Painting over cured POR-15^® must be done with care.  POR-15^® dries to such a slick, impervious surface that topcoats don't bond to it properly. That's why topcoats should be applied while POR-15^®is still in what we call the "finger drag" stage of drying.  If you've let your POR-15^® paint cure beyond that point, you'll need to use this self-etching primer to create the proper bond between POR-15^® and your topcoat.  With POR-15^® Self-Etching Primer, you can even topcoat POR-15^® that's been in place for months or years.

POR-15^® Self-Etching Primer is engineederd specifically as a bonding coat for POR-15^®.  It is NOT a high-build primer.  But it can be sprayed on almost any painted surface and can be topcoated in 15 - 30 minutes. It bonds incredibly well to POR-15^® Rust Preventive Paint, and all topcoats bond incredibly well to POR-15^® Self-Etching Primer. It can be sanded lightly, and, if desired, multiple coats may be applied.