WE had the grout in our home steam cleaned and it did a great job----sparkling white----no damage. Floor counters shower stalls every thing.
I do all my own stunts
03 Dolphin LX 6355, Workhorse W22, 8.1 vortec, 04 CR-V, Blue Ox, Brake Pro----Norm, Barb and
Doc(He's a PhD)