Go Back   DIY Chatroom Home Improvement Forum > DIY Repair > General DIY Discussions

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread Display Modes
Old 10-14-2010, 10:19 AM   #1
Newbie
 
Join Date: Oct 2010
Posts: 2
Rewards Points: 10
Default

Question about conrete board


So I'm doing my balcony and so far I have attached 3 pieces of concrete board to the subfloor, however I didn't notch the thinset I just applied it with the flat side. Is this going to be a problem later?

I'm talking about the concrete board to the subfloor not tile to board.

snowcow is offline   Reply With Quote
Old 10-15-2010, 08:22 PM   #2
remodeling pro
 
Join Date: Sep 2006
Posts: 1,399
Rewards Points: 500
Default

Question about conrete board


Most likely will not cause a problem. The notches help for two things. First, they allow for a deeper buildup of thinset so that you still get support in any low areas you span, while the empty spaces provide area for the excess thinset to go as you span the higher areas. Lightly tap around with a hammer on the pieces you have down to see if you can detect any large areas that sound hollow. If so, I would cut it out and reset that area, otherwise continue on , using a notched trowel.

troubleseeker is offline   Reply With Quote
Old 10-16-2010, 11:14 AM   #3
Member
 
Join Date: Mar 2007
Location: Long Island, NY
Posts: 9,519
Rewards Points: 2,000
Default

Question about conrete board


Quote:
Originally Posted by snowcow View Post
So I'm doing my balcony and so far I have attached 3 pieces of concrete board to the subfloor, however I didn't notch the thinset I just applied it with the flat side. Is this going to be a problem later?

I'm talking about the concrete board to the subfloor not tile to board.
How did you fasten the cement board to the subfloor? As to the notching, I think there could be an issue. You can't get a consistant level of thinset on the surface.
Ron
Ron6519 is offline   Reply With Quote
Old 10-16-2010, 12:05 PM   #4
Registered User
 
Join Date: Mar 2009
Posts: 9,968
Rewards Points: 2,000
Default

Question about conrete board


If exposed to the elements, rain, etc., I hope you water-proofed it all before the backer board: http://www.johnbridge.com/articles/ditra-balcony/
The notched pattern leaves ridges/bridges than span the low spots and compress in the high spots, with it flat is a inferior application. They make up for the inconsistency in the sub-floor to make a uniform surface for the tile (which don't bend or flex much without popping loose). Is the floor pitched to drain or fully covered above?

Gary
__________________
If any ads are present in my answer above, I do not condone/support/use the product or services listed, they are there against my permission.
Gary in WA is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Cement Board to Green Board Question ryan5068 Tiling, ceramics, marble 10 05-12-2010 06:29 PM
Tile over Particle Board dgun357 Tiling, ceramics, marble 2 01-16-2010 08:00 PM
rigid foam board and height ctkeebler Building & Construction 4 01-09-2010 02:42 PM
particle board question??? Axhammer Flooring 27 01-04-2010 07:08 PM
Hardie backer board DXS General DIY Discussions 2 03-17-2009 05:40 PM




Top of Page | View New Posts

Copyright © 2003-2014 Escalate Media. All Rights Reserved.