Is epoxy primer required over 2k filler?

R

Rekha59

I'm stripping my MGB and getting close to the point where I want to acquire some primer to protect it. According to my study, everyone appears to like SPI primer.

The problem is that their website instructs you to apply epoxy priming, body filler, more epoxy primer, 2k filler primer, and more epoxy primer.

I don't want to deviate from their instructions and ruin the paint job, but it appears like I'll need gallons and gallons of paint simply to finish priming. That's equivalent to 8 coats of primer. Is sealing the body filler and filler primer really necessary? 19216811.mx

Thank You.
 
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Not NECESSARY, but highly recommended. It takes very little of the epoxy to cover a lot of panels. I never have worried about putting my 2K right over filler, but I'm sure there are good reasons to seal that too.
 
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Rekha59 said:
I'm stripping my MGB and getting close to the point where I want to acquire some primer to protect it. According to my study, everyone appears to like SPI primer.

The problem is that their website instructs you to apply epoxy priming, body filler, more epoxy primer, 2k filler primer, and more epoxy primer.

I don't want to deviate from their instructions and ruin the paint job, but it appears like I'll need gallons and gallons of paint simply to finish priming. That's equivalent to 8 coats of primer. Is sealing the body filler and filler primer really necessary?

Thank You.
Click to expand...

Before epoxy was developed and used in the automotive painting industry, covering filler with 2k was, and still is, an acceptable method, as well as spraying base over 2k. How long that method last for durability is debatable.

However, with the technological chemical advancements for automotive paint, epoxy has been the choice of auto manufacturers and high end restoration shops. Reason being, epoxy seals out all moisture and is highly resistant to gasoline and oils.

1. Spraying epoxy over bare metal provides a protective barrier from moisture before applying filler.

2. Spraying epoxy over filler provides a protective barrier to moisture intrusion to the filler.

3. Spraying epoxy over 2k primer provides a protective barrier from moisture as well as provides outstanding adhesion for base coats.

4. With the development of SPI epoxy, it has all the benefits listed above but, it has one advancement other epoxies don't have. That advancement is its sanding capabilities. No other epoxy sands as well as SPI epoxy. Also SPI UV properties allows the end user to use this product in it's bare state when used and applied correctly. I'm not aware that other epoxy manufactures have UV properties allowing the product to be exposed to the elements.

This is my understanding and interpretation of the many benefits of using epoxy thru out the course of a quality paint job. I'm using this method because I want the best paint job possible, which is why most of the high end restorations shops do it this way.

Here's hoping my explanation is helpful.
 
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Rekha59 said:
I'm stripping my MGB and getting close to the point where I want to acquire some primer to protect it. According to my study, everyone appears to like SPI primer.

The problem is that their website instructs you to apply epoxy priming, body filler, more epoxy primer, 2k filler primer, and more epoxy primer.

I don't want to deviate from their instructions and ruin the paint job, but it appears like I'll need gallons and gallons of paint simply to finish priming. That's equivalent to 8 coats of primer. Is sealing the body filler and filler primer really necessary?

Thank You.
Click to expand...

I see your location you listed as India. How did you hear about SPI?

I'd love to see some pictures of your MGB project, post some up.
 
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