Unpopular opinion: You don't need to spend $500 on a patio cleaner attachment
I've been pressure washing for 10 years, and last month I finally tried something different on my own backyard pour. Instead of buying that fancy $200 rotary surface cleaner, I just used a 3 inch wide flat nozzle and worked in slow, overlapping passes. My concrete was covered in 8 years of moss and algae from the Pacific Northwest rain. Spent about 2 hours total, same as a normal job, but the lines were way cleaner with zero swirl marks. The key I figured out is keeping the tip exactly 2 inches off the surface and moving at a steady walking pace. Anyone else have luck skipping the expensive attachments?