Did a little research before posting this, and I saw some folks reported washing in sub-50’s. I got a call last week from a local house-flipper asking if I could clean his house, deck, and metal roof this weekend. The weather forecast was partly cloudy and a high of 45, so I told him I would give it a try, but I am not guaranteeing the chemicals would work. Saturday afternoon the temperature peaked at 43, this was by far the coldest I have cleaned in, so I bundled up with my neoprene waders and Stormr surf fishing top. To my surprise my SH did not seem to be too effected. I had to hit a few spots twice and noticed I needed to spray a little closer when rinsing. About an hour before I left for the job I set two 5-gallon containers next to my garage propane heater to warm them up a little since they have been sitting for a few months.
So my question is…
What is the coldest you guys have cleaned in (or continue to operate in), and what observations did you make as far as effectiveness of chemicals, dwell times, equipment function, etc.?