under bra haze/discoloration

C

CMS

New member
hi guys,



i am new here. i'm hoping that the collective wisdom of this forum can help me with my immediate problem as well as help me become a better detailer.



my immediate problem is that i was given a 'hood-bra' (the bra covers the front 12" section of the hood) that was never used/brand-new. it is a Porsche product.



i put it on for about a week and when i removed it, the area covered by the bra was completely discolored/hazed/much lighter than it should be.



i tried taking this haze out with Sonus #1 and Sonus' yellow hi-cut pad to no avail. then i moved on to 3M rubbing compound with the yellow pad and that didn't work either. i really need a solution short of a re-spray.



i have read some other posts that said that leaving it in the sun cured the haze, but mine has been in the sun for 2 weeks now and the haze/discoloration is still there.



believe me, i will never use a bra again. (well, maybe a clear bra).



here are some pics of the damage.



13577_Chris_in_NH_Boxster_Pics.jpg




13576_Chris_in_NH_Boxster_Pics.jpg
 
bump. ;)



can someone help me with this? there must be a solution short of repainting. (i hope).
 
CMS said:
bump. ;)



can someone help me with this? there must be a solution short of repainting. (i hope).
Click to expand...



I had that happen to me as well and the only solution was to have it re-sprayed. The clear coat picks up moisture that stays trapped in.
 
That's happened to my car but it is because i removed too much Clear Coat. i guess..Also SFX-1is an aggressive polish and it could create haze....try a less aggressive polish, but i don't think that it will be OK.with the clear bra was looking OK or not??

Maybe they polish it too much before they install the clear bra....
 
pampos said:
That's happened to my car but it is because i removed too much Clear Coat. i guess..Also SFX-1is an aggressive polish and it could create haze....try a less aggressive polish, but i don't think that it will be OK.with the clear bra was looking OK or not??

Maybe they polish it too much before they install the clear bra....
Click to expand...



Pampos, this wasn't from a *clear* bra, but from an old school type black pleather bra.



It looks like the backing on the underside of the bra (the cotton like material) got soaked with water and was left against the paint for an extended period of time. That's most likely what's caused your hazing. Leaving it in the sun will sometimes fix this; it depends on how long it was exposed to the water, and what type of clear coat it has.



The other cause of bra-induced haze is mechanical action hazing similar to the type of haze you get from compounding. This type of haze is usually less uniform than water damage, as it only occurs in places where the bra actually moves on the paint. Mechanical action hazing can usually be fixed with a few passes of the rotary and a medium polish.



At this point, I'd consider doing a few passes with a rotary and a medium polish. Follow that up with a *very* thorough washing, then follow *that* up with a very thorough prep-sol wipedown, followed by an IPA wipedown. You want to get *everything* off of the clear that you can to try and allow it to dry out. Give it at least a month in the hotest sun you can find.



Honestly, I think you're looking at a repaint, but it's at least worth *trying* to fix it first.
 
old school bras are the biggest oxy-morons EVER.... they look terrible, AND don't protect the paint. Heh.



At any rate, my guess is that the bra was rubbing on the paint as it moved around in the wind etc, and possibly wore down through the clear.



Have any access to a paint thickness gauge?
 
SuperBee364 said:
Pampos, this wasn't from a *clear* bra, but from an old school type black pleather bra.



It looks like the backing on the underside of the bra (the cotton like material) got soaked with water and was left against the paint for an extended period of time. That's most likely what's caused your hazing. Leaving it in the sun will sometimes fix this; it depends on how long it was exposed to the water, and what type of clear coat it has.



The other cause of bra-induced haze is mechanical action hazing similar to the type of haze you get from compounding. This type of haze is usually less uniform than water damage, as it only occurs in places where the bra actually moves on the paint. Mechanical action hazing can usually be fixed with a few passes of the rotary and a medium polish.



At this point, I'd consider doing a few passes with a rotary and a medium polish. Follow that up with a *very* thorough washing, then follow *that* up with a very thorough prep-sol wipedown, followed by an IPA wipedown. You want to get *everything* off of the clear that you can to try and allow it to dry out. Give it at least a month in the hotest sun you can find.



Honestly, I think you're looking at a repaint, but it's at least worth *trying* to fix it first.
Click to expand...



SuperBee364 is correct. this was from an old-skool bra. it was given to me for free and was never used by the previous owner (he doesn't know how lucky he was!). i only had it on for a week or two, but it did rain a couple times during the 1-2 week period. i had never used a bra before, but since it was free i figured i would try it for a little while. BIG mistake. :hairpull



i'll give the rotary a 'whirl' (sorry, bad detailing pun) to see what happens. the car is a '97 (11 years old) and has 137K miles on it and (most of) the paint is original. there are plenty of rock chips from all those miles and the hood was due for a repaint, anyway. i just wanted to see if i could put it off and get the whole car painted at once. at this point, if the rotary doesn't work, i might just put the bra back on until i get it repainted. the hood looks like total crap the way it is now.



the paints/clearcoats that Porsche uses are Spies-Hecker, PPG and Glasurit. German paints are pretty hard from what i understand. i don't know if that's good or bad in my situation.



thanks to everyone else, too, for their input. any more ideas/advice, keep it comin'!



/chris
 
Lumadar said:
old school bras are the biggest oxy-morons EVER.... they look terrible, AND don't protect the paint. Heh.



At any rate, my guess is that the bra was rubbing on the paint as it moved around in the wind etc, and possibly wore down through the clear.



Have any access to a paint thickness gauge?
Click to expand...



yep. you're 100% correct.



i've never liked bras (both kinds :D), but someone was giving this one away and i was *lucky* enough to respond first, so i got it. i figured i'd give it a try and if i didn't like it i could always give it to someone else/put it on eBay, etc.



i only had it on for a short while (1 to 2 weeks).



i don't have access to a paint thickness gauge at the moment, but i'm sure i know someone who does.



thanks.
 
You must log in or register to reply here.
Back
Top