Epoxy Primer - What is it used for?
Epoxy primers are used to waterproof and therefore protect bare metal from oxidation problems.
By mixing them with an appropriate hardener, according to what it says on the label, you would apply the catalyst-type epoxy primers using a paint spray gun. One to two coats would be all that's required.
Two Application Methods:
1. You would be wise to apply epoxy primer to bare metal (once the old paint and any rust has been removed) before you would apply any other product.
You would do this for two reasons:
Advantages of using Epoxy Primer
Epoxy primer does not require sanding for most of the time after it's been applied and allowed to cure properly, unless runs or imperfections develop when you apply it. In this case, use a fine-grit sandpaper to smooth blemishes. Then touch-up spots with a new coat of material if required.
Each manufacturer offers its own epoxy primer and you are advised to only use those designed for the paint system you have chosen.
If you are living in a region with exceptionally harsh corrosion conditions (such as when during winter there is always plenty of salt put onto the roads) to maximize oxidation, rust and corrosion protection, apply catalyzed epoxy primers to bare metal and then do the same over any subsequent primer undercoats.
If you do live in an area like this, it may be a good idea also to consult with your nearest auto paint supply store and confirm with these people your intended application procedure for additional epoxy primer coats, just to be on the safe side.
Primer or Primer-Surfacer?
Before we begin, here in the UK 'primer-surfacer ' is simply referred to as 'primer' whereas in the US 'primer-surfacer ' is the common term used.
For the sake of ease writing this section, whenever 'primer' is written we indeed refer to 'primer-surfacer'.
When is Primer used?
After an auto body has had its sheet metal repaired and received its required coats of epoxy primer, minor blemishes might still remain, such as sanding scratches from earlier bodywork repair.
To cover them use primer products manufactured by the same company that produced the rest of the paint system you are using.
With primer having a high solid content, it covers these tiny surface imperfections and will allow you to sand the coated surfaces to smooth heaven!
Primer is NOT a substitute for filler.
Whatever you do, never confuse primer with body fillers. The materials used in body fillers offer a lot more strength and durability than primer will ever do.
Primer is only intended to be sprayed on surfaces to fill very slight sand scratches or other tiny surface blemishes.
Primer is the final undercoat product that is designed to be sanded and smoothed. Anything applied after them are simply used to seal based materials from absorbing paint solvents or to increase overall paint adhesion.
Therefore, you must make sure that your application of primer is uniform and all sanding be performed in a controlled and organized manner.
How to avoid problems along the way.
Refrain from washing or driving your vehicle during periods of wet weather while your vehicle is displaying only a primer finish, this is because some types of primer can actually absorb water.
This water can unfortunately become trapped inside this permeable material and remain there after paint has been applied and cured.
At this point, the moisture would move in one of two directions or both:
Always read information sheets and application guides that come with the primer products you buy. Remember, you can always ask for extra guidance from your nearest auto paint supply store.
Purchase plenty of sandpaper of the proper grit for smoothing the primer down with after you've applied it.
The correct process when applying primer.
The ultra simplistic definition of paint sealer is that it forms a sort of barrier between the undercoat and top coat (paint), it seals.
They really can be the difference between an adequate paint job and an excellent one.
In providing a little more detail, the purpose of sealers is:
When applying new paint over an existing painted surface, you would be wise to consider the use of a sealer, especially when you aren't sure what type or brand of paint is currently on the finish of the vehicle.
Advantages of using Paint Sealer.
Sealers do not require sanding for most of the time after they've been applied and allowed to cure properly, unless runs or imperfections develop when you apply them. In this case, use a fine-grit sandpaper to smooth blemishes. Then touch-up spots with a new coat of material if required.
It would also be to your advantage to use sealers for jobs on which new paint will be applied over factory finishes that were baked on at temperatures around 450 degrees F.
New paint will have a difficult time penetrating the surface of these hard and durable paint finishes in order to achieve maximum adhesion.
Safety Disclaimer: Always follow the recommendations of your nearest auto paint supply store or by referring to the manufacturer's application guides and information sheets when dealing with any type of auto paint product or piece of equipment.
Copyright © LearnAutoPainting.com 2009. All Rights Reserved.
"What can I say, fantastic would not cover it. The most useful videos I have ever bought, been around cars all my life, and have a few parked outside, we have an airport travel company and now I can repair and paint them, I can save a fortune on repairs, thank you." - Reg Dugmore, Millennium Travel, Hartford, CT, USA
"I've done the side of my VW T4 Transporter and I can't believe the results I have achieved, it looks amazing! Even the guy at my local paint supplies shop was impressed. I spent £368.00 on paint and a second-hand compressor and Sata gun. THANKS A LOT FOR YOUR HELP." - Scott Smith, Telford, United Kingdom
"You guys are the best resource for information on how to paint your car. I succeeded in painting the bumpers on my 2000 KIA Sephia they look great, thank you for your help...I really learned from it." - Jose Garcia, Bloomington, CA, USA
"I believe that because of your system, I understand the process of restoring a car, and through practice, will produce the desirable results. I am more positive now than I have ever been that we will eventually have a great looking finish on the car." - Paul Dawson of Happy Valley, Adelaide, South Australia
"The videos are very helpful and I can see the pros at work, this is as good as on hands experience. Beats reading books and trying to work out what they mean, thanks very much." - Robert Zander, Rooty Hill, NSW, Australia.
"I got a lot of help from your info. I painted my car and it came out a lot better than I thought I could have ever done. Thanks for all the help." - Paul Harvell, NY, US.
"Watching a professional along with details about the why and how of every step was just what I was looking for. Being able to download the videos and have them available to watch at any time is well worth every penny." - Dave Holden, Bayard, New Mexico, US
"I believe the cost of this system is a drop in the ocean if you look at the details and demonstrations given. So yes, I am happy I have definitely saved money so far. I have already recommended the system to a few friends." - Ben Walker, Shrewsbury, Shropshire, UK
"I have really enjoyed the information that I have gotten from LearnAutoPainting the System, it is very good information and well worth the cost. I appreciate your personal and quick response. Thank you so much." - Calvin Woods, Queen City, TX, US
"The videos are priceless pieces of information and excellent value for money." - Jeremy Lanfranco, Birkirkara, Malta
"Hi XXXXX, I have been an auto body technician for about 20 years now and I like the ideas and expertise that you guys supply. I don't have many problems with my work, just from time to time such as with matching pearl paint and other small blemishes like dust and other things. I want to thank you guys for your site, it helps to educate people. I've learned a few things from you guys like what a stud gun is. Thanks again for all of your tips and help." - Rodger, St. Lucia, Caribbean
"Thanks a lot for all of the high quality information that has been prepared and so graciously forwarded on to many people like myself. All of the tips and techniques have helped to produce an outstanding result in my restoration of my 1975 two door Range Rover. Once again thank you." - Mike Remkes, Adelaide, Australia
"I would like to take this opportunity to thank XXXXX and all his staff in making this amazing book 'How to Paint a Car - The Written Guide' available. It helps a lot, especially for those who are trying to excel in the car painting business like me. It's given me a lot of tips and techniques on preparation ready to paint the desired color." - Troy in the Philippines
"Thanks a lot this is really helpful and I could not have done the job without the system. The money was well spent. Now I just have to sand like that boy from the karate kid!" - Steven I, Chicago, IL, US
“Following substantial paint work damage due to vandalism, my aging car was practically a write off. I had no knowledge whatsoever of where to start but this pack, along with some time and patience allowed me to remove all of the scratch marks for £120. Bargain.” - Tom McCombie, Manchester, UK
“Looking at the video clips for the first time I’m getting a lot of ideas and info and I believe I am confident that I can do a good job.
The reason I bought this system was to have some tips and ideas on how to go about painting my whole car and also using the correct grades of sandpaper, what sort of paint, plus many different techniques in doing it the proper way. I’m absolutely happy with my purchase.
Number one benefit about this system would be mainly the correct approach in
painting, fixing dents, spraying, masking, materials and tools used to perform the task. Sure,
I can recommend this to anyone.”
"I love cars and how they would look if painted but I can't do it since I don't know how to paint. Now I've found a tutorial that teaches how to do it. 'How to Paint a Car - The System' teaches you how to paint professionally and do it right the first time, also some good techniques in paint preparation. I like the idea that I could readily get what I purchased; probably this is one of the reasons that I immediately purchased this product." - Aldwin Aurelio, Quezon City, Philippines.
"It is a pleasure and wonderful to know there are people like you who have got a web site like this to help people like us who need help with our cars, to have the knowledge that we can gain from experts. I am glad that I have come across your web site and I want to thank you all for your anniversary sale at such a low price. Happy 1st Anniversary and may you have many more. Excellent work guys you deserve an A+." - Peter Stephens, Perth, Western Australia
"I restore Austin minis and do all the work except the paint and I wanted to try the painting as well for the experience and the cost saving. I am very pleased with the information provided. I am a beginner. Never painted a car before. By studying 'How to Paint a Car - The System' I was able to successfully carry out the required work to my vehicle. So far I have primed two cars and painted/clear coated one car on the underside/firewall. I got an excellent result the first time. The number one benefit of this system is being able to see how a professional does the job. I would recommend this to others." - Mandeep Jawanda, Quesnel, British Columbia, Canada
I got ‘How to Paint a Car – The System’ to update myself on the new clear coat paint. I did some painting years ago and I am at intermediate level. The course was a lot of help to me. I benefitted by seeing how the new 2 step painting was done and done right. I have painted a Harley motor cycle and it came out good, and a car hood and it looked new. Thank you for the help. Ken Windsor, CA. USA.
For more glowing testimonials please visit our testimonials page.