Hello Nigel, You are right, we need this data. That is why, about two years ago, when I asked Michael where the data on concrete cleaning was and he told me he only had done testing on Fleet Washing I was shocked.
We've had 20 years to get our own data. We are way behind. I have been working on this for a while with a university, but I have not come up with a cost yet. Being that the only people interested in it are contractors we will have to pool our money together to get it done. Anyone who would like to pledge a donation towards this should get in touch with Nicole at the UAMCC so we can determine how much we have to work with.
We (the UAMCC members) are also working on some presentations. I had hoped that the PW#A would not take this idea and run with it but thanks to this thread Robert has made it very clear that the last thing they want to do is present us any differently than the dozens of pictures he's posted presenting us as polluters. Any attempt at this point to change course would be seen, by anyone with a brain, as a shallow attempt to change how THEY (the PwnA) look to the contractors, not how the contractors look to the regulators.
Regarding the customers you would serve yourself well to simply listen to Ron Musgraves. Phoenix, as opposed to Houston or Ft Worth, is one of the cleanest cities in the nation. Ron was a pioneer in frequent cleanings and has been a major factor in the city's acceptance of frequent cleaning.
Are you going to get 8 cents a foot when you are cleaning once or even twice a week? No, but since Ron and Scott have been able to charge lower rates and still make plenty of money to travel all over the place helping contractors without asking vendors to pay their way, I'd say they have a winning combination with frequent cleaning.
You will have to ask Ron how to train your customers in that aspect. We are working on that here. My son now has almost as many weekly and biweekly accounts as he does monthly or quarterly.