Help on new signage touch up cleaning

I’m putting a bid in for cleaning behind new signage for a business. They want to remove the grime left behind the old signage.

Will cleaning just the grime from the old signage leave overly clean marks that are just as distracting? Should I quote to clean the entire wall behind and next to the sign?


Want to spray off the grime here but don’t want to have it lead to cleaning the rest of the building if it leaves obvious gradients in cleanliness

Do you know what that is? Doesn’t look organic.

No. It looks like just dirt that collected underneath the old signage. Was going to spray off with pressure

Ah yes, I attempted to do this earlier this year. I thought the black marks were organic but SH didn’t touch them. One of the guys on here pointed out it was residual sealant from the last sign, so I tried a strong degreaser and brush which helped but there was still a shadow left.

Did you have to clean beyond the sign or were clean spots acceptable next to the dirtier wall?

Looks more like a uv paint fade or type of adhesive… also wouldn’t want to hit that surface with a ton of pressure, looks like stucco or eifs.

How would you touch up this area or does it just need to be painted? Don’t want to commit to a job I’m not sure I can actually do. They’re expectation seems to be removal of all the spots from the old signage.

My first thought was just repaint it… even if you do clean up the hard edge, the area that was covered by the previous sign is still lighter than the rest of the wall. Bust out a ladder and see if 6% SH or a good degreaser will make it budge and then reassess… but I’m with @dcbrock in that there will always be a faint difference

I scrubbed the snot out of the spots with various chemicals, and of course it spotted up the windows like crazy so being a window cleaner I threw that in for him. He was just glad it was ‘better’ than before but I want thrilled.

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I run into this a lot doing strip centers. It’s virtually impossible to get them looking great for any even semi-reasonable cost. Especially where you’ve got spots between. Nothing you can do is going to make it look as well as if it was painted. For this one since it’s low, I’d probably just use a med. stiffness brush, spray some soap on it and brush, then rinse with medium pressure. May entail getting up on ladder with say a tire brush.
Don’t be cheap. You may get lucky and it only take you 30min but you could be there for a couple of hours and definitely set expectations.

This was for 5 very spread out locations. I called them back to give set expectations and it seems thue envisioned like new. Including filling in the holes from the last sign which is beyond my scope.

On these shared store fronts, if you were to wash the building area behind the sign for a business, that would require building owner approval right? It’d be a bad look if one section was clean and the rest left alone.

Anyway I turned down the job. They said they’d call me for anything else which is good. I was thinking $500 per location. I’d have to hire a helper to spot me while on the ladder too.