 02-22-2021, 04:46 PM   #2
BIGPHIL
Registered User
 
BIGPHIL's Avatar
 
Join Date: Oct 2011
Location: Gig Harbor, WA
Posts: 185
Tom,
To my eye that material appears to be a fiber cement board like Hardiebacker.
__________________
Phil
BIGPHIL is offline   Reply With Quote
Unread 02-22-2021, 05:19 PM   #3
tom31415926
Registered User
 
Join Date: Dec 2010
Posts: 15
Thanks, Phil!

It seems too flexible to be like hardiebacker, with which I am familiar (well, 1/4 inch hardiebacker anyway). But maybe somebody else's product is a little different. Yes, cement board would make sense.

Tom
__________________
Tom
tom31415926 is offline   Reply With Quote
Unread 02-22-2021, 05:57 PM   #4
smifwal
Registered User
 
Join Date: Mar 2016
Location: Kansas City
Posts: 1,569
usg fiberock
__________________
Shawn
smifwal is online now   Reply With Quote
Unread 02-22-2021, 07:18 PM   #5
tom31415926
Registered User
 
Join Date: Dec 2010
Posts: 15
smfwal,

thanks! I looked up usg fiberock and it matches.
__________________
Tom
tom31415926 is offline   Reply With Quote
Unread 02-22-2021, 07:24 PM   #6
tom31415926
Registered User
 
Join Date: Dec 2010
Posts: 15
I note the absence of any waterproofing in the old shower, although the usg fiberock says it is "water resistant." I take that to mean that the product is dimensionally stable when it gets wet and is resistant to mildew. But it does not seem like the fiberock should take the place of waterproofing. Was that shower missing something?
__________________
Tom
tom31415926 is offline   Reply With Quote
Unread 02-22-2021, 07:45 PM   #7
Dave Gobis
da Man!
 
Dave Gobis's Avatar
 
Join Date: May 2001
Location: Racine, WI.
Posts: 5,623
It is unaffected by water but not waterproofing.
Dave Gobis is offline   Reply With Quote
Unread 02-24-2021, 03:00 PM   #8
tom31415926
Registered User
 
Join Date: Dec 2010
Posts: 15
Thanks Dave and everyone else.
I used a respirator and other ppe and started tearing it out. The board was wet and I have some mold, but not bad (so far).

Thanks again!

Tom
__________________
Tom
tom31415926 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
Anyone recognize this tile? jmedgar Tile Forum/Advice Board 8 02-15-2011 01:10 PM
Recognize this tile? JTile Professionals' Hangout 7 11-29-2010 08:24 AM
Anyone Recognize this Tile? nancem Tile Forum/Advice Board 7 10-28-2008 06:06 PM
Recognize him? ddmoit The Mud Box 13 07-26-2007 12:45 PM
Anyone recognize this saw? mtsgsd Tile Forum/Advice Board 20 04-17-2003 05:27 PM


All times are GMT -6. The time now is 03:01 PM.


Sponsors

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