Paint/Body Corvette Materials, Techniques, and How To

Ppg vp2050

Thread Tools
 
Search this Thread
 
Old Apr 21, 2021 | 10:44 PM
  #1  
69L48Z27's Avatar
69L48Z27
Thread Starter
Racer
 
Joined: Mar 2017
Posts: 327
Likes: 95
From: York PA
Default Ppg vp2050

Has anyone used VP2050 over ‘raw’ fiberglass? I’m going to be starting a project on a 66 and I’ll be working the finish down, parts of the car a weathered down to the glass. Was thinking of using this as the first product and then it’s also high build.

Seems everyone here is torn between gel coat vs starting with epoxy vs slick sand. Product seems like a good compromise.

Let me know what your opinion is.

https://us.ppgrefinish.com/getattach...-8-13.pdf.aspx

TIA

Last edited by 69L48Z27; Apr 21, 2021 at 10:45 PM.
Reply
Old Apr 22, 2021 | 10:02 PM
  #2  
csherman's Avatar
csherman
Le Mans Master
Conversation Starter
Loved
Community Favorite
Top Answer: 5
 
Joined: Dec 2009
Posts: 5,514
Likes: 1,955
From: Plano IL
2026 Corvette of the Year Winner - Unmodified
2025 C1 of the Year - Unmodified Winner
2019 C1 of Year Finalist (stock)
2018 C1 of Year Finalist
Default

Question
What is the purpose of putting that down first ?
I wouldnt
I would do all my body work over raw fiberglass
then a good high quality polyester primer
block that
then a good high quality 2k urethane primer
block that
sealer
paint
This is the process I use - even on the worst fiberglass
Slick Sand is old school technology
Evercoat new(er) polyester is Optex™ Super Build 4:1 Polyester Primer Surfacer
I do not gel coat - alot of guys do - I dont
Reply
Old Apr 23, 2021 | 05:41 PM
  #3  
69L48Z27's Avatar
69L48Z27
Thread Starter
Racer
 
Joined: Mar 2017
Posts: 327
Likes: 95
From: York PA
Default

I get the part about the body work first but you don’t seal or epoxy before going to polyester?

The VP2050 is a DTM high build. I was thinking it would be a good sealer that incorporated high build. The tech sheet said it was good over fiberglass. Was just curious if anyone tried it.

Thanks
Reply
Old Apr 23, 2021 | 07:47 PM
  #4  
20mercury's Avatar
20mercury
Safety Car
15 Year Member
Liked
Loved
Community Favorite
 
Joined: May 2008
Posts: 3,753
Likes: 721
From: Lafayette Louisiana
Default My 2 cents;

No knowledge to answer your question:

However, here is how I am doing it on my 72 and shortly my 68

Automotive Refinishing | United States | Southern Polyurethanes

Excerpt
"For older corvettes such as early 70’s and older, 3 wet coats of epoxy will perform best. Any cleaning of the raw glass should be allowed to sit 24 hours or longer before applying the epoxy. Apply one wet coat of epoxy, let it sit 1-4 hours then spray a second coat. If a third coat is desired again wait 1-4 hours before applying the next coat"

from
web-back.pdf (filesusr.com)

One thing I have learned is each auto painter is passionate about the way it works for them. And so I concluded there must be a number of ways that you can successfully paint a Corvette. Hope this helps.
Reply
Old Apr 23, 2021 | 08:54 PM
  #5  
69L48Z27's Avatar
69L48Z27
Thread Starter
Racer
 
Joined: Mar 2017
Posts: 327
Likes: 95
From: York PA
Default

Thanks. I am familiar with SPI. You are correct, lots of ways to do it.
Reply
Old Apr 24, 2021 | 09:29 AM
  #6  
csherman's Avatar
csherman
Le Mans Master
Conversation Starter
Loved
Community Favorite
Top Answer: 5
 
Joined: Dec 2009
Posts: 5,514
Likes: 1,955
From: Plano IL
2026 Corvette of the Year Winner - Unmodified
2025 C1 of the Year - Unmodified Winner
2019 C1 of Year Finalist (stock)
2018 C1 of Year Finalist
Default

Originally Posted by 69L48Z27
I get the part about the body work first but you don’t seal or epoxy before going to polyester?

The VP2050 is a DTM high build. I was thinking it would be a good sealer that incorporated high build. The tech sheet said it was good over fiberglass. Was just curious if anyone tried it.

Thanks
No
No need
You want your body filler on the raw fiberglass
Epoxy is great for bare metal - not needed for fiberglass - two different substrates
Do you body work right to the fiberglass - then polyester prime - block - 2k prime - block - sealer - paint
Think about it like a basement - you want to build a strong basement - you dont want anything to imped the strength

Last edited by csherman; Apr 24, 2021 at 09:50 AM.
Reply
Old Apr 24, 2021 | 07:10 PM
  #7  
69L48Z27's Avatar
69L48Z27
Thread Starter
Racer
 
Joined: Mar 2017
Posts: 327
Likes: 95
From: York PA
Default

Originally Posted by csherman
No
No need
You want your body filler on the raw fiberglass
Epoxy is great for bare metal - not needed for fiberglass - two different substrates
Do you body work right to the fiberglass - then polyester prime - block - 2k prime - block - sealer - paint
Think about it like a basement - you want to build a strong basement - you dont want anything to imped the strength
Thanks you. I’ve done paint and body but just not Corvette fiberglass. I was at Carlisle this week and I was really eyeballing some C2s and I consistently see these very small blisters or rough spots. Reminds me of solvent pop. What am I seeing? Is that basically some outgassing if they rushed the process? I just want to avoid that effect, I don’t want to learn later that something needed to go down between the fiberglass and high build.
Reply
Old Apr 25, 2021 | 01:08 PM
  #8  
Dave Tracy's Avatar
Dave Tracy
Melting Slicks
15 Year Member
Top Answer: 5
 
Joined: Aug 2006
Posts: 2,611
Likes: 378
From: Oceanside CA
Default

In reading the spec sheet, it said to not exceed 8 mils thickness after sanding. Depending on your prep, you may have issues with thickness with this material used alone.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-1

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-2

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-3

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
story-4

10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

 Joe Kucinski
story-5

How Much Horsepower Every Corvette Engine "LOST" in 1972

 Joe Kucinski
story-6

Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

 Michael S. Palmer
story-7

Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

 Joe Kucinski
story-8

150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

 Joe Kucinski
story-9

8 Coolest Corvette Pace Cars (and Replicas) of All Time

 Verdad Gallardo
Old Apr 29, 2021 | 08:34 AM
  #9  
csherman's Avatar
csherman
Le Mans Master
Conversation Starter
Loved
Community Favorite
Top Answer: 5
 
Joined: Dec 2009
Posts: 5,514
Likes: 1,955
From: Plano IL
2026 Corvette of the Year Winner - Unmodified
2025 C1 of the Year - Unmodified Winner
2019 C1 of Year Finalist (stock)
2018 C1 of Year Finalist
Default

Originally Posted by 69L48Z27
Thanks you. I’ve done paint and body but just not Corvette fiberglass. I was at Carlisle this week and I was really eyeballing some C2s and I consistently see these very small blisters or rough spots. Reminds me of solvent pop. What am I seeing? Is that basically some outgassing if they rushed the process? I just want to avoid that effect, I don’t want to learn later that something needed to go down between the fiberglass and high build.
Could be a bunch of things - yes rushing or solvent pop or outgassing. Corvettes are notorious for seeing the bond strips - it is the rate of strinkage of the glass. Good products and a good process and allowing your fillers and primers to shrink is key. I let my bodies sit in primer for months in the sun or a car trailer - get wide temp swings. Get all the shrinkage out.
Reply
Old May 19, 2023 | 11:43 PM
  #10  
TreDawg's Avatar
TreDawg
Intermediate
 
Joined: Jun 2015
Posts: 34
Likes: 1
From: Illinois
Default Sealer Clarification

Originally Posted by csherman
Question
What is the purpose of putting that down first ?
I wouldnt
I would do all my body work over raw fiberglass
then a good high quality polyester primer
block that
then a good high quality 2k urethane primer
block that
sealer
paint
This is the process I use - even on the worst fiberglass
Slick Sand is old school technology
Evercoat new(er) polyester is Optex™ Super Build 4:1 Polyester Primer Surfacer
I do not gel coat - alot of guys do - I dont
Hey, I'm bumping this message chain because I'd like to know exactly what kind of sealer you're referring to. Epoxy? Urethane? Thanks much!!
Reply
Old Jul 6, 2023 | 10:14 PM
  #11  
billberg's Avatar
billberg
Cruising
Liked
 
Joined: Oct 2017
Posts: 11
Likes: 1
Default

Thanks for the heads up on the Evercoat polyester Optex™ Super Build 4:1 Polyester Primer Surfacer. I've been wondering what the new tech replacement was for Slick Sand.
Reply

Get notified of new replies

To Ppg vp2050





All times are GMT -4. The time now is 10:58 PM.

story-0
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-1
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-2
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-3
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE
story-4
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years

Slideshow: 10 reasons why the C6 Z06 is still a performance benchmark after 20 years.

By Joe Kucinski | 2026-05-27 17:20:09


VIEW MORE
story-5
How Much Horsepower Every Corvette Engine "LOST" in 1972

Slideshow: How much horsepower every Corvette engine lost in 1972.

By Joe Kucinski | 2026-05-27 16:54:53


VIEW MORE
story-6
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!

Slideshow: How to Protect A Convertible Top: 10 DOs & DON'Ts

By Michael S. Palmer | 2026-04-03 00:00:00


VIEW MORE
story-7
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-8
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-9
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE