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Hello my fellow Smartiez!

I own a 2009 Passion and the hard top has plenty of oxidation. California sun is hard on cars and also, my bad for letting it go this long :( I've attached a photo for better understanding of what it's become. Can anyone tell me what method would be best of getting rid of the oxidation. Hopefully a good of the shelf product and pad will do the job. If I am able to remove the oxidation, how can I protect it so this doesn't happen again. Any advice is appreciated!

Thank you! :)
 

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...I will try a jitterbug type sander and some 400 or 600 sand paper to begin with and work my way up to 800-1200-1500-2000 grit sand paper and plenty of water...and finish it off with some plastic cleaner/ polisher...

Jetfuel....nothing to loose...
Nothing to lose... nice! :D
 

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A part of me wants to do what godfather did and install an opening sunroof into the pano roof...That would be a cherished addition! However, he hasn't been around lately so no idea on the longevity of that. After all, glass window mounted onto flexible (and faulty) polycarbonate. I can only imagine that cutting the roof will only accelerate the crazing process.
 
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If you want a clear roof, then your choices are to try and refinish it, which probably won't give you a crystal clear roof , or replace it. If you just want it to look good and don't care about being able to see through it, wrap it. I redid the wrap on my pure (with the solid roof) and it turned out great. I even used a carbon fiber finish and it glistened in the sunshine!

Not too sure painting it will hold up too well on a roof with that much oxidation.
 

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If you want a clear roof, then your choices are to try and refinish it, which probably won't give you a crystal clear roof , or replace it. If you just want it to look good and don't care about being able to see through it, wrap it. I redid the wrap on my pure (with the solid roof) and it turned out great. I even used a carbon fiber finish and it glistened in the sunshine!

Not too sure painting it will hold up too well on a roof with that much oxidation.
My 2009 Passion has some of the same deterioration, but not as bad as the above photo. Mine is mostly confined to the rear 8" of the roof. It looks like a thin top layer has been peeling away. I tried some plastic polish but it had little effect. I have the crazing as well. :(

Is the roof tint within the plastic or a coating on the top surface? I have a couple of what appear to be scratches of the tint, only really visible from the inside looking out.

I'm thinking of putting the perforated wrap material on the roof. A white wrap on a white car could totally transform the appearance. This would hopefully protect the roof from further damage, while still maintaining some visibility through it. I'd expect it to reduce the amount of summer heat gain also.

What sort of prep would the roof require for a wrap... sanding and polishing, or just a good cleaning?

~toaster
 

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I had mine replaced at the dealer. Makes it look and feel like a new car. I had spoken with the manager of a wrap shop, he didn't want to do the job. Some of the deterioration would be visible "between the dots", and he didn't think I would be happy with the reduced amount of light coming through the top. I decided he was right. Spending $1,000 and change at the dealer for the new panoramic roof stung a bit, since my car is an '09, but it has low miles and I have made it just the way I want it, mostly through advice gleaned from this forum, I decided to go for it.
 

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As far as I know, the tinting on these roofs aren't a film, but rather the roof itself is formulated partially tinted.

Mine has been a late bloomer. It didn't start crazing until 46k miles, didn't get noticeable until long after the warranty ended, and as of now is not delaminating on the outside.

The crazing on the inside looks intense nowadays with the roof losing more clarity on a monthly basis.

I bet I could improve godfather's mod by using a Dremel... though I'm too scared to even consider cutting that roof. It may be ugly but it still works as a roof.
 
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If you can Diy and replace the roof, I believe autobahnsmart sells part out replacement hard top roofs at a good price.

I have read that ammonia in car wash and cleaning products is a no-go, can lead to delamination.

Sent from Tapatalk on Android
 

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Hello my fellow Smartiez!

I own a 2009 Passion and the hard top has plenty of oxidation. California sun is hard on cars and also, my bad for letting it go this long
I've attached a photo for better understanding of what it's become. Can anyone tell me what method would be best of getting rid of the oxidation. Hopefully a good of the shelf product and pad will do the job. If I am able to remove the oxidation, how can I protect it so this doesn't happen again. Any advice is appreciated!

Thank you!

I had an 09 with the same problem, looked very similar to yours. I cleaned the top, removed any flaking pieces and then coated it with wipe new. It's that stuff you see on tv, I found it at Walmart in a yellow box. Worked pretty well, the top shined up nicely. Had to do that a few times a year to maintain the shine. Man did it look good when it was fresh! Hope this helps!
 

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I bought the panoramic roof from "part my ride" and then removed my solid and installed the pano myself. Both roofs were 2011's. Since my replacement roof was from a wrecked car it had a couple of scratches on the front from the outside from front edge above the dome light area, but the scratch still looked tinted, so the tint must be down in the layers. I kept my old solid roof in the shipping package from the pano roof and couldn't even give it away because shipping to get it was too high. So I ended up putting it out for the sanitation men to carry it away.
But to build the scratches back up to level again I bought a couple magic marker from Simoniz on Ebay.

2PCS Fix It Pro Simoniz Car Scratch Repair Remover Pen Clear Coat Applicator | eBay

It's probably not practical to try and use it over an entire roof because it takes a few coats to build it up, and the markers wouldn't last that long Then let it set out in the sun and it cures hard and shiny, at least for small repairs. DCO
 

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Hi Smartiez,

I had the same problem. Searched forums but didn't found solution other than buy a new roof. My smart fortwo is from 2008, didn't want to spend a lot of money.

It is a clearcoat peeling problem. I tried to repair it myself, turned out great. Isn't perfect, I can spot imperfections, but I was not expecting 100% perfection. Car seems new again. I attached before and after photos. In the after photos, the white of the roof is roof reflecting the clouds.




 

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Smart fortwo roof repair

Of course, I usually visit this forum but never registered until now. Sorry my english.

Basically what I used:

1500P Wetsand paper (with a pad)
Spray Max 2K clearcoat (1 can, must be 2K, regular clearcoat can not handle environment to which the car is exposed)
3M mask respirator (mandatory - 2K clearcoat is dangerous, cancer alert)
Garage (for painting without debris sticking to roof)

Secondary stuff:
3M blue scotch masking tape
Fiber towels
Alcohol (prefer Isopropyl alcohol)
Dishwasher detergent
Plastic bags (for covering)
Water sprinkler

1 - Went to a pressure washer and cleaned the roof, trying to remove flaking clearcoat the maximum as possible
2 - Washed the roof with dishwasher to remove any grease
3 - After drying, mask the tridion cell/window with blue scotch masking tape
4 - While using water sprinkler, hand sanding the clearcoat with the 1500P wetsand paper


You will notice clearcoat debris on the water. I expected removing clearcoat and begin to see paint. As Miss Mercedes said, seems that the tinting on these roofs aren't a film, but rather the roof itself is formulated partially tinted. If I knew that, I sanded some spots with P1000 and P1500 after for a perfect job.
5 - Clean surface very well and let it dry.
6 - Mask every inch of your car, i mean every inch! This 2k clearcoat is powerful. I notice one bit of a panel with plastic covering but not making contact with, and clearcoat particles got underneath the plastic.

7 - Spray it with 2K clearcoat. I did 2 coats. Paint lines overlapping 50% of the previous line. Always begin spraying outside of the panel. For this I recommend seeing this youtube videos youtu.be/7AJ1JVl7yTY?t=18m30s youtu.be/lbSIjsUeWZQ and youtu.be/M_v8qPqPmr0
8 - Let it dry minimum 1 day in garage. Don't put WAX nor polish in the next month, let the clearcoat cure.

FINISH


Imperfections.
At closer eye and with right angle you can spot a line of a previous clearcoat in front. If were today, I sanded this part first with P1000 then P1500
 

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I'm wondering if one of those headlamp plastic cleaners kits. Would work on the roofs, using a electric buffer. Really got nothin to loose trying.
The kits take the fog, out of headlamps. They come with a couple grades, of sandpaper, and plastic Polish.
 

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smark, I have the kits you said.

I don't recomend electric buffer for sanding for someone without experience. It is very easy to make a mistake. If you do it on one spot a little too much you can "melt" the plastic. Hand sand is easy and safe, simple more time.

I forgot to said, I did repair the headlights too, turn out great.

Hand wet sand it P800, P1000 and P1500 and clearcoated with 2K clearcoat. Unfortunately don't have a before photo.


There is the another method, sand P800, P1500, P3000 and polish with plastic polish. Then wax it every 6 months.
 
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