I start sweating every time I see the words Calcium Hypochlorite
LOL, I guess you would Doug, after what happened to you
I still think that IF the problems of scale formation could be solved, AC's dream might be realized.
And a good dream it was, readily available "Chlorine in a Box". A product that could easily and safely shipped and transported. Calcium Hypochlorite has many many advantages to a roof cleaning professional, and is one hell of a lot easier on plants, because unlike Sodium Hypochlorite, it does not break down into plant harmful Salt!
Ac's vision was a product that could be left on a roof, w/o fear of it being rinsed off by the rain and messing up yards.
It breaks down into Calcium, not Salt.
If your ground person was thorough in his rinsing off the plants, or if plants were covered during the cleaning, it could have been the TRUE "splash and dash" product we all seek.
Though some of my friends at the Roof Cleaning Institute Forum disagree, I still think (and hope) that it's problems
may be solved one day!
My health is not good, I can barely breathe anymore, and most any kind of exertion causes extreme coughing spells.
I lack the energy I once had, and it is all I can do sometimes in this bad Tampa economy to keep my company solvent.
I have neither the time, nor the energy, to pursue the development of Calcium Hypochlorite for roof cleaning.
However, even as it is right now, I think a
low dose of Calcium Hypochlorite, combined with a Chlorine Stablle Surfactant like Russ Johnsons wonderful Roof Snot, might very well be a great alternative to Spray and Forget, and other clean your roof over time Chemicals.
Back when AC and I were still talking, he told me he has had success with augmentation. Augmentation meaning adding smaller amounts of Calcium Hypochlorite to the standard roof cleaning mix containing Sodium Hypochlorite.
AC's research tells me that the dreaded scale formation MAY be directly proportional to the concentration (ratio) of Calcium Hypochlorite to water. IF this is indeed the case, then we may be able to get
enough Calcium Hypochlorite into solution to KILL the roof algae, w/o any trace of Scale !!!!!
Now, if we combine this with a Chlorine Stable Surfactant like Roof Snot, that has not only increased dwell time, but excellent penetration characteristics to carry the Calcium Hypochlorite Algae Killer deep into the Algae filaments, then AC could have one Hell of a product !
The potential market for a clean the roof with the rain over time product like this is of course not only roof and pressure cleaning companies, but homeowners as well!
And, since Calcium Hypochlorite is FAR less expensive then the Benzalkonium Chloride found in Spray and Forget and Wet and Forget, a lot of ass could be kicked in the marketplace.
Clean with the rain types of roof cleaning products are NOT rocket science. The concept is quite simple really. That is a plant (cynobacteria) growing on the roof. Kill it, and it loses it's ability to remain on a roof. It then become vulnerable to the elements (wind and rain) and goes away, over a period of time.