October 22, 2018
Oils and other hydrocarbons can result in severe loss of adhesion from the substrate or between application coats.
These contaminants are not always visible with the naked eye but with a black light you can easily identify and determine the amount of surface preparation or cleaning needed prior to a floor installation, as seen in the photograph above.
Typically oils saturate the top 1/8 – 1/4 inch of a concrete substrate and can usually be removed with an appropriate degreaser or enzyme cleaner. Once the area is sound, dry and clean the concrete must be mechanically prepared to a porous and profiled surface to promote better adhesion at the bond line.
Mechanically preparing a contaminated surface before properly cleaning will only spread the oil contaminant and prevent adhesion. Please refer to the floor cleaning guidelines.
Rob Pacheco Jr.
Technical Manager – Northeast