Yeah it wasn’t the water pressure I was concerned with, it was the leverage on the brush I was wondering about. Pre washing sounds like a good idea. The pole i have is the Reach-it mini with a constructor brush, not my top choice in equipment, but it was given to me. The brush is good for most jobs, I use it everyday, but the design of it is kinda stupid, it requires more pressure to keep the whole brush on the glass.
I wish I could get this one on routine maintenance! They’re selling the house.
I put my bid in, the contractor is supposed to get my price to the owner, and get back to me.