Did a pizzeria last night. The grout lines were so caked and packed with grease, that they were almost completely flush with the tile. I could easily scrape out 1/4" of grime from the joints. I used 4 scoops of TM in my 2g pump up, tried both the shark and demon, let dwell 15-20mins, and hit with with my spinner at 1200psi. most of it came good, but there were some grout lines the crap would just not budge no matter what i did.
What would be my next step, when i go back to clean the...
Nasty pizza resturant vs tilemaster
What would be my next step, when i go back to clean the...
Nasty pizza resturant vs tilemaster