I realize that 1500 PSI is pretty low for a pressure washer, but I still want to make sure I don't damage my pressure treated deck.
Will using this unit with the nozzle at it's narrowest setting (highest output force, right?) damage the wood? If I were do it this weekend the deck will probably still be damp/soft since it does not get a lot of sun. There is a lot of mildew on the surface that I'd like to clean off.
How much of a mess will I be making? The deck is 8 feet off the ground and there is a nice looking wooden shed about 10' away. Am I going to blast mildewy water all over the roof and walls of the shed? Should I consider protecting the shed with tarps?