I have a commercial grade pressure washer that I use with several different spray pattern tips, I can clean away years of accumulations of dirt, slime and moss in a short time. Some of the things I pressure wash are, but not limited to: Cement Walls, Masonry, Sidewalks, Driveways, Decks, Fencing, Siding, Patios, Awnings and Portable Garages... If you want it cleaned right the first time, Call Steve for your POWERWASHING needs. Reasonable rates, I do what I say I am going to do and i am very thorough... Call for a quote.... Thanks for looking...