Is epoxy primer better than etch primer?

Is epoxy primer better than etch primer?

Some advantages of Epoxy over Self-Etch: With epoxy, you can lay it over just about anything, body work, sanded paint, metal and you’re going to be fine. With Self-Etch, if put it over different layers of paint, if put on too wet, it’s going to lift because Self-Etching primer has acid in it.

Is etch primer the same as epoxy?

SPI epoxy is specifically designed to be applied under filler, not so much for adhesion (filler sticks well to metal) but for corrosion protection. Filler and etch primer are both porous, epoxy is not, so epoxy provides a moisture barrier right at the metal where it’s needed the most.

Is self etching primer required before applying epoxy primer?

Epoxy Primer You can us it on top of self etching primer to build up to a level surface. You need to have a dry, very clean surface before you can apply epoxy primer. It comes in two parts which need to be combined and mixed before they can be applied.

What is the difference between primer and epoxy primer?

A primer covers scratches, and huge waves. Whereas, an epoxy primer is a non-porous sealer that protects the base primer from the paint. A primer alone cannot increase the life of the paint. However, epoxy primer paint increases the life of the paint with one coat alone.

Can epoxy primer go over etch primer?

It is no longer recommended to use an etch primer under an epoxy primer. Residual acid from the etch primer can interfere with the proper curing of the epoxy. This may lead to extended dry times, potential blistering, and even adhesion failure.

When should I use epoxy primer?

Epoxy primer refers to a sealer that has a non-porous finish. It is primarily recommended as the first base coat over bare steel. These base coats or epoxy primers can be used over fiberglass, plastic or the black iron phosphate coating as well.

Can I spray epoxy primer over etch primer?

When should you not use etch primer?

WHEN SHOULD THEY NOT BE USED? When corrosion protection in coastal environments is required, etch primers are not adequate. A zinc-rich primer should be used as part of a heavy-duty, high build, two-pack system. Etch primers work by acid etching the metal surface.

Can you paint directly over Self Etching Primer?

Self Etching primer can in fact be painted over but you need to closely follow the manufacturers application and top coat guide. As a rule of thumb Self Etching Primers need another coat of primer over them to fully seal everything up long term.

Does epoxy primer need to be sanded?

(Q) Do I have to sand Epoxy Primer before topcoating? (A) No, epoxy may be topcoated without sanding up to four or five days. After that point, you’ll need to abrade the surface.

Can you paint over epoxy primer?

You can paint over epoxy primer as long as it’s still fresh and hasn’t fully cured on the surface. When it’s still fresh, paint can be absorbed easily and will hold on for longer. Therefore, if you are sealing your car with epoxy primer, you can paint over it as long as you do it before it fully dries.