bbtownman

I did not have a chance to take any photos of it yet, but there is no red clay soil in these parts just sandy loam, brown in color. The farms here are row crop, corn and soy beans and there is no livestock at this location. In a test area, I did try the straight 6% SH solution and even hand scrubbed it. While it did remove quite a bit of the stain, it was still visible on the painted steel siding. The buidling/s are 120' X 40' and repeated passes gets rather costly for them. If there is still a visible mark after all the passes, their best best may be to simply clean and repaint?? The galvanized grain bins on the other hand came out perfect with just pressure and a little heat. With all you experience/s - will it ever come clean enough NOT to leave a visible mark? Thank you all !!

My son and I started our business here in SW Iowa this last spring and although this is my first post, I have been using this site for information and FAQ's for a while. (GREAT SITE!) We have a tandem trailer unit that can do up to 4000psi @ 7gpm with one gun, or 3.5gpm with both guns running. We can also heat water to 210 degrees. I have used the Search for my question but I would like some more specific advice/guidance for a situation I am facing: Our area recently suffered flooding from the Missouri river, some of the buildings/homes had flood waters sitting on them for over three months! This left some nasty stuff remaining on the buildings, shops and anything it touched. Most of these "stains" go 3 to 4 feet up the buildings. Most of the farms have the Morton style, painted steel siding on buildings, workshops and equipment sheds. I have tried various mixtures of our regular house wash, (SC, 6% SH) and they are not getting the job done. Can anyone offer some suggestions on a chemical or mix that can be more effective for us? I appreciate the help!