Some surfaces can be a lot easier for you to pressure wash than others, and based on our findings the surface that most people find to be most challenging happens to be concrete. At the end of the day, concrete is a material that needs to be treated with a lot of care because of the fact that its unique structural and molecular makeup makes it prone to damage especially when pressure washing is being used to sanitize it to a reasonable enough extent.
Suffice it to say that if you want to power wash house at any point in the near future, you will need to wrap your head around optimized power cleaning methods for concrete. One thing that we would like to tell you here is that your nozzle choice matters more than you might realize. Some nozzles will concentrate the flow to the point where it would turn into a singular pressurized jet that might create scratches, and while it might seem a bit too much for concrete you should bear in mind that these high pressure nozzles are the very best ones to go for here.
That means that you need to use the red nozzle due to the reason that it is the only one that will reduce the width of the spray. The red nozzle will compress the entirety of the jet, thereby turning it into something that is decidedly sharp enough to slice right through any overlaying grease. Adding some degreaser helps to take your cleaning potential to a whole new plane of existence, so you would do well to try it out whenever the opportunity manages to avail itself.