What Is The Difference Between Self Etching Primer And Regular Primer?

Can you put Bondo over self etching primer?

As long as you let the primer fully cure and then scuff the surface it will be fine.

As a matter of FACT body filler works better when applied over a protective primer (epoxy or self etching) simply because the primer helps protect the bare steel from moisture..

Is etching primer necessary?

The job of self etch primer is to make a good surface for putting the next layer of paint on to the metal. If the metal is already a good surface for a direct to metal paint then you do not need (and do not want) an etching primer. The etch primer has been improperly thought of as a way to prevent corrosion.

Do you have to sand self etching primer?

In any complete restoration or body repair project, you will to sand primer at one point or another. However, most manufacturers of self-etching primer, due to the acid base of the products, don’t recommend directly sanding the self-etching primer.

Is self etching primer waterproof?

Re: What is “self-etching primer”? real etch primer is for use on BARE metal only. its very thin, it has no waterproofing properties. do not use it on body filler.

What primer should I use on bare metal?

Epoxy primerEpoxy primer works best on bare metal and is recommended for newly-fabricated metal parts or those that have been fully stripped. You can also apply primer surfacer or filler over epoxy primer to get rid of any minor imperfections and to create a flat surface before you paint.

Can I spray epoxy primer over etch primer?

It’s fine to spray epoxy over self etching. But self etching is mainly to slow down rust before you lay down your filler or other high build primers. If you do have a rust issue I would start by eliminating the rust issue ahead of time. Self etching primer may slow down the process of rust but it will not stop it.

Can you paint over self etching primer?

Self-etching primers have to have another primer over the top of them or the paint won’t adhere. It can’t be an epoxy primer, but it can be a urethane primer. In the meantime, it’s important to talk to your paint dealer about the time window allowed between the primer and paint topcoat.

What is the purpose of self etching primer?

Self Etching Primer is a rust preventive coating that etches and primes in one coat. Self Etching Primer features an advanced spray system that allows you to spray at any angle, even upside down for those hard to reach areas.

Do I need etch primer on bare metal?

The first step in painting metal is to thoroughly clean it. The metal might look and feel clean, but any grease, oil, dirt, or rust left on there will prevent the paint from properly adhering to the surface. … Self-etching primer is ideal for painting metal and creates the foundation needed to bond with the paint.

How many coats of primer do I need?

Generally, one to two coats of primer will suffice for painting interior walls, but how many you’ll need depends on the wall material, the paint color, and the type of primer used. Keep reading for the magic number of primer coats for all types of interior painting projects.