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Old 06-05-2019, 07:38 AM   #1
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Removing mortar


Hi All

Not sure if i posted this in the right section...

I need your advice, i am remodeling our bathroom and have begun to remove tile. While removing the floor tile is relatively easy, I have a bed of mortar on a plywood subfloor. In the mortar is some sort of metal grid

How do i remove that?

I will be putting in new tile afterwords
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Old 06-05-2019, 09:16 AM   #2
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Re: Removing mortar


Do you have a radiant floor? Or is the grid more like reinforcing fabric?
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Old 06-05-2019, 09:48 AM   #3
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Re: Removing mortar


it looks more like a lathe - the metal itself is fairly pliable. where it hangs out, it easily bends and snips off.

A flimsy version of the attached pic

There is no floor heating
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Old 06-05-2019, 10:08 AM   #4
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Re: Removing mortar


The tile should NOT have came up easily.

Bad installation. or the underlayment is weak.

Anyway, for the mortar and lath, it might take a big hammer and pounding, but it will break apart.

Afterward, check for structure soundness of the underlayment, I think that it is under sized.

Sweep up all the crumbs, and anything that may weaken the new work.


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Old 06-05-2019, 10:29 AM   #5
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Re: Removing mortar


after smashing across 3 tiles and giving myself room to hammer. i was able to place a crow bar where the tile meets the mortar, and with a few whacks the tile lifts up.

So, basically hammer all day, i have a basic hammer that i use for nailing. Should i get a more heavier one?

Also, do floor scrapers work? my room is only 2.5ft by 7.5ft

what do you mean by undersized - i think its 1in thick.
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Old 06-05-2019, 02:39 PM   #6
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Re: Removing mortar


Quote:
Originally Posted by Amitabh9 View Post
after smashing across 3 tiles and giving myself room to hammer. i was able to place a crow bar where the tile meets the mortar, and with a few whacks the tile lifts up.

So, basically hammer all day, i have a basic hammer that i use for nailing. Should i get a more heavier one?

Also, do floor scrapers work? my room is only 2.5ft by 7.5ft

what do you mean by undersized - i think its 1in thick.
Even if you have a 24 oz nailing hammer, it is a bit lightweight, So yes I would get at least a 3 pound "shop" hammer, if you are able to swing it.

I meant that if you have less than a 3/4 inch plywood, or board underlayment it might be under sized.

The mortar is a cement material, and I know of no other way to soften it, for removal.
A scraper, needs more "elbow room" to operate than you have there, So I think that would be wasting money to but one.



ED

Last edited by de-nagorg; 06-05-2019 at 02:42 PM. Reason: adding more.
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Old 06-05-2019, 02:43 PM   #7
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Re: Removing mortar


thank you
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Old 06-05-2019, 03:04 PM   #8
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Re: Removing mortar


Quote:
Originally Posted by Amitabh9 View Post
thank you
You're welcome.

That's what we are here for, offer advice based on experience.

Good luck with your project.


ED
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Old 06-06-2019, 08:07 AM   #9
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Re: Removing mortar


If I was demoing this I would use a flat pry bar (like this pic) and a hammer, to "peel up" the mesh you're talking about.
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Old 06-07-2019, 09:56 AM   #10
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Re: Removing mortar


funny you mentioned that - that is exactly what i did...

i ended up buying a 4lb hammer and when i got home - i looked at the mesh and thought, what if i pulled on it, and wow - with a little bit a leverage, everything came off, really the only thing holding it down was the staples into the plywood. i didnt even use my 4lb hammer.
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Removing mortar-img_20190606_193230.jpg   Removing mortar-img_20190606_193558.jpg   Removing mortar-img_20190606_195221.jpg   Removing mortar-mvimg_20190606_193553.jpg  
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Old 06-07-2019, 10:02 AM   #11
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Re: Removing mortar


Great, then you still need to make sure that the plywood is the right thickness, not too thin.

And Super clean the remains of the old.

You can keep the 4 lb hammer, or return it, but I would keep it, for something later.

ED
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Old 06-07-2019, 10:08 AM   #12
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Re: Removing mortar


thanks

when i go to reapply the new mortar - do i need to add the same mesh back
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Old 06-07-2019, 10:14 AM   #13
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Re: Removing mortar


Quote:
Originally Posted by Amitabh9 View Post
thanks

when i go to reapply the new mortar - do i need to add the same mesh back
It looks like slat subfloor. I would make sure the slat subfloor is screwed down very good to whatever is underneath and then considering topping it with plywood sheeting, leaving a little room around the edges for expansion. Literally had exact same thing as you and research on here led to what's described above.

Someone else can probably give advice is you're looking to just put tile back down as it previously was.
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Old 06-07-2019, 10:27 AM   #14
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Re: Removing mortar


Quote:
Originally Posted by Amitabh9 View Post
thanks

when i go to reapply the new mortar - do i need to add the same mesh back
The mesh is supposed to add strength to the floor, and give the mortar something to "bite", to hold .

Looks a little like you have weak mesh, So maybe a stiffer mesh, all depends on the strength of the base floor.


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Old 06-07-2019, 11:37 AM   #15
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Re: Removing mortar


Doh, that's what happens when i look at the small picture and skim over your post.....definitely plywood subfloor, not slat haha.

Is there any reason you're staying away from laying 1/2" cement board, tiling that, and skipping the mortar mesh altogether?
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