hi phil
couldn't say specifically as i haven't a clue but in general i'd like to be able to identify different surfaces, know what surfaces pose a danger and how to avoid creating a problem, what chems to use for each surface i come across, not only to get the dirt out but other problems like moss or oil stains, and others. i'm guessing theres porous and non porous surfaces so obviously some could absorb certain chems which may or may not cause problems, i don't know really, just want to have confidence in knowing what i'm talking about when doing the survey, so identification is paramount. how to strip and reseal, how to apply anti mould (if there is such a thing)
think i'm making it up now,
flooring i think i will be cleaning are altro (obviously) or safety flooring, floor tiles and wall tiles, patio's ie... flagging, indian stone (got one of them to clean when i'm ready, with a moss problem) decking, concrete (that one with patterns imprinted in it

told u i aint got a clue) then theres the flooring with the letter z innit,

terrazine or something like that, or is it mezzanine, now do you see why i need a course. plus theres lino's and probably a million other types of flooring out there.
fck me, i'm writing a novel here. anyway you get the gist.
ps.... no wheres to far if i learn something that can make money