White Hardtop Bleeding Through

[mopar_nut_440_6]

Hello,

A friend has a white hardtop on his car and I was noticing that it appears to have dark areas in the top when looking at it in the right light. I asked him about this and he stated the fellow he bought it off of had a top installed and it came out with dark areas so he took it back and had them redo it. He was told it was due to the glue they used. Well this top also has spots but he "apparently" changed the adhesive. Anybody know if this is actually caused by the adhesive bleeding through? I could see a shop making the mistake once but twice??? Seems odd!

[Back N Black]

When my car was painted last year, the bodyshop did not paint the roof because they said that the adhesive would cause the paint to break down,bubble and leak through the vinyl top.So they left the roof in primer and installed the top, no problems so far.Not sure what type of primer was left on the roof. 

[mopar_nut_440_6]

When my car was painted last year, the bodyshop did not paint the roof because they said that the adhesive would cause the paint to break down,bubble and leak through the vinyl top.So they left the roof in primer and installed the top, no problems so far.Not sure what type of primer was left on the roof. 

Hmmm... I am getting ready to paint my car soon and it will also have a vinyl top. I was planning on spraying the whole car to have an extra layer of protection. Maybe I shouldn't?? I know that when you do not paint the entire roof you still need to spray into the sail panels for coverage of the top of the 1/4's and dutch panel.

Any experts care to chime in before I paint??? Also while on this thread, any recommendations for the best adhesive to use??

[Back N Black]

They just masked it off and painted.

[Charger-Bodie]

They just masked it off and painted.

I can honestly say that I dont quite buy that! Ive put on many vinyl tops and never had one bleed and theve all been Painted roofs.

I think the key to the bleeding is the fact thae the glue is just way too heavy in some areas. It is absoluely key to have the glue nice and even on both surfaces when dealing with a top. Most of these shops dont deal with the thin backed material like our tops are made from. The thin backed tops are NOT very forgiving.


P.S. Primer surfacer loves to wick moisture so without paint on your top I would let it get wet too often. Cause it will be far more likely to rust 'cause of that.

[TUFCAT]

The factory painted the entire roof before the vinyl top went on.

[69*F5*SE]

I'd tell them I want the top painted.   

[Ghoste]

The factory painted the entire roof before the vinyl top went on.

Are you sure about that?

[1970Moparmann]

The factory painted the entire roof before the vinyl top went on.

Are you sure about that?

This is true on my 68.  When I took off the top, the original paint was under it......



Look at this article by Mopar Muscle.

http://www.moparmusclemagazine.com/techarticles/body/mopp_0812_vinyl_top_installation/photo_09.html

[Ghoste]

Interesting.  I had always been told they didn't paint the roof but it's pretty hard to argue with that pic isn't it.

[oestermarken]

P.S. Primer surfacer loves to wick moisture so without paint on your top I would let it get wet too often. Cause it will be far more likely to rust 'cause of that.

Some areas of my roof was repaired with filler and primer only, it was very rusty underneath.
The rest of the roof was in original paint and was just fine underneath.

The car is at the paint shop now for a roof paint, and it's done same way as I will have the rest of the car done

/Brian

[Charger-Bodie]

The factory painted the entire roof before the vinyl top went on.

Are you sure about that?

They were not painted great.....some better than others.But , none of them would of had primer surfacer exposed, primer sealer maybe ,but not surfacer. The problem with primer surfacer is the talk and other filling products, they will soak up mousture.

[1970Moparmann]

I know this happened to a friend on a car he was restoring a couple of years ago.  I'll ask him to see what he came up with.

[62dodge]

My body guy uses left over paint and lays it on thick so that it will not rust under the vinyl top. I asked him about that when I went over to check on my `cuda and saw that the roof was blue and not red like the rest of the car .

[TUFCAT]

Okay, I should say (in theory) that was the case.

The roof was supposed to be painted....but very possible the workers did a half-ass lazy job and shot a misting, or nothing at all on some cars. 

It was done to prevent rust under the vinyl.

[mopar_nut_440_6]

I had planned on painting the roof and will as I do not want to take any chances of rust. My roof was painted from the factory and I had only a few extremely minor areas of rust pitting and this is on a northern British Columbia car which required extensive panel replacement on the rest of the body.

[superbirdtom]

They just masked it off and painted.

I can honestly say that I dont quite buy that! Ive put on many vinyl tops and never had one bleed and theve all been Painted roofs.

I think the key to the bleeding is the fact thae the glue is just way too heavy in some areas. It is absoluely key to have the glue nice and even on both surfaces when dealing with a top. Most of these shops dont deal with the thin backed material like our tops are made from. The thin backed tops are NOT very forgiving.



YOU ARE EXACTLY RIGHT ,THE SHOP PUT THE GLUE ON TOO HEAVY IN AREAS. THE GLUE SHOULD ALWAYS BE SPRAYED ON .ILL BET THEY GLOBBED IT ON WITH BRUSHES.  ALL YOU NEED TO DO IS SPRAY IT ON THE ROOF AND THE VINYL TOP AND WAIT FOR THE GLUE SOLVENT TO EVAPORATE BEFORE MASSAGING IT INTO PLACE. I ALWAYS USE TWO PEOPLE. I WOULD TAKE IT BACK AND DEMAND THEY PAY FOR A WHOLE NEW JOB.


P.S. Primer surfacer loves to wick moisture so without paint on your top I would let it get wet too often. Cause it will be far more likely to rust 'cause of that.