Primer differences

Discussion in 'Cosmetic' started by blugene, Mar 12, 2009.

  1. blugene

    blugene Senior member Supporting Member

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    What are the differences in epoxy and urethane primers? What are the deciding factors in choosing one over the other?
     
    blugene, Mar 12, 2009
    #1
  2. 71gold

    71gold Frank Cooper Supporting Member

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    one is a lot better than the other one...
    i use...epoxy...
    it is hard enough to be polished out to slick and shiny.. :yup:...the other is easier to sand but will rust through if exposed to damp conditions.

    in this pic.,this epoxy has been on for about 4 years...rubbed to a shine with a 3000 grit sanding pad.

    ...GFF...:Handshake
     
    Last edited: Apr 4, 2010
    71gold, Mar 12, 2009
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  3. blugene

    blugene Senior member Supporting Member

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    Thanks :).
     
    blugene, Mar 12, 2009
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  4. Joe Dirt

    Joe Dirt BBF life

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    My truck is done in a urethane and will also polish out shiny dries hard as a rock.Its sits outside 24/7 no problems with rust through
     
    Last edited: Mar 12, 2009
    Joe Dirt, Mar 12, 2009
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  5. PINKY

    PINKY .....John Ford.....

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    I used urethane primer when I painted the yellow car.
    I really liked it, but I am no expert.
     
    Last edited: Mar 14, 2009
    PINKY, Mar 12, 2009
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  6. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    You dont...These guys are just playing with there primer till they actually paint their cars.Ideally you only want to scuff the stuff with 320 to 400 grit before painting...the primer has to have some tooth(roughness) so the top coat will stick to it.These guys will scuff it up before actually painting at the least (I hope).
     
    Mavman72, Mar 12, 2009
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  7. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    Yes...When and where they have too.
     
    Mavman72, Mar 12, 2009
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  8. Mavman72

    Mavman72 Gone backwards but lookin' forward

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    LOL...your funny...:biglaugh:but seriously...they dont use more than they have to in most collision shops...Restoration shops though...they use LOTS of it.
     
    Mavman72, Mar 12, 2009
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  9. Mike Tucker

    Mike Tucker Member

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    Epoxy is used on bare metal. Urethane is used over epoxy. If your car isn't bare metal use a good urethane primer like PPG K36. I like PPG NCP 271 high build epoxy as it is a direct to metal primer or over cured paint. It is all I use.It is expensive at $270 a gallon and $85 for a quart of hardener.You can tint it as well with what ever colour your car is.Urethane will not stick to bare metal. Price wise urethane is cheaper than epoxy
     
    Mike Tucker, Mar 12, 2009
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  10. Dave B

    Dave B I like Mavericks!

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    Are those Canadian prices?? :rofl2:
     
    Dave B, Mar 12, 2009
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