monsterwash
New member
Hey guys, how is everyone? I have a lady who I've been washing her home for years but she owns a machine shop, that has never been cleaned. Take a look at these pics and plz let me know what you all think. This is over 12 years of build up from metal shavings coming through the exhaust vents. I read Daniels thread from February which was a similar situation. I guess F9 would work the best but these stains are thick. Also pricing the job, I do not do a lot of commercial, don't want to overbid but more importantly underbid either. Any thoughts