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.
What is the difference between epoxy primer and etch primer?
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.
Can you use epoxy primer over self etch primer?
We suggest using a Urethane Primer over the self etching primer as a barrier between the self etching primer (
Do not use Epoxy over Self Etch
). Urethane primer can be top coated with most coatings so you will immediately eliminate any worries of adhesion issues with your top coat.
What is an epoxy primer?
It is
an airtight sealer that protects the primer before the walls are ready for paint
. It also acts as a binding ingredient between the concrete, and the topcoat of the paint. Epoxy primer paint protects the walls from extreme weather conditions.
Is epoxy primer better than regular primer?
1. Over Bare, Clean Metal – Epoxy primers are
amazing at sealing up bare metal
and from allowing moisture or corrosion to creep in. Epoxy primer actually seals out the oxygen from the metal, leaving no chance of rust or corrosion forming on the surface like some cheap spray bomb type primers.
Do you have to sand self-etching primer?
However, most manufacturers of self-etching primer, due to the acid base of the products,
don’t recommend directly sanding the self-etching primer
. … It should be noted that self-etching primer is mainly an acid base with pigments added, so you should be wearing a respirator when applying it.
Can you put self-etching primer over paint?
When applied to paint they can cause chipping and corrosion to the existing paint surface. This will require sanding as well as a fair amount of grunt work just to get the car ready to be primed again. For this reason
you should not use self-etching primer on existing paint or gloss finish
.
What is the difference between self etching primer and filler primer?
Because it cures quickly, it’s the method of choice for collision shops. But a key difference with etch primer is that
you need to apply your filler or bondo first directly to the metal before spraying it
.
Can self etching primer be used over body filler?
Yes
.
You can apply self etch over fully
cured filler.
When should self etching primer be used?
After you remove the rust scales from the metal on your car
, you need to apply self etching primer. It’s a mix of phosphoric acid and zinc. The way it works is that the acid forces the zinc into the top of the metal. It’s purely a surface coating, and it doesn’t stop the rust.
How soon can you paint over epoxy primer?
Epoxy primer has a
72 hour re coat
. Product sheet says recoat after an hour I think. Spraying DBU base coat over that. Got done with epoxy about half an hour ago, so will wait another hour or two and shoot the base.
How many coats of epoxy primer do I need?
The epoxy primer should be applied in medium wet coats, allowing a half an hour between each coat at around 70 degrees.
One to two coats
will render a one millimeter dry film thickness, which is typically enough to be completely effective. Make sure to evenly spray each coat completely across the bare metal surface.
How long can you leave epoxy primer?
epoxy can sit just about forever but if it sets more than a couple days you should sand it and spray a coat of reduced epoxy as a sealer. most epoxies these days have around a 7 day recoat window but the more you wait the worse the adhesion is. i always like to get something on it within
24-48 hours
.
Can you base coat over epoxy primer?
Base
over fresh epoxy is the best way to do it. Reduce your epoxy 1:1:1 so it is a thin “sealer” coat and it lays down texture free. Sand to atleast 320 before epoxy sealer.
How long should self etching primer dry?
Allow the final coat of Self Etching Primer to dry for a
minimum of 3-4 hours
before dry sanding, or 15 minutes before wet sanding with #400 grit sandpaper. Do not use near open flame. Dry and recoat times are based on 70°F (21°C) and 50% relative humidity.
What color is self etching primer?
Spray Primer; Self-Etching Primer;
Green
; 12 Ounce; Dupli-Color Self-Etching Primer etches and primes bare metal in one step, making it ideal to use as the first step in all automotive priming projects and for use on spot repairs.
