Cleaning metal silos, storage tanks or other equipment is important for the simple reason that the contamination on the existing paint film actually starts the degradation/corrosion process of the metal. If the metal is left uncleaned, eventually, but sooner than later, the metal will start to rust. It makes sense, especially economically to power washed/chemically clean the metal prolonging the lifetime of the original paint application.
McCahill Painting is certified/experience in using Ariel lift equipment which is required in the majority of these type of industrial cleaning applications. The really important piece of equipment we use are tow behind power washers, with 520 gallon water tanks that heat the water to 250°. In this type of cleaning application, water volume is much more important than water pressure/psi. Combining the 250° hot water with the right biodegradable/environmentally safe cleaner is the key to a successful industrial cleaning project. In this video you can see heavy contamination being completely removed which of course stops the paint film degradation/corrosion process from starting. It is time and money well spent to extend the life of the original/previous paint job. Besides that, from an aesthetic standpoint, the equipment looks much nicer.