Etch Primer Calculator
Calculate etch primer quantities, corrosion resistance ratings, and costs for metal surfaces, aluminum, and galvanized steel. Get accurate estimates for acid-etch, phosphoric acid, wash primers, and self-etching primers from leading brands like SEM, Corroseal, and POR-15.
Metal Surface Information
Tell us about the metal surface you need to prime
Metal type determines etch primer selection and performance
Total metal surface area to be primed
Surface condition affects primer requirements and coverage
Etch Primer Information
Etch primers are specialized metal primers that chemically etch the metal surface while providing corrosion protection and adhesion promotion. They are essential for difficult-to-paint metals like aluminum, galvanized steel, and stainless steel. The etching action creates a micro-rough surface that dramatically improves topcoat adhesion and long-term durability.