Epoxy primer

While epoxy primers are generally known for their strong adhesion and durability, some formulations can indeed be challenging to sand weeks or months after application. However, there are modern epoxy primers available that offer improved sandability. It's recommended to look for epoxy primers specifically designed for easy sanding and extended sanding window. Brands like PPG, Sherwin-Williams, and 3M offer epoxy primers with enhanced sanding properties.
Do You Have To Sand Epoxy Primer Before Painting? Our Rules