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SolidPoint t1_izsl8na wrote

The reason is that drywall compound isn’t adhesive- it’s shaped dust. Those tiles are coming off the wall one way or another

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f37t2 t1_izszxqu wrote

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.

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MeshColour t1_izt16rg wrote

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

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Clark_Dent t1_iztsftv wrote

By that logic, pudding is an adhesive. Paper drywall tape will adhere to anything wet.

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Mr_Festus t1_izuveqj wrote

Try using water and report back to us

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Clark_Dent t1_izv0v01 wrote

You can stick a piece of paper to almost any surface with just water, yes. There's nothing more adhesive about drywall mud than dirt mud. That's part of why it's such a pain to work with.

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HawkspurReturns t1_izwbia8 wrote

Paper sticks to paper with water. Plasterboard has a paper face. Paper to paper sticks with hydrogen bonding. It is exactly how paper holds together - until it gets wet.

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captain-snackbar t1_izuvl0k wrote

No, not exactly. Paper tape is embedded in the compound — first you run a knife’s width of mud on the joint, then embed the tape, swipe with firm pressure to get excess mud out, then you mud over top of the tape. Altogether, the tape becomes encased in the mud not unlike rebar in concrete — serving a similar function, it prevents cracks from forming in dry mud.

If you just leave tape on top of the mud, once everything dries, you can peel the tape off without much resistance.

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marsman t1_izwolzi wrote

As a brit, s drywall compound just plaster (Quick google is less enlightening than I thought it would be)?

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[deleted] t1_izsm23r wrote

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SupaflyIRL t1_izswgkp wrote

“With adhesive”

Added.

Because drywall mud is non fucking adhesive.

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[deleted] t1_izsxupn wrote

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SupaflyIRL t1_izsy342 wrote

Lmao did you just google drywall compound and adhesive and link one that promotes “good adhesion”?

Do you fucking think that means it’s an adhesive?

Linked without comment too because you’re not even sure of the point you’re trying to make with the link.

Holy shit lmao, people on Reddit will try ANYTHING to be right about something they’d never heard of before googling it.

Never build anything.

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[deleted] t1_izsyhoe wrote

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SupaflyIRL t1_izsyn1m wrote

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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[deleted] t1_izsyr3t wrote

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SupaflyIRL t1_izsytc3 wrote

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

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[deleted] t1_izszhpx wrote

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.

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kneefglarp1928 t1_izt0ldk wrote

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.

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xaclewtunu t1_izsy8i0 wrote

Should hold tiles in a wet environment just fine. /s

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[deleted] t1_izsyjqn wrote

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SupaflyIRL t1_izsz3a7 wrote

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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