1st time sheetrocker/drywaller

swtsae

So we ripped out the old back splash in the kitchen and obviously the sheetrock came down with it. We replaced the sheetrock but were by no means perfect about it. There are 1/4 in. gaps from sheet to sheet.

My question is this. We are planning on going right back over it with tile anyways, but would we still need to tape/float all the joints?

The tile we are using is 12"x"12 mosaic brick patter sheets like these http://www.google.com/products/catal...d=0CIsBEPMCMAE

sdsester

Did you use regular drywall or a tile backer? How did you end up with such large gaps? You definitely need to try and mud and tape but those gaps are going to pucker in on you so expect extra time skim coating.

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swtsae

We had those size gaps because the person helping me who has done sheet rock before said "If you're tiling over it, it doesn't need to be perfect just a flat surface for the tile to sit on."

Were they wrong?

Seattle2k

I wouldn't worry about it much. I've filled gaps larger than 1/4 before. I think what sdsester was saying is to be aware that when filling larger gaps, the joint compound will shrink when it dries. That just means that if this wall was not going to get tile, you would need to apply another coat of compound, to fill the shrunken space.


At any rate, your're tiling right back over it, so you don't need it to be pretty. As long as it's flat enough for the tile to lay smoothly, you'll be fine. If it were me, I would fill the joint with 45-minute setting-type compound, then lay mud and tape. Next day, I'd do my finishing coat of mud, dry, then apply tile.

sdsester

You can control the density of setting type "hot mud" so definitely use that. Mix only what you can handle before it cures. Minutes on the bag are best case scenario and the mud will start setting the minute moisture hits it. You want enough time to stuff those gaps and for the compound to stay wet enough for you to press in the tape.

If you feel more comfortable, get 45 minute and just wait for it to start setting up.

I usually mixed as needed in my drywall pan unless I had a laborer mixing for me and trading pans. Make sure you have a nice flexible taping knife. And invest in a nice drywall pan. Those cheap plastic ones tend to break.

I would get a cheap Rubbermaid type container to store the leftover compound sack.

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