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Paint bubbling / cracking, how do I repair?
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simonprosser
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Oct 1, 2012, 7:51 PM
Post #1 of 12
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Paint bubbling / cracking, how do I repair?
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Hi everyone,
I'm after some help with my car. On the roof the car seems to be cracking and detach from the roof. I would like to know how I can fix problem so that the problem doesn't get worse (so it's protected from rust etc), it doesn't need to look great but just be functional. Details:
- No water is leaking to the inside of the car.
- There is rust on the metal under the paint.
- I just bought the car so I don't know how the problem started.
- I've been to an auto shop here in Japan but was told that it couldn't be fixed with paint/primer, but I'm not really sure on that as there was a lot of communication difficulties.
- As you can see from the close up pic the paint seems quite thick, is it only paint?
Photos:
http://members.iinet.net.au/~smp/daihatsu_wave/big_crack.JPG
http://members.iinet.net.au/~smp/daihatsu_wave/big_crack2.JPG
http://members.iinet.net.au/~smp/daihatsu_wave/big_crack3.JPG
http://members.iinet.net.au/~smp/daihatsu_wave/big_crack4.JPG
http://members.iinet.net.au/~smp/daihatsu_wave/small_crack.JPG
If it will help I can take some more photos. Please help me fix the roof!
Thanks in advance!
Year of vehicle: 1997
Make of vehicle: Daihastu
Model of vehicle: Move (Japanese car)
Engine size: 660cc
Mileage/Kilometers: 105,000kms
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Hammer Time
Ultimate Carjunky
/ Moderator
Oct 2, 2012, 3:20 AM
Post #2 of 12
(11537 views)
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Re: Paint bubbling / cracking, how do I repair?
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WOW! You have a serious issue there.
It looks to me that someone previously did some very poor body work and there is a layer of body filler there that water was able to get under and rusted the metal between the filler and the roof. That is going to be very expensive to fix. All that filler has to be stripped off and the metal treated to remove all the rust before refilling and painting it. Probably not worth the cost.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
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Oct 2, 2012, 4:00 AM
Post #3 of 12
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Re: Paint bubbling / cracking, how do I repair?
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Rust (oxidation) has to be killed or 100% removed or will come back. Trapped under paint or anything it will just push it off. Trouble is completely replacing metal is frequently cost prohibitive.
Best of products just slow it down. Scary example of a famous paint made to stop rust.................
T
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Discretesignals
Ultimate Carjunky
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Oct 2, 2012, 5:01 AM
Post #4 of 12
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Re: Paint bubbling / cracking, how do I repair?
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Damn cheese cake factory did that repair.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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simonprosser
New User
Oct 2, 2012, 6:30 AM
Post #5 of 12
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Re: Paint bubbling / cracking, how do I repair?
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Hey guys,
Thanks for the information. I have some more questions...
- What is the body filler (the purpose)? (I've done some googling and don't really understand it)
- Is it possible to fix by yourself?
- Is there anything I can do to slow it down? I was thinking put some gaffa tape over to keep the water out, or possibly stripping it all off past the problem area and seal it with something strong.
- If left untreated how bad can it get in how long?
- You mention very expensive, roughly how much are we talking about?
I really would like to know how I am able to do something about this myself in slow it down or stop it.
Cheers.
(This post was edited by simonprosser on Oct 2, 2012, 6:37 AM)
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Hammer Time
Ultimate Carjunky
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Oct 2, 2012, 7:41 AM
Post #6 of 12
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Re: Paint bubbling / cracking, how do I repair?
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It's a putty that hardens that is used to repair dents and get a smooth finish again after sanding it. Inexperienced people over use it. I think the 3 stooges did that one.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Discretesignals
Ultimate Carjunky
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Oct 2, 2012, 8:18 AM
Post #7 of 12
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Re: Paint bubbling / cracking, how do I repair?
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Your just seeing the outside. What is going on inside is going to determine if you can neutralize the oxidation or if you have to cut out the rust and add patch paneling.
If let untreated, the rust will eventually eat out the rest of the sheet metal and you'll have a sun roof. You'll probably have to remove the headliner and see how bad the rust is on the other side.
Since we volunteer our time and knowledge, we ask for you to please follow up when a problem is resolved.
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simonprosser
New User
Oct 3, 2012, 1:33 AM
Post #8 of 12
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Re: Paint bubbling / cracking, how do I repair?
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ok so I think I understand the problem a little better now. They used the filler to fix a dent but didn't do it properly and the russt is slowing moving out from the point they didn't fix?. To fix I first need to remove the headliner and check if it's gone through. If it has I need to get a panel and patch it (get it welded?) and if not I should be able to sand all thee paint off and prime and then paint it? (this will leave the original dent they tried to fix though?).
Is this correct? Sorry for all the questions but I'd reallly like to solve this problem and if not at least apply a quick fix to slow it down. We leave for a 3 week road trip tomorrow so wont be able to fix it until we get back, so if there's something simple like covering with tape to keep excess rain out (or another temp solution) then I'd really like to know about it!
thanks for all your help so far guys....
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Hammer Time
Ultimate Carjunky
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Oct 3, 2012, 3:13 AM
Post #9 of 12
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Re: Paint bubbling / cracking, how do I repair?
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There is nothing simple about this at all. It is a major repair to start with if they hadn't touched it but now cleaning up everything they did will make this a large undertaking and not something for a DIYer.
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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Tom Greenleaf
Ultimate Carjunky
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Oct 3, 2012, 4:29 AM
Post #10 of 12
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Re: Paint bubbling / cracking, how do I repair?
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I just couldn't get the original pics to show but clearly get the idea of what has happened. How roof was damaged isn't the point right now but the lousy repair or attempt just made it harder and would have been difficult if only some hail damage.
In my attempt to see what this vehicle should look like came up with this...........
NOT my trade but I dare say we all have worked with the trade or had things repaired ourselves for our own. That and combination work like body shop does their part, mechanical items go to mechanical shops and so on. That or vehicles are "salvaged" for parts that are still good for use on another!
Roof near always isn't just to keep the rain out. It is part of the strength of the vehicle as a unit. Just filling in cosmetic flaws even those that remain from proper repair should be just for final finish to look its best. If unseen supports are damaged the strength is compromised.
The original proper fix would probably have been a whole roof exceeding the value of the vehicle. That is a high difficulty job for the shops that do this to make every seam be strong and in position.
IMO if you are planning on a long future you not only need an auto body shop but one that is real good at this type work. It probably isn't just the rust you see now or filler being rejected but in need of very extensive work to make it sound never mind look well again.
Late now but when buying a used vehicle have them checked out before the purchase professionally so you can decide on buying that one or looking for another based on what is found in need with an idea of how much to make it right. Even then surprises can and will come up,
T
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simonprosser
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Oct 3, 2012, 2:55 PM
Post #11 of 12
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Re: Paint bubbling / cracking, how do I repair?
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Thanks Tom,
That's the car. So fixing it is out of the question, we would be happy to spend up to 1000 but no more, I guess we should get some quotes. We are leaving for a road trip today, do you guys know of anything that might slow down the speed that it will oxidise? possibly to cover it so less water will get in?
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Hammer Time
Ultimate Carjunky
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Oct 3, 2012, 4:59 PM
Post #12 of 12
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Re: Paint bubbling / cracking, how do I repair?
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You should be able to get that resolved for well under $1,000
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We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.
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