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Unread 04-19-2007, 09:56 AM   #1
mommadeed
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Location: Long Beach, CA 1 bedroom condo built 1959
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dry time before toilet install

Hello again!

How long should I wait before installing my toilet on newly installed tiles?

I am installing 12" x 18" porcelain tiles on my bathroom floor. I bought Custom PORCELAIN TILE FORTIFIED THIN-SET MORTAR to use because it was recommended over floor warmers. When I put some of these 12" x 18" tiles on the tub surround walls using Wall Tile thinset, I noticed I was able to pry off a tile after 3 days to move it and it was still damp enough to scrape off the mortar.

The manufacturer says 24 hours dry time is enough for light traffic. Have you had any bad experiences with a toilet sinking large tiles because the mortar wasn't dry after 24 hours?


Thanks again (you've helped me many times during this project)!

Last edited by mommadeed; 04-19-2007 at 10:05 AM.
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Unread 04-19-2007, 10:02 AM   #2
Mike2
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Many mortars can be quite soft the next day and it sounds like yours is. Personally, I wouldn't risk installing the toilet now providing there is another bathroom to use. Besides, don't you want to grout the floor first before setting the toilet?

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Unread 04-19-2007, 10:06 AM   #3
mommadeed
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I will grout with Spectralock epoxy grout. If you recommend that I wait longer before grouting, I can install the toilet, then remove it and grout after a week or so.
We only have one bathroom.
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Unread 04-19-2007, 10:20 AM   #4
Mike2
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Gotcha. I can see and appreciate the sense of urgency.

Points of clarification: You mentioned two different types of mortars in your first post. Which one was soft? And which one did you use to set the floor tiles? And is the sub-floor concrete or wood?
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Unread 04-19-2007, 10:27 AM   #5
mommadeed
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I used Wall Tile thinset for the large wall tiles. That one was soft after a few days, allowing me to remove a tile.
I am mortaring the floor warmer now and haven't started setting tiles. I am using the PORCELAIN TILE FORTIFIED THIN-SET MORTAR.
I had a contractor add support to the subfloor (he sistered the joists and made it level). The subfloor is 3/4" plywood with a thin layer of mortar, then 1/4" Hardibacker screwed down. On top of that will be the Warmly Yours floor warmer set in the Porcelain Tile thinset.
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Unread 04-19-2007, 10:59 AM   #6
Mike2
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OK, so you really haven't set the floor tiles yet. Nor have you had a chance to see how hard the Porcelain Tile mortar gets in one day. I've not used that particular brand so I can't help in that regard.

I personally think there is some risk setting a toilet and using it the day after tile is set. If in your situation I'd be using a Rapid Set mortar for those tiles around the toilet.
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Unread 04-19-2007, 11:06 AM   #7
mommadeed
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Thanks!
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