oh dont get me wrong chris ,i love my set up the way it is and it kicks butt but you know the old saying that "bigger is better" ,well i cant wait to find out !!!!!
Yes, in THIS case, bigger is better.
The more flow your system can put out, the weaker mixture you can use, saving you money and time, and protecting the integrity of your customers roof.
It is a misconception that chemical roof cleaning w/o using presssure will not harm a roof.
That is wrong!
I have seen first hand the aftermath of the "Chlorine Cowboys".
Strong Chlorine solutions can certainly harm a roof, and we have seen pre mature granule loss caused by overly strong chemical solutions.
That said, a pair of the Delavan Pumps could be an awesome roof cleaning system!
Two will give you 10.6 GPM at 60 psi, but you can always crank them up a bit to 100 PSI.
You just sacrifice duty cycle a bit ....
10.6 GPM at 100 PSI will equal most gas powered pumps in flow, and exceed some too.
Our high flow pumps and big hose, and addition of TSP lets us clean at weaker mixture strengths, saving us money, and insuring the roofs granules will not be removed.