What's the weirdest thing you've ever pressure washed

[Grizz]

Large Greenhouse Cleaning - Need Help

The black tarps that roll out are above your head and 12FT high. There is 12 sections of the black tarp cover totaling 65,000 square feet. (12 sections @ 5,400 sqft each) Just wondering how long a job would take like this? should I be using light chems and multiple applications? First time working on a greenhouse cover like this. Dont want to degrade any of the UV properties. [IMG_0227] [IMG_0213]