Go Back  DoItYourself.com Community Forums > Interior Flooring, Floor Coverings and Coatings Center > Wall and Flooring Indoor Tiling
Reload this Page >

How much of a gap will thinset take up between sublooring and tile?

How much of a gap will thinset take up between sublooring and tile?

Reply

  #1  
Old 11-20-20, 12:13 PM
M
Member
Thread Starter
Join Date: Apr 2010
Location: USA
Posts: 404
Received 0 Votes on 0 Posts
How much of a gap will thinset take up between sublooring and tile?

OK, I've got my sub floor down. There is 1" to the toilet flange. I'm using 12x24 tiles, so will be using a 1/2" trowel for that and a 1/4" trowel for between the subfloor and hardi board.

QUESTION: If I use the 1/4" hardi board and the tiles are 1/2" thick, will I make up that other half inch in thinset? Or do I need to run with the 1/2" hardi board(which is really .42")?
 
Sponsored Links
  #2  
Old 11-20-20, 12:52 PM
H
Member
Join Date: Jan 2006
Location: USA
Posts: 3,521
Received 8 Votes on 8 Posts
I'm checking your math here. You say the tile is 1/2" thick and you are using 1/4" cement board. That's 3/4" right there. If the flange is 1" off the subfloor you only have a 1/4" to make up. The 1/4" trowel under the cement board will add almost no height. The trowel gets held at an angle that leaves less than 1/4" ridges, then the ridges get collapsed into the valleys when the cement board is set in. The thinset under the cement board is there simply to fill in all voids between the subfloor and the cement board. The cement board screws hold the cement board to the subfloor. The 1/2" trowel used to set the tile will raise the tile approx 3/16". Same principle as the 1/4" trowel described above. The less than 1/2" ridges will collapse into the valleys. You should be good with the 1/4" cement board. 1/4" cement board is for floors, 1/2" is typically used for walls but could be used for floors also.
 
Reply
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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description:
Your question will be posted in: