Repainting Warehouse Racks
Q. We recently have been asked to repaint old warehouse racks. They are steel structures. The paint has chipped off in some places and they are showing slight rusting. Is there a good, easily available chemical to clean them before we paint them with an industrial paint? A. S.
A. The first thing to do is clean the racks to remove any dirt and oily soils. Next, you must do something about the rust. You can remove rust chemically or by abrasion, that is by sanding, wire brushing, sand blasting, etc. As an alternative, you can use a dried-in-place chemical/phosphate/rust remover like those sold in auto parts stores, to pretreat the rust spots. Then, prime the pretreated rust spots. Finally, apply your industrial paint to the entire surface.
Better adhesion, enhanced corrosion and blister resistance, and reduced coating-part interactions make pretreatment a must.
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