Here are some pics of a 1200 sq ft deck I clean. After the first time I cleaned this I got 7 more restaurants from this job.
Danny, what pressure were you using? Any cleaners or chems used?
The job looks good but I am skeptical of the surface cleaner and any pressure.
looks great! what kind of machine set up are you using? truck mount, trailer, mobile??? I do many decks but without surface cleaner (just the wand) do you highly recommend sc?
Danny, please allow me to offer a correction on one point. I believe that pressure stays constant thoughout your system, regardless of the number of outlets (nozzles). The only thing that gets divided by two when you have two nozzles is "flow". In other words, you were actually using 2000 PSI with half the flow going through each nozzle of your surface cleaner.
If you did this on most wood decks (PT or cedar) the surface cleaner would be working against the grain for most of the spinning cycle (and hollowing out the soft spots in between the grain at 2000 PSI). Since this was a composite deck (which is often quite a bit harder than either PT or cedar) using the surface cleaner might have been OK for that surface. I didn't see any rings in the finish, so it must have worked fine in this case. When I teach wood restoration, I reguilarly advise against using a surface cleaner. Composite surfaces are just tougher.