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


Thread Tools Search this Thread
Unread 06-01-2018, 11:10 PM   #1
Registered User
Join Date: Jun 2018
Posts: 3
Backer board and drywall seam

Backer board and drywall seam make a very high spot. Unfortunately we have already taped and green waterproofed the seams.
Should we cut out the drywall and add hardi board to the ceiling or redo the whole three walls over again?
Attached Images
Zatar is offline   Reply With Quote
Sponsored Links
Unread 06-02-2018, 05:27 AM   #2
Kman's Avatar
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 12,401
Welcome to the forum, Z.

I assume you're referring to the horizontal seam about five feet up from the tub, is that correct?

Two problems you've got there. First, you used Hardibacker, which is a little thinner than 1/2" sheetrock. Second, the sheetrock at that point is usually thicker because where is terminates at the top of the fiberglass tub/shower, (that's what you had there, right?) the sheetrock is taped and mudded, typically.

Those two things are the reason I always just take out the wall board to the ceiling. So that's what I would recommend you do at this point. Cut it at that joint and use Hardibacker to the ceiling.

You don't have to waterproof it if it's above the level of the shower head, just tape and mud the seams.

The top ten reasons to procrastinate:

Kman is offline   Reply With Quote
Unread 06-02-2018, 09:06 PM   #3
South East PA Tile Contractor
tilelayer's Avatar
Join Date: Aug 2004
Location: Delaware County, PA
Posts: 6,584
Hi Z

Kevin is spot on with his advice.

Sometimes we leave the top piece because it is already taped into the ceiling, if you decide to remove that top section of tile you're going to have to tape the new cement board into the ceiling to prevent any types of cracking from occurring.

***New Here?? Click here to add your name to your signature***

Check out my Blog and see my latest tiling projects!

Specializing in Kerdi Showers
tilelayer is offline   Reply With Quote
Unread 06-10-2018, 01:01 PM   #4
Registered User
Join Date: Jun 2018
Posts: 3
Dry wall replaced with hardiboard

Dry wall replaced with Hardiboard and seams tapes. We have used Megalyte on the seams and everything is much more level after we smoothed out all the leveling material from our first attempt.
We will continued even though this has been a huge project to undertake.
We have a 1976 rambler, so anything can look better than the old fiberglass insert.
We are using 12x24 porcelain tiles and have a horizontal layout planned and will overlay the tiles around the niches. Overlaying appears the easiest rather than doing a trim or framing them out.
Our niches have been criticized over and over, but please just respond to technical advice and not shame us for trying a home project.
We will waterproof the seams from the showerhead down.
Is it a good idea to use the waterproofing on the entire wall?
It does raise the wall up slightly, but not enough to cause a problem more than 1 or 2/16ths
Attached Images

Last edited by Zatar; 06-10-2018 at 01:34 PM. Reason: wrong photo
Zatar is offline   Reply With Quote
Unread 06-10-2018, 01:05 PM   #5
Registered User
Join Date: Jun 2018
Posts: 3
Photo correction

Ya.We are having multiple problems with our remodel with lights too.

Has not been fun.
Attached Images
Zatar is offline   Reply With Quote
Unread 06-10-2018, 02:58 PM   #6
Registered User
rmckee84's Avatar
Join Date: Feb 2012
Location: Southern Illinois
Posts: 3,016
Did you install a moisture barrier behind the CBU? If not then go ahead and waterproof the whole thing.
Jack of most trades, master of none...
Ryan McKee
McKee Construction & Custom Tile
rmckee84 is offline   Reply With Quote

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
transitioning from backer board to drywall jm66210 Tile Forum/Advice Board 4 12-26-2016 08:36 PM
Backsplash: Backer board or Drywall pitterpat Professionals' Hangout 15 08-05-2012 01:53 PM
backer board on drywall ?? kingofcary Tile Forum/Advice Board 17 12-13-2010 04:47 PM
Backer board Seam Sealing Question ProStatusMattHD Tile Forum/Advice Board 2 03-28-2009 01:05 PM
Finishing Drywall-Backer Board Joint scooter42 Tile Forum/Advice Board 4 05-18-2005 05:53 PM

All times are GMT -6. The time now is 06:00 PM.


Powered by vBulletin® Version 3.7.4
Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.
Copyright 2018 John Bridge & Associates, LLC