Hi All,
I'm going to look at a new building on Monday that are looking for contract cleaning. Part of the contract will be deep cleaning their floors on a rotational basis.
In the meantime, they have raised a couple of concerns with their current cleaning arrangement for the floors;
1.1. New porcelain tile showing difference in colour
1.2. Graphite tiles showing cleaning residue
1.3. Explain methodology for deep cleaning
I managed to sneak in today to take a quick pic of the floors. To me, the graphite tile residue looks like it could be grout haze that hasn't been cleaned off properly? I'm not sure at this stage how long the floor has been down. Can anyone help here with their thoughts?
Any advice appreciated as obviously I would like to be well informed to offer up a couple of reasons on what could possibly be causing the difference in colour to the porcelain and the graphite showing residue?
Many thanks

