Did a job on Saturday (3/28) and cleaned the driveway, front porch, and sidewalks around the house. Customer text me this Monday morning (3/30) with this photo:
I rinsed the surface, surface cleaned, then post treated with about a 4% SH mix. It hasn’t been super sunny or warm (Central Illinois). Is it possible this is still not dried out or what would have caused this? I am going back out on Thursday (4/2) to hit it again. Forecast has a lot of rain this whole week.
Just looking for answers on what caused this (I haven’t had this issue before) and if there is any other chemical or different approach I should take to correct this.
