How this coating category should be evaluated.
Primer is the connection between the substrate and the coating system. The correct choice depends on porosity, moisture, contamination, corrosion, existing coatings and the selected finish. A defined preparation and primer stage helps improve adhesion, uniformity and service reliability.
Application challenge
Failures often begin below the visible topcoat. Dust, oil, weak concrete, alkalinity, rust, moisture or incompatible old paint can reduce adhesion and create uneven absorption.
System approach
The evaluation should define cleaning and repair, mechanical preparation where needed, moisture or corrosion checks, the primer type and the permitted recoating window. A test area is recommended before full application.
