GAF Lock‑Down Primer
Lock-Down Primer is designed to provide maximum corrosion protection, rust inhibition, and adhesion over steel, aluminum, and galvanized metal surfaces. It is
an excellent choice for use over sound rust on metal surfaces when sandblasting is not possible or practical. Lock-Down Primer exhibits the unique ability to “wet” into weathered substrates, developing superior adhesion while resisting corrosive conditions, even when sound surface rust is present. Loose, flaking, or unsound rusted metal must be brought into sound condition or replaced.
Lock-Down Primer is an excellent primer for use under acrylic or solvent-based roof coatings and industrial finishes. Refer to the GAF chart entitled Primer Recommendations for ease in making a determination as to which primer to use under a specific set of conditions.