5/8" Sheetrock And 1/2" Hardiebacker Problem - Tiling, ceramics, marble - DIY Chatroom Home Improvement Forum


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Old 02-02-2011, 01:09 AM   #1
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5/8" sheetrock and 1/2" hardiebacker problem


I used 1/2" hardiebacker around my bathtub. The rest of bathroom is 5/8" sheetrock. Therefore, there is a small 'step' on the wall between hardiebackers and sheetrocks.
Usually how do people deal with this matter?
Thanks!

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Old 02-02-2011, 02:08 AM   #2
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5/8" sheetrock and 1/2" hardiebacker problem


that is a 1/8in - your tiling so the tile will just be flush with or right on top of the sheetrock. Your fine.

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Old 02-02-2011, 07:56 AM   #3
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5/8" sheetrock and 1/2" hardiebacker problem


I cut 1/8 inch rippers in the table saw and staple that to the studs (with a small crown stapler)

Then I install the backer board---

I do not agree with PROremodel on this one -- 1/8 is a huge hump in a wall tile job --especially at the edge where your bullnose caps will set---Mike---
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Old 02-02-2011, 01:21 PM   #4
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5/8" sheetrock and 1/2" hardiebacker problem


I agree with Mike. 1/8" step is huge. BUT 1/2" Hardie is NOT 1/2", I think it's more like .40 +-, so the diff is even more.

Why was 5/8" drywall used? Are you sure it's 5/8" or did you assume it since you thought Hardie was 1/2"? Remember 1/2" wallboard probably has a bead of construction adhesive behind it, plus a number of layers of paint and so it's always thicker that new sheets, even with they are the same.

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Old 02-02-2011, 11:10 PM   #5
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5/8" sheetrock and 1/2" hardiebacker problem


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Originally Posted by JazMan View Post
Why was 5/8" drywall used? Are you sure it's 5/8" or did you assume it since you thought Hardie was 1/2"?
I used 5/8" new sheetrocks all around my house except bathtub area.

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Remember 1/2" wallboard probably has a bead of construction adhesive behind it
Do I need to put a bead of adhesive behind hardiebacker?
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Old 02-02-2011, 11:21 PM   #6
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5/8" sheetrock and 1/2" hardiebacker problem


You still need a moisture barrier...hardibacker is not waterproof. I agree with shiming the studs out to gain 1/8". Look up a few methods of waterproofing your installation on youtube and pick the one your are most comfortable with financially and skill wise.
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Old 02-02-2011, 11:36 PM   #7
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5/8" sheetrock and 1/2" hardiebacker problem


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You still need a moisture barrier...hardibacker is not waterproof. I agree with shiming the studs out to gain 1/8". Look up a few methods of waterproofing your installation on youtube and pick the one your are most comfortable with financially and skill wise.
Yes, I put a layer of 6 mil plastic behind hardiebacker as waster barrier.
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Old 02-03-2011, 07:47 AM   #8
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5/8" sheetrock and 1/2" hardiebacker problem


That is not a water barrier. So the Hardie is up already? If not, a surface membrane would be so much better.

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Old 02-03-2011, 02:21 PM   #9
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5/8" sheetrock and 1/2" hardiebacker problem


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That is not a water barrier. So the Hardie is up already? If not, a surface membrane would be so much better.

Jaz
6 mil plastic is not good enough for a water barrier?
Only housewrap or felt paper works?
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Old 02-03-2011, 03:51 PM   #10
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5/8" sheetrock and 1/2" hardiebacker problem


If the Hardie is installed already, you're fine with the poly behind it. It's just a moisture barrier, it is not a water stop. Next time consider applying a membrane on the surface of the tile backer, it's a much better method. That way the backer will not get wet or collect moisture or vapors.

For this method poly and tar paper are of some help. House wrap is useless to stop water in any form. House wraps are to stop the wind.

Jaz

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