turbo nozzles are not good for most graffitti as they can cause to much damage to a lot of surfaces the best approach is use the correct chemical for the surface being cleaned, on some smooth surfaces you will find graffiti wipes are the best approach.
on stone or brick use a graffiti gel and wash off with a pressure washer at a medium pressure prefferably hot water, any areas that still show slightly clean again with a graffitti ghost remover.
turbo nozzles do have there use but shouldnt be the main approach to graffitti removal.
my main approach for grafffiti removal is chemicals. but the turbo will help it along the way. I have a normal, "fan" lance to use if need be.
I know turbos can damage the surface, i was just saying what i had available to use.
I used some graffiti wipes on part of it, on the corrigated steel, but it did nothing at all for the spray paint. some of the pen started to came off with the wipes. Thats why i need more
aggresive paint removers.
I usually use gel from a spray can, but some of this paint is really think, so i thought some stronger stuff should do the job.
i just need to know how much all the chemicals will cost, for all the removers and the ghost remover after.