Media blasting can be a very effective method for cleaning the outside of buildings. This cleaning process works well for structures that have been vandalized, and also works for wood and automobiles. If you need intensive cleaning for your commercial buildings or automobiles, media blasting could be a great option.
Media blasting can be pretty intense, so it’s best to start with a gentle medium if you’re not sure how the surface of your building will react to the cleaning. If the gentlest medium doesn’t work, you can work your way up to more abrasive cleaning agents. Walnut shells are usually best for gentle cleaning, because the shells aren’t very abrasive and the material is completely biodegradable. Another eco-friendly medium is ground corn cobs, and this a great option if you’re dealing with a sensitive surface and don’t want to etch the material you’re cleaning. Ground corn cob is also great for taking paint away from soft versions of wood.
Media blasting can also involve glass beads, since the beads provide a finish that is soft and bright. The finished result is often more attractive than using media that is angular or sharp. You can recycle the glass beads and use them up to 30 times, so it’s best to use crushed glass grit that is made from recycled glass so you can clean your cars or buildings in an eco-friendly way. If you’re using media blasting to clean an automobile, plastic beads are usually the best choice. The beads can be made out of urea, polyester, acrylic or melamine. The stripping rate for these materials is very high, but the plastic beads won’t cause any damage or scratching to the underlying surface. For jobs that involve surfaces that are very hard to clean, it’s best to use silicon carbide. This is the most intense material for media blasting. The blasting time is significantly shorter if you use this material, and the cost for using this medium is much lower than other materials. You can also recycle silicon carbide much more time than you can use sand or aluminum oxide for media blasting jobs. If you have very soft or sensitive surfaces to clean, it may be best to use steel grit or steel shot. This is a soft form of aluminum oxide and works best for etched surfaces because it makes the surface very smooth. Steel shot is often used for peening operations and makes the surface very polished. You can use steel shot up to 3,000 times and the material doesn’t leave a lot of dust, which means that it is not likely to cause respiratory problems for people who are working on the premises.
Media blasting can also involve sandblasting. This is a fairly new method of media blasting and compact dry ice is used to get the job done. The pellets are shot from a machine that uses a jet full of compressed air. Dry ice is used for heavy machinery and electrical materials. This is the preferred method for factories and industry buildings where large equipment is involved, and works as a great method where traditional sandblasting would be dangerous.
Media blasting also involves very thorough cleanup. If you decide to use aluminum oxide for a media blasting job, you’ll have to make sure the premises are very clean after the job is done. The material also needs to be disposed of properly, since they could be hazardous.