They don't even chip off if you wet the area first. I lived in a place that this was how the entryway was tiled, lol. Every time we mopped or came in from the rain we would have loose tiles soon after, so we couldn't use that entry again until it dried. Great landlord for most things, but he just laughed and told us to put up with it an he would fix it when we moved. sigh.

I would think the backing needs to be thoroughly cleaned as well? I would think adhesive is not going to work well if it's sticking to drywall compound instead of the wall.

It’s just drywall compound. Pop those tiles off because I guarantee that shit hasn’t dried. Scrap off with preferred tool and do it right

Elmer's would probably be better.

If they are stuck I would roll with it.

Don't go to the HVAC subs.....

April 1st?

Truth. If something is worth doing, it's worth doing right. How do you know you've done something right? By doing it wrong then redoing it :)

It's adhesive to paper... Why not use Emlers white glue adhesive, that's how strong your best drywall compound is going to be, and it will work on tile just as well (aka it won't work at all)

Just because something is an adhesive, doesn't mean it can work as an adhesive on any surface

lol if you hired someone and they made this mistake you should 1. not pay them. 2. tell them to gtfo immediately without touching anything else. 3. never call them again.

edit: i guess you guys think I'm being too hard on OP. its a DIY project, its not a big deal that he made a mistake and it should be easy to fix. on the other hand if you hired this out and the contractor made this mistake: It's honestly unforgivable that someone claiming to be a professional either couldn't tell the difference between thinset and drywall mud or didn't know they couldn't substitute that. they are really not similar enough in texture or appearance that anyone with any experience would make that mistake. even worse is if they didn't know the difference: that would mean that not only have they never done this before, they didn't even bother spending even 10 minutes educating themselves on how to do this job before they showed up. they would have known they couldn't use drywall mud after watching one video on youtube on tile before walking through the door.

bro 1. that has no adhesive of any kind in it.

2 its called "mud" because in reality ready mix joint compound is literally a fine white mud. it is a mixture of water and particles that can harden by drying but can be softened again by water. aka literally white mud.

I agree that the tile needs to be redone, but drywall compound is an adhesive. It adheres paper tape to drywall. The difference between the green and blue lid drywall compound is the amount of adhesives in it.

I think you are confusing adhesion and adhesives. Taping compounds do not have any form of adhesive added. They are just a bit different mixture, but no adhesive.

The different mixture causes better wetting/adhesion to paper tape. But the improved adhesion is not due to adhesive compounds being specially added. Otherwise it would be roughly impossible to sand.

Check the MSDS:

https://www.usg.com/content/dam/USG_Marketing_Communications/united_states/sds/usg-sheetrock-taping-ready-mixed-joint-compound-sds-en-61000010005.pdf

vs

https://www.usg.com/content/dam/USG_Marketing_Communications/united_states/sds/usg-sheetrock-all-purpose-joint-compound-ready-mixed-sds-en-61000010001.pdf

The main difference is in limestone amounts.

Lotta shit tradesmen out there.

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It’s absolutely not fucking like glue lmao.

If something is an adhesive then it fucking works as an adhesive. Drywall compound is not and does not work as an adhesive.

Stop posting.

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No thanks I’ll keep collecting upvotes for shitting on you.

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You should definitely write in to the family handyman magazine and share this story. I'm almost certain it will get published.

I honestly don’t give a fuck what you’re trying to do here.

You’re trying to convince yourself that the objectively wrong thing you said is correct. In front of people telling you that you are full of shit.

Just shut the fuck up and go away.

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Mainly because I'm lazy and hate doing rework. That being said - I only want to rework once. When the first tile fails I'd do them all.