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 > Professionals' Hangout

Sponsors


Reply
Thread Tools Search this Thread
Unread 01-20-2005, 06:20 AM   #1
John K
Registered User
 
Join Date: Jul 2001
Location: Southeast U.S.A.
Posts: 4,103
Shear

I see guys applying Ditra and setting tile and grouting to the base boards.
I also see guys doing the same thing with backerboards.

Which one will shear first?
__________________
John

www.precisiontilestone.com
John K is offline   Reply With Quote
Sponsored Links
Unread 01-20-2005, 07:00 AM   #2
Dave Gobis
da Man!
 
Dave Gobis's Avatar
 
Join Date: May 2001
Location: Racine, WI.
Posts: 5,560
Doesn't make much difference all things being equal. Shearing on floors is lateral movement in the tile installation caused by lack of movement accomodation in the tile assembly. The tile typically comes up clean and the thinset is on the substrate. I spent about a day and a half this week, literally, backing up a statement I made that even grouted into drywall you have created more than enough force to shear the floor. Uniform compressive load values of drywall are twice the shear of most popular thinsets.
Dave Gobis is offline   Reply With Quote
Unread 01-20-2005, 07:50 PM   #3
John Bridge
Mudmeister
 
Join Date: Mar 2001
Location: Rosanky, Texas
Posts: 68,047
Send a message via AIM to John Bridge
Probably neither one would shear from the underlayment. There is a chance, though, that the compressive force would lift the installation (underlayment and all) off the subfloor. I know from bleak experience that if a tile installation is going to "tent," nothing is going to stop it.
John Bridge is offline   Reply With Quote
Unread 01-20-2005, 08:05 PM   #4
Davestone
Florida Tile & Stone Man
 
Join Date: Apr 2004
Location: Naples Fl.
Posts: 22,690
Had people tell me it sounds like a gun going off when it jumps up off the floor.
__________________
Dave



http://Davestonestile.com
Davestone is offline   Reply With Quote
Unread 01-21-2005, 05:13 AM   #5
John K
Registered User
 
Join Date: Jul 2001
Location: Southeast U.S.A.
Posts: 4,103
I have seen this happen in slabs, but has anyone had experience with tile shearing off above grade floor system?
__________________
John

www.precisiontilestone.com
John K is offline   Reply With Quote
Unread 01-21-2005, 06:45 AM   #6
Dave Gobis
da Man!
 
Dave Gobis's Avatar
 
Join Date: May 2001
Location: Racine, WI.
Posts: 5,560
Yeah, 2 phone calls yesterday. One over a membrane and one over backerboard. Have seen a boatload otherwise over the years as well. Slab or suspended, it all moves, some more than others.
Dave Gobis is offline   Reply With Quote
Unread 01-21-2005, 07:45 AM   #7
tileguytodd
Official Felker Fanatic
 
tileguytodd's Avatar
 
Join Date: Jun 2002
Location: Northern MN
Posts: 14,398
Quote:
it sounds like a gun going off


That would be an SLC installation done over single layer plywood Dave.
Yep yep yep,scare the begeesus out of the homeowner watching a good old war movie when it happens.Talk about virtual reality and surround sound
__________________
TIP YOUR TILE MAN, His Retirement plan is not nearly as lucrative as yours and his waning years will be far more painful to boot.
He gives much so you can have a Beautiful Home!!
tileguytodd 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


All times are GMT -6. The time now is 01:48 PM.


Sponsors

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