Over time industrial coatings deteriorate and become defective, often rusting flaking and blistering.
One of the things that make industrial painting different from regular painting is the amount of surface preparation required. Good preparation is key to a high quality, long lasting paint job, and this is especially true when the finished work will be up against weathering, chemicals and pollutants.
Ways in which industrial painters prepare a surface-
High pressure water jets to wash away dirt and grit
Abrasive methods to remove defective coatings, such as mechanical grinding and vacu blasting-
While both are highly effective, abrasive surface preparation methods will leave the area in better condition. Rust will be reduced, as will any dirt that has accumulated on the building or surface.
Most tanks, containers or industrial surfaces will have a coat of paint on them already. To ensure the next coat has sufficient adhesion, the defective areas of this first coat will often need to be removed. Sometimes the existing coating will need to be completely removed then primed using the appropiate metal primer. If the metal is galvanized it is best left unpainted. The galvanized surface will resist corrosion. If it is necessary to paint the galvanized surface, it will need a specialist primer or mordens solution prior to painting.
Qualified professionals will be able to do this in a variety of ways, depending on which way will best suit the job at hand. Application by roller and brush is an option, or for large surfaces spray coatings can be more cost effective and speed up the painting process.