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Unread 03-20-2021, 01:14 PM   #1
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Tile stair risers: hardibacker or Schluter Ditra

Howdy. New here and I know stair riser tiling has been addressed since that's how I found my way to this forum.

I'm tiling a friend's stair risers with ceramic tile. I just finished my gal's enclosed patio and have leftover Ditra. I'm wondering if I can use this in place of Hardibacker board. There is not enough room to do both.

Can the Ditra be used alone or should I stick with using Hardibacker?

I've seen all the other posts with suggestions for leftover Ditra so if Hardibacker is recommended for stair risers I can use the Ditra for kneepads, lingerie, or maybe a new dog bed for my boy.

Thanks in advance.
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Unread 03-20-2021, 01:39 PM   #2
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Hi Matt? Welcome aboard.

Ditra will work fine if the risers are plywood. Also, the plywood needs to be stiff. It it's not plywood go to cement board.
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Unread 03-20-2021, 08:09 PM   #3
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Welcome, Matt.

Without knowing anything at all about your stairs, I'm not sure I could even recommend ceramic tiles for the risers.

I'm presuming they are wood framed only because you suggested using a CBU on the risers, which might work well.

I've seen the recommendation here on the forums occasionally to use Ditra, but I've never seen Schluter recommend Ditra for anything but floor installations. I'm wondering how you'll get the waffles filled properly on a vertical surface. I'm sure it can be done with the right thinset mortar mix, but I just don't think I'm seeing the advantage on those small vertical installations. Using up your extra? Well, maybe.

But I'd still recommend the CBU if your stairs are suitable for tiling.

My opinion; worth price charged.

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Unread 03-21-2021, 09:21 AM   #4
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Thanks for the responses. I agree about trying to fill the waffles on such a small AND vertical area!

Great forum John and plan on visiting more for advice on future installations. This is a perfect forum for people like me that don't do this for a living.

Regards from Colorado...

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