Tile and Grout Cleaning in Tyngsboro, MA. by Ralph Richardson | Mar 5, 2021 We recently completed this Tile and Grout Cleaning job in Tyngsboro, MA. We started using a heavy-duty grout cleaner, then scrubbed all grout lines with a grout brush. We then power washed the floor at 220 degrees at 1000p.s.i. to finish.