Hello all! I want to start by saying that The Grime Scene is a wonderful resource! We have learned so much from your posts! Thanks!
On to our question...We have a Magnum Clean trailer unit, 3500 psi, 4 gpm. hot and cold water, 300 gal tank. We are cleaning a municipal water tower. The tower is about 100 ft tall, but we are only cleaning the bottom 30 feet or so. The tower is painted with a white enamel type paint, but is fairly uniformly black for the bottom 30 feet or so. When I went to bid the job, it was damp on one side from condensation, the black wiped right off with little effort. There had been a fence around it in the past, but foilage, trees, weeds, etc grew inside the fence to the "black" level. The fence was removed, the weeds, etc cleared out and and the tank repainted a couple of years ago. The only criteria was that we couldn't use bleach. We got an alternative from a local chemical supplier, Sani-T-10, a bleach alternative. The supplier gave me instructions to mix 1 gallon with 5 gallons of water and spray on with a pump up sprayer, let dwell for 20 minutes and rinse....well...nothing happened!
We did use hot water as well, the only way we removed any of the black was with high pressure at short range. We also tried our house wash mix , Aerodet, with the same results...Ripper seems to loosen it a bit, but none of the chemicals are working! We are about half done, and will have to return Tuesday...Any suggestions?
Hello all! I want to start by saying that The Grime Scene is a wonderful resource! We have learned so much from your posts! Thanks!
On to our question...We have a Magnum Clean trailer unit, 3500 psi, 4 gpm. hot and cold water, 300 gal tank. We are cleaning a municipal water tower. The tower is about 100 ft tall, but we are only cleaning the bottom 30 feet or so. The tower is painted with a white enamel type paint, but is fairly uniformly black for the bottom 30 feet or so. When I went to bid the job, it was damp on one side from condensation, the black wiped right off with little effort. There had been a fence around it in the past, but foilage, trees, weeds, etc grew inside the fence to the "black" level. The fence was removed, the weeds, etc cleared out and and the tank repainted a couple of years ago. The only criteria was that we couldn't use bleach. We got an alternative from a local chemical supplier, Sani-T-10, a bleach alternative. The supplier gave me instructions to mix 1 gallon with 5 gallons of water and spray on with a pump up sprayer, let dwell for 20 minutes and rinse....well...nothing happened!
We did use hot water as well, the only way we removed any of the black was with high pressure at short range. We also tried our house wash mix , Aerodet, with the same results...Ripper seems to loosen it a bit, but none of the chemicals are working! We are about half done, and will have to return Tuesday...Any suggestions?
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