Mud and drywall tape used on cement board

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Old 03-21-16, 09:44 AM
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Mud and drywall tape used on cement board

Hello!

The handyman who installed the cement board around my bathtub
used mud and drywall mesh tape.

I found out this is not correct after he was finished.
The guide reads "Joining Fill joints with latex-fortified mortar or Type 1 organic adhesive and immediately embed alkali resistant, fiberglass mesh joint tape.

No tiles on yet. I was thinking just to paint over everything with a sealer before the tiles are put on.

Should I try to peal the mesh and mud off and redo the edges and corners? ...or just leave it and paint with a sealer?
 
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Old 03-21-16, 11:02 AM
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If he used regular ready mix j/c you should be able to get it wet, dissolve most of the mud and remove it.
 
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Old 03-21-16, 11:10 AM
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If he used setting compound (hot mud) and alkalai resistant mesh, its fine.
 
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Old 03-22-16, 08:27 AM
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Hot Mud - not

Hi XSleeper

Thank you for replying -
I looked up what Hot Mud is and the handyman
who did the cement board used a ready mix, not a powder - I
believe the Hot Mud is mixed- I had to look up what Hot Mud is.
So he didn't use that.




-
 
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Old 03-22-16, 08:31 AM
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Water is ...well ...awesome

Hi markrs,

I am going to try to dissolve it with water
and see if that works.
Many thanks for a method to try.
 
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Old 03-22-16, 08:57 AM
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Hot mud or setting compound comes in powder, the 2 most common brands are Durabond and EasySand. They are not water soluble. Mud that comes in a bucket [premixed] is water soluble.
 
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Old 03-22-16, 09:02 AM
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It is nice to get clear information thanks again
 
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Old 03-22-16, 03:34 PM
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If you are dissolving the drywall mud, use thinset and the correct tape on any joints between boards and in the corners. Thinset mixed from a powder, not a ready mixed thinset. To clarify, it's OK to blend the edges of the cement board where it abuts to drywall with joint compound and regular/mesh tape. This is usually where the bullnose tile will overlap onto the drywall.
 
 

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