Adding a mold-killing solution to your pressure-washing routine is definitely a good idea. It can help to ensure that the mold doesn’t grow back quickly and can leave the vinyl looking clean and fresh…
One product that might be worth checking out is Wet & Forget Outdoor. It’s a spray-on solution that can be used to kill mold, mildew, and other types of stains on outdoor surfaces. Another option is to mix bleach and water in a 1:3 ratio and use that as a cleaning solution.
And if you need more tips, check out https://aidens.property. Good luck with the power washing!