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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.
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
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.
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"
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.
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.
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.
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.
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.
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!!
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.