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Posted by zxcvbob on January 16, 2007, 12:10 pm
thetiler wrote:
> In the old days prior to 1990 or so, when grouts were
> not polymer modified yet, we would mix liquid polymer
> admixes into the grout as a substitute for water. This
> would make the grout more stain resistant and make
> the color more consistent, but it doesn't truly seal it.
>
> Possibly his contractor mixed polymer modified powder
> with additional liquid admix, which is wrong and shouldn't
> be done.
> Don't give in to some kind of experiment. A bad
> grout job will ruin everything.
>
> The conventional way is to just use ordinary polymer
> modified grout (as all grouts come these days)
> mix it with clean water, and seal it with good sealer
> after 3 days of curing.
>
The tile store where I bought porcelain tiles for my bathroom a few
weeks ago sold me a quart of admix to put in the sanded grout mix
instead of water to keep it from cracking. And a pint of sealer to use
3 or 4 days after grouting. I don't remember what brand.
I think I need to read the directions on the grout bag carefully; maybe
I can return the admix when I take the extra box of tiles back...
Thanks,
Bob
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