Temporary patch to replace tile?

Good afternoon.
I had to remove some of my bathtub tile, as water had seeped behind the tile and soaked the plaster underneath. I removed the soaked plaster (oatmeal consistency) and dried out the wood lath.
The original tile job is poor (1950's homeowner job), but it will be six months to a year before I can get around to replacing it. What can I use to temporarily patch the bare area? it's about 2' x 2', with wood lath exposed. The patch would need to be waterproof, and hopefully look better than the spray-foam I used for an "emergency" repair.
Thanks -Mark
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Why 6 months to a year? In the time you could put on a temporary, you could fix it. Wouldn't take 4 hours.
s

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Shoring up some sagging framing below the bath. Demolishing the existing walls behind the tile. Plumbing. Electrical. Choosing tile. The list goes on.
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OOOOOOOOOOOOOOOOOOOOOOOOOOOOOOhhhhhh.. you didn't mention all that. Patch over with grout. It's easy to work with and you can paint it with exterior paint and it'll be pretty waterproof until your 'for real' repair.
s
wrote:

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So just mix up a sack of grout and use it as a waterproof plaster over the wood lath?
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Yep, just got through patching a big spot on a wall ourselves using this method. But we finished off with drywall mud for a smooth finish. (not a bathroom)
s

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Use some Moisture proof sheetrock and screw it over the damage......use some cheap water base caulk....big stretch around seams........seal with primer....... Rip out when ready to tile...... not pretty but a repair. jloomis

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