Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Remodeling

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

Reply
 
Thread Tools Search this Thread Display Modes
Old 06-20-2011, 02:03 PM   #1
Member
 
Join Date: May 2011
Location: Vancouver, Canada
Posts: 34
Share |
Default

Hardi-Board in a three sided shower, not laying flush


Hi All,

I am at the stage of laying up my drywall and am having some issues with the cement board not laying flat.


Background
  • The wall in question was framed on 24" centers.
  • non load bearing, interior wall
The issue
The board is sitting proud by 1/16" between studs as shown below


In hindsight i should have added some additional studs to bring the wall to conformance.

Should I
  1. Remove the top and bottom boards and re-stud vertically
  2. Remove the top board only and add a horizontal nailing suface
  3. try and blend it together with thinset and tape.
Lastly i am tiling with 12x24" tiles and believe the choice of tile will add complexity.

Paul
Attached Thumbnails
Hardi-Board in a three sided shower, not laying flush-drywall-not-flush.jpg  

Paul8434 is offline   Reply With Quote
Old 06-20-2011, 02:08 PM   #2
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 9,649
Default

Hardi-Board in a three sided shower, not laying flush


Quote:
In hindsight i should have added some additional studs to bring the wall to conformance.
Hindsight is always 20/20.

Cement board is not rated for 24" centers as far as I know. As you can see why. The wall must be flat and flat begins with the studs and the stud spacing.

Quote:
Lastly i am tiling with 12x24" tiles and believe the choice of tile will add complexity.
You have no idea how right you are.

The studs need to be 16" on center.

Bud Cline is offline   Reply With Quote
Old 06-20-2011, 04:29 PM   #3
Member
 
Join Date: May 2011
Location: Vancouver, Canada
Posts: 34
Default

Hardi-Board in a three sided shower, not laying flush


Hi Bud,

I think I knew the answer prior to posting.

To re-frame the wall will be interesting as i have 2x10 between the studs limiting my access to the sill board. Not to mention the completed pan.

Removing the cement board is not an issue.

Does You/anyone think i will be somewhat succesful studding horizontally to create a nailing edge? and avoid the above mentioned problems.

Lastly how much imperfection can i mask with thinset and tape when i seal the seams?

Paul
Paul8434 is offline   Reply With Quote
Old 06-20-2011, 04:34 PM   #4
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 9,649
Default

Hardi-Board in a three sided shower, not laying flush


Quote:
Does You/anyone think i will be somewhat succesful studding horizontally to create a nailing edge?
Don't see why you can't fir it out as long as you hold your spacing to not more than 16" and be sure to backup that seam with a strip.

Quote:
Lastly how much imperfection can i mask with thinset and tape when i seal the seams?
Shouldn't have any imperfections to "mask". If your substrate isn't flat my friend you are just moving your problems up a notch. The bigger the tile the flatter the substrate must be.
Bud Cline is offline   Reply With Quote
Old 06-20-2011, 05:26 PM   #5
Member
 
Join Date: May 2011
Location: Vancouver, Canada
Posts: 34
Default

Hardi-Board in a three sided shower, not laying flush


Hi Bud,

Not sure if i understand "fir it out". Can you explain further.

Secondly, I am guessing i am going to have additional problems.

The cement board is meeting existing drywall that was 1/2". The cement board was .3/8" (much to my dismay as the retailer had it listed as 1/2".)

Anyways i shimmed it out with 1/8" shims to bring it to level with the existing drywall.

I was planning on extending the tiles, past the new cement board and onto the existing board, and figured that i would be able to feather out the difference when mudding.

Hence my earlier question on how much imperfection can i mask with thinset/mortar and tape when i seal the joints?

Seeing your earlier answer i may be removing my cement board and starting over.
Paul
Paul8434 is offline   Reply With Quote
Old 06-20-2011, 06:05 PM   #6
Tileguy
 
Bud Cline's Avatar
 
Join Date: Mar 2006
Posts: 9,649
Default

Hardi-Board in a three sided shower, not laying flush


Sorry!

To "fir out" is to place strips of wood on top of other strips of wood in this case the studs. The studs are installed vertical. The firring strips would be installed perpendicular/horizontal to the studs and spaced every 16" on center. Making sure that the seam/juncture of the lower cement board and upper cement board have substantial firring behind it. This may require two firring strips at the seam/juncture location if using 1X2 firring.

Cement board is typically 1/2" in thickness but the quality control isn't that good these days. Fiber cement board is typically 7/16" thick even though they call it 1/2" also. Go figure.

Yes you can feather the cement board/drywall juncture but use thinset to do so. Probably shouldn't shim the drywall and create a curve you don't want. Filling it later is better in my thinking.

I would install the seam tape over the seams and wait until I was spreading the thinset to set the tile to fill the seams at that time. The cement board/drywall juncture may require a little advance fill.

Bud Cline 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
Problem with shower pan and drain ohiogirl1965 Plumbing 1 06-07-2010 06:33 AM
MW Vinyl windows w/ JChannel + Hardi Board Siding - Proper Flashing? jboeckler Building & Construction 1 09-20-2008 02:55 PM
laying tile on chip board?? J&K Flooring 14 08-15-2008 10:27 PM
Concrete Board in shower, need help please! floxy General DIY Discussions 18 03-01-2008 06:15 PM
Flush toilet, hear shower drain noise joedadog Plumbing 1 04-01-2006 12:52 AM




Top of Page | View New Posts

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