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 10-09-2007, 06:23 PM   #1
whk
Registered User
 
Join Date: Aug 2006
Posts: 11
Building up low spots with thinset?

This may be a dumb idea, but I'd rather hear from you than learn it first hand.

I'm going to be putting Mexican tile on a basement floor, but part of the floor (maybe 50 square feet) is about 1/2 to 1" low. I've looked around on the website, and it looks like I should use deck mud (and I've seen the instructions in the FAQ). I've got no experience with deck mud, and I don't know if it can be feathered out as needed. Instead I thought that I could just put down an initial layer of thinset, and then follow that with the usual thinset and tile installation.

I've also seen people suggest using self leveling cement, but I think that would cost an awful lot.

Thanks for the help,

Will
whk is offline   Reply With Quote
Sponsored Links
Unread 10-09-2007, 06:39 PM   #2
Old World Tile and Marble
Registered User
 
Join Date: Sep 2007
Location: albany new york
Posts: 1,341
check with laticretes tech dept but there med bed mortar does 45sq ft at 1inch thick if you put a slurry coat down and mix with there latex admix it might work but feather edges are tough with traditional deck mud
__________________
jason
Old World Tile and Marble is offline   Reply With Quote
Unread 10-10-2007, 06:48 AM   #3
james36
Registered User
 
Join Date: Apr 2007
Location: Maryland
Posts: 65
I've been researching the same issue and I have found that thinset is the wrong thing to use here - it is simply not designed to be built up much beyond 1/4" - apparently there are shrinkage and other potential issues if you try to builld it up.

Many people on this forum are fond of SLC and I'm sure you will hear about this shortly. I filled my lowspot with Mapei's Planipatch product - I was easily able to fill the low spot and feather out the edges - I used an old level to screed the whole thing flat - easy!
__________________
James
james36 is offline   Reply With Quote
Unread 10-10-2007, 06:53 AM   #4
Shaughnn
Trowel Monkey
 
Shaughnn's Avatar
 
Join Date: Jan 2004
Location: Kent, Washin'ton
Posts: 11,467
Will,
It sounds like a self-leveling material really is the best solution for your project. A bag should cover 50 square feet to 1/8" depth. Yes, that means that you may be using 8 bags but that extra $200 is going to be well spent creating a flat surface AND providing stable fill. Don't forget to use the Primer on the surface before applying the SLC.
Best of luck,
Shaughnn
Shaughnn is offline   Reply With Quote
Unread 10-10-2007, 05:05 PM   #5
whk
Registered User
 
Join Date: Aug 2006
Posts: 11
Thanks for the advice. I hadn't realized that the self leveling concrete was more dimensionally stable than a thick layer of thinset.

Will
whk is offline   Reply With Quote
Unread 10-10-2007, 05:16 PM   #6
John Bridge
Mudmeister
 
Join Date: Mar 2001
Location: Rosanky, Texas
Posts: 68,050
Send a message via AIM to John Bridge
Hi Will,

SLC is certainly easier, but I'd still go with deck mud. It's not as tough as you think. As to feathering, it only needs to be feathered to within about a quarter-inch. Thin set will take care of the rest.
John Bridge 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 10:29 AM.


Sponsors

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