Most of my experience is in a commercial setting, big buildings, but I am by no means a pro at pressure washing. I'm a pro at managing and maintaining big buildings and the associated systems and equipment. I rely on people that are specialists such as the people on this forum and highly respect the advice. I've been around a lot of people who think they are pros at lots of different things and the truth usually comes out when they can't walk the talk. In the Facilities world I have to know a lot about a lot of things, but don't have to be a specialist at any. Anyway, I'm going to try the mix Pat Norman suggested above and hopefully get all this stuff off my house. BTW, in 20+ years, very rarely have I had to use chemicals for washing, usually cold water pressure was enough. Only used chems on grease and oil.
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Most of my experience is in a commercial setting, big buildings, but I am by no means a pro at pressure washing. I'm a pro at managing and maintaining big buildings and the associated systems and equipment. I rely on people that are specialists such as the people on this forum and highly respect the advice. I've been around a lot of people who think they are pros at lots of different things and the truth usually comes out when they can't walk the talk. In the Facilities world I have to know a lot about a lot of things, but don't have to be a specialist at any. Anyway, I'm going to try the mix Pat Norman suggested above and hopefully get all this stuff off my house. BTW, in 20+ years, very rarely have I had to use chemicals for washing, usually cold water pressure was enough. Only used chems on grease and oil.