Mikey P said:
Color seal will stick to unsanded. I do use Grout Perfect if anyone asks.....
in a shower that's used twice a day?
for how long?
How new does the grout have to be?
Do you offer a guarantee?
I prompt all clients to have service at least once a year so we can make sure they have brand new looking floors/showers year round. Realistically I see people who do call for shower maintenance cleanings on a 12-15 month basis. Floors even longer.
Curveballs to watch out for are when the shower has been regrouted and lines are the height of the tile, or have been caulked. Both of those situations are better suited for complete regrouting.
Who offers a guarantee in showers? I do not. If they have any installation issues, they know the number to call. Can and do callbacks happen? Yes. Do they happen frequently? No.
A maintenance cleaning usually involves a simple pressure washing with the truckmount, followed by minor color touchup (usually from the blasting of the pressure lance), and minor recaulking as needed. It really isn't rocket science, hell we rarely use a cleaner of any sort on the initial restoration aside from super heated 1k psi water from the El Diablo.