That wouldn't reach deep inside the grout, I would use a brush instead of pad.

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> On Sep 27, 2017, at 11:05 AM, Mark Winslow <midwesttileandstonemedic@gmail.com> wrote:
>
> I am bidding on a pizza shop floor is 2 years old never been sealed, they want clean and sealed, I believe it is porcelain, would a buffer and black pad or green pad work ok ?
>
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