I'm planning on using a roof mix on this. I am going to go do a test spot soon. Any other ideas what might clean this really well?
Ok,..so you got the job,..and you're now going to do a test spot? You do test spots BEFORE you give any pricing quotes,...
UNLESS you have alot of experience and you price it enough to cover the worst case scenario,..but that still isn't a conventional way to bid.
I have cleaned yellow brick like that over the years,..a strong bleach mix will get it cleaner and maybe get you a paycheck,..but to see true results on how clean it can be,..go get some acid use for cleaning historic type brick,..I've always used
Dietrich 101,..and it works really well.
These jobs require a degree of up close work on every inch,..applying your chosen detergent and washing off isn't an option if a quality job is desired. So the recommendation of a lift was exact. You don't want to do this from a ladder,.and it can't be done from the ground.
The bleach mix will work best on the concrete pillars and trim around the top.
*Keep in mind the higher off the ground you are, the further misting carries through the air. Be very aware of property and especially pedestrians. You need a lookout on these jobs or someone can end up with a face full of acid or bleach. Make sure you know where the runoff is going,..not sure you want the runoff going down city drains,..especially if you're using an acid.
*If you've never done this type of work,..you're about to see where your interest and pricing for these jobs will be for the next time.
**I sound negative,.but is a real World experience "heads up" sort of way,Ha,Ha,..
Jeff