Previous Coating - Adhesion Test

You can apply our ROCKSOLID® or EpoxyShield coatings over a previously painted floor, but you do need to make sure that the coating that is on the floor is adhering well. Any loose or flaking paint will need to be removed before coating with any product. Always test the adhesion of the paint first to ensure that it is bonded well with the concrete. To test the adhesion of the remaining paint on the surface, do the following:
1. With a single-edged razor blade, cut an X through the coating and down to the concrete.
2. Apply a 4” piece of duct tape over the X and press firmly
3. Completely remove the tape with one quick pull.
4. If more than 25% of the surrounding area is removed with tape, the original coating is not adhering well, and the floor should not be coated unless all previous paint is removed.