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Old 11-12-2017, 04:36 PM   #1
corys
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Prepping floor with removed vinyl stick down tiles for slate tile?

We are prepping our bathroom for tiling. The current flooring is those cheap vinyl flooring tiles (2 layers!!) over the slab cement. I'm peeling them up, and there is still sticky mastic left, which I am trying to scrape up.

I'm seeing a lot of conflicting information about how I need to prep to tile. Right now, my plan is to keep scraping, and maybe get a steamer involved to help?

I want this to be a really good, long lasting tile job.
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Old 11-12-2017, 04:57 PM   #2
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I doubt steam will help much, but I've never tried it.

If you want a sure thing, mechanically scarifying would be best.
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Old 11-12-2017, 06:49 PM   #3
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That's a good thought...would a belt sander be able to do the job?
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Old 11-12-2017, 07:00 PM   #4
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No it will gum up immediately.

If you want to make the sticky go away, we sometimes dust the floor with dry powdered thinset then scrape away.
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Old 11-12-2017, 07:48 PM   #5
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Would just getting it scraped up clean the concrete enough for the thinset to stick?
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Old 11-12-2017, 08:02 PM   #6
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Welcome, Cory.

Depends upon what it is and how clean you can scrape it. First thing you want to know is whether it's water soluble.
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Old 11-12-2017, 08:18 PM   #7
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Prepping floor with removed vinyl stick down tiles for slate tile?

In the past we have used diamond wheels on a handheld grinder.

Dust mask is a good idea. Someway to control the dust and keep it in the work area also a good idea.

Plan on floor leveler when your done if you made any deep gouges.


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Old 11-23-2017, 02:39 PM   #8
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Corys Bathroom

This is our bathroom remodel project! We are tiling the bathroom and shower, and building the shower pan.

I, of course, have so many questions.

First off, here's the plan for the shower. 36x61" shower with a 4" curb, and a 32x15x18 bench. There's also a niche area above the bench (this is a split level, and we have a natural ledge there that we are simply going to use).

My head is spinning with options for how to do this; I'm seeing lots of good things on the Kerdi system, but can I even use it with a shower of this size and shape?

I'm thinking I need to settle the HOW, and then figure out where to go from here. Thoughts on the best beginner way to tackle this?

I'm not afraid of learning...we've tiled floors and back splashes before with great results. I often find I have such attention to detail that I do the job much better than any professional I try to hire...maybe bad luck with pros or just caring too much on my part...
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Old 11-24-2017, 02:41 AM   #9
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Yes you can do Kerdi or other membrane...a good thing. A mud pan will be the order of the day because of drain location, but I like 'em better than foam anyway.

Some things to consider:

Although it's some work and may seem a little intimidating, moving drain to center of floor will pay off in symmetry and slope of floor.

If dimensions on your drawing are correct and I'm reading it right, your net width inside shower would be something close to 28". Narrower than I'd like to see if I had a choice.
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Old 11-24-2017, 12:08 PM   #10
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Thanks!

It's $2k to move the drain, so we can't really afford to move it...though now that we had the toilet moved and have seen how the pipes are layed, I could be tempted to center it. However, I don't want to move the plumbing...we'll think...

The squares are 4", not the standard 3", so the inside of the shower is 32"- sounds better? We could have the curb curve out a bit if we needed more, but 36"x60" seemed pretty big?
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Old 11-24-2017, 01:24 PM   #11
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Oh, I just saw the measurement mismark. The 36" is wrongly marked- it is 36" from the wall to the edge of the shower area....not into that little bump out that we are walling in.
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Old 01-05-2018, 04:58 PM   #12
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Ok, new question- we are preparing the floor for tile. The floor is flat with the exception of a 2" section where the floor meets the wall/doorway between it and the laundry room. We want to tilr both.

This small section dips about 5/16."

I am assuming self leveling compound is the answer?


Thanks!
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Old 01-05-2018, 04:59 PM   #13
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This is on the floor tile, not the shower pan.
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Old 01-05-2018, 05:32 PM   #14
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A patching/feathering product is what you need. I use Ardex feather finish, home depot has a similar product made by Henry.
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Old 01-05-2018, 05:47 PM   #15
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So I need this instead of floor leveler? Do I still need to prime the concrete?
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