Do you add ubik to your tank pureh2o? Or dip brush head
Neither

I use car detailing spray bottles £2 red,blue,green and yellow collars on the bottles so i know what chemical is what.
For roof and fascias, i use a good pump up sprayer that Mark M recommend (top job it does) and a clx 18 with its own pole hose and tap. On the end is a fan jet.
used it today, bloody awesome. Brought the pole in the sale as well. So i have a brand new clx as back up back up (back up is another extreme

)