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Item # 50776ZP BRAND: US Chemical

USC High Build Primer/Surfacer Gallon

Highly durable primer/surfacer for fiberglass, aluminum, prepped steel
Highly durable primer/surfacer for fiberglass, aluminum, prepped steel
USC High Build Primer/Surfacer Gallon is rated 4.9 out of 5 by 12.
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$92.99
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Highly durable primer/surfacer for fiberglass, aluminum, prepped steel

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USC High Build Primer/Surfacer Gallon
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Product Overview:

Description

USC High-Build Primer/Surfacer is as tough and durable as they come

Premium high-build polyester formulation is a highly durable primer/surfacer you can use on fiberglass, aluminum and properly prepared steel.

  • Excellent adhesion
  • Very high fill
  • Superior solvent resistance
  • Fast dry to sand
  • Sprayable

Premium high build formulation is a polyester primer-surfacer which can be used on fiberglass, aluminum and properly prepared steel. Eliminator HB has excellent adhesion, very high fill and superior solvent resistance when properly cured. On fiberglass it replaces damaged gel coat. This tough and durable coating resists stone chipping and abrasion and will fill 36 grit grinder marks in 2 to 3 coats. Cured primer in non-shrinking and compatible all automotive topcoats and meets all VOC regulations. 1 gallon includes 4oz liquid hardener.

In the Box

Contents

1-gallon can, with 4-oz. liquid hardener

Guides & Accessories

Reviews

Rated 5 out of 5 by from High Build Polyester Primer Polyester primer is the king. Easy to sand. You can get after it pretty hard without burn through. The best part is it does no shrink and crack like traditional high build primer. This is all I use now.
Date published: 2021-08-17
Rated 5 out of 5 by from High build Work very well applied three or four coats. I made a perfect surface for block sanding out minor imperfections to prep for paint
Date published: 2021-07-28
Rated 5 out of 5 by from Good stuff. Amatuer here. I have tried a few different types of high build primer. This stuff is as good or better than the high priced brands. It is now my go to HB Primer.
Date published: 2020-05-27
Rated 5 out of 5 by from Great product you must use acetone to clean gun. You can get a reall good gun off amazon for about $50 "TCP Global Brand Professional New 2.5mm Hvlp Spray Gun". It will lay this stuff on perfect! I cant say enough good things about this primer!
Date published: 2020-03-14
Rated 5 out of 5 by from High build I bought it a couple months ago and love it. It is definitely high build and fast drying! It easy to sand too. 5 star for sure!
Date published: 2019-06-21
Rated 5 out of 5 by from The best polyester primer I have ever used! I have been using this primer for five years now and it is by far my favorite. I have used at least four other brands and felt this was superior, especially for the price. This primer is touted as a direct to metal primer and acts as a sealer as well once it has been catalyzed. It saves many steps.
Date published: 2019-02-12
Rated 5 out of 5 by from my fav primer been shooting this sheit thru a 1.8 for 10years, back when it was made by mortons, now usc. iv shot over a half dozen filler types, bare steel, fiberglass, wood, & even abs plastic with no adhesion promoter & it sticks like glue to everything. not great shelf life as itll separate in can n be like hard playdough in a bucket of grey water. still da sheit tho
Date published: 2018-09-16
Rated 5 out of 5 by from Work saver This is great stuff. Very easy to apply and easily sanded. This covers extremely well and is absolutely High Build. This does go on a bit thick so you have to use the right tip but I love this stuff and you cant beat the price. The mix is simple and fast. I will be using this from now on. This layed down very nicely and reduced sanding.
Date published: 2015-12-21
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Questions & Answers

I've ordered this from you guys and another company each time I received message damaged and returned this happened between the two companies 5 times it was damaged now either this product doesn't exist orwhy is it only me that can't get the product.

Asked by: Llwrace
It is available ITEM # 50776ZP BRAND: US CHEMICAL USC High Build Primer/Surfacer Gallon Highly durable primer/surfacer for fiberglass, aluminum, prepped steel
Answered by: GeneB
Date published: 2023-09-20

I mixed up 16 oz., used a drill to mix well, new gun with 2.0 tip. Material sprayed fine but went on thick & speckled with tiny gobs (like sand) all over the panel, why? It sanded out fine. Can this be reduced to spray lighter as a final primer coat?

Asked by: rick
Look at the SDS to find a coating’s solvent. This one uses acetone, and I reduced it about 10% by vol with great results using PPG Acetone, not sure if USC has their own acetone but straight solvents like that isn’t usually a big deal going between brands. 
Answered by: ChemicalNgineer
Date published: 2023-03-23

What size spray tip works best with this primer?

Asked by: Wobwob
Ideally, a 2.0mm or larger will be your best option.
Answered by: Kelly H
Date published: 2022-08-10

This only comes in light gray, I want a dark base for my base color coat. What's the easiest way to go over this to give me a dark gray base? Would dark gray lacquer primer be acceptable as just I happen to have a gallon sitting around?

Asked by: rick
A reaction would most likely occur.
Answered by: Kelly H
Date published: 2021-12-17

Can this product be used on wood surfaces? 

Asked by: MeganF
We strictly test for automotive use only; not on wood. We apologize for the confusion.
Answered by: Kelly H
Date published: 2021-12-10

Can this be sprayed on top of rattle can primer?

Asked by: Aaron
We can not guarantee compatibility with anything we do not sell. You would have to test a small area first.
Answered by: Kelly H
Date published: 2021-07-16

What is the best method to measure out the catalyst in 1/2 or 1 ounce portions?

Asked by: Emargerum
I looked up on the internet figures as to how many drops are in an ounce, etc. As it works out, about 9 drops of catalyst to the ounce of material (closer to 9.25 actually, just get as close as you can). I've been using this method for mixing up 4, 5, 10 ounce portions etc, at a time and it's been working great.
Answered by: rick
Date published: 2022-01-17

The description says this can be used on bare aluminum! Yet at least 2 people have specifically asked about that here, both answers were to always use epoxy primer on aluminum first. So, which is it, can you or can't you? Maybe some factual consistency?

Asked by: rick
USC High Build Primer/Surfacer(50776ZP) is a high quality Direct to Metal(DTM) Primer Surfacer that has excellent adhesion properties and will work very well on bare Aluminum when the surface is prepared and cleaned properly. Go to www.eastwood.com and type in 50776ZP on the search bar. There you will see the product and its description.
Answered by: vince
Date published: 2022-01-17
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USC High Build Primer/Surfacer Gallon
$92.99
In Stock