Can you apply body filler over epoxy primer? We'll answer the question in this article and give some guidelines on how to apply the primer.

Mar 14, 2010 · Most I seen recommend not applying filler over, nor over bodyfiller. The acid and the polyester don't get along well, and the etch can cause the filler to stay soft underneath and never …

May 21, 2024 · Best adhesion is to apply the filler over fresh epoxy in the seven day window. Some of us can’t always get that done though so if it’s cured more than seven days it should be sanded with …

Dec 18, 2025 · Placing body filler over an incorrect substrate, such as a standard primer, is one of the most common mistakes made in DIY repairs. This sequencing error severely compromises the …

Even though traditional advice said filler should go directly on bare metal, newer filler and primer technology favors applying filler over epoxy. Epoxy creates a consistent, well‑bonded base—many …

On any restoration, it is always best to apply the body filler over the epoxy rather than applying filler over bare metal for best adhesion and corrosion protection.

Mar 17, 2021 · With more time to commit or more experience resulting in faster work speed, filler over bare metal followed by primer will work just as well. We have done it for years with inferior fillers from …

In this informative video, we will guide you through the process of applying body filler over epoxy primer, ensuring that your repairs are durable and long-lasting.

Jun 23, 2012 · Collision shops do not have the luxury of time it takes for epoxy to cure, so they generally prefer to apply the filler directly to the metal, shoot some etch primer over it and then 2k build primer, …

Jul 27, 2007 · Plastic filler is best applied over epoxy primer 24-72 hours after it is shot, depending on brand and temps. Next best is freshly ground, sanded, or sandblasted metal that is totally free of …