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Adding the 3M tape to roof edges

Scaliwag

Scaliwag

I was born under a wandering star.
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I have emails from VW that the Roof is covered under the 10 year corrosion warranty if anyone what’s a copy for a claim that VW try to dismiss
That’s gold dust, can you upload it into the upload section of this site??
I’d like to have a copy to my email please. My biggest worry with my T6 I’d the dreaded roof corrosion problem.
 
M

Mike Jenkins

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13
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That’s gold dust, can you upload it into the upload section of this site??
I’d like to have a copy to my email please. My biggest worry with my T6 I’d the dreaded roof corrosion problem.

And me please

Mike
 
Keith Smith

Keith Smith

Messages
546
Location
Shrewsbury
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T6 Ocean 150
Well, yesterday was warm and sunny, the tape had finally arrived from Viking and I had a free morning to have a go at fitting the tape. Naively I had thought I would have caught the problem in time but sadly not. Mine is a March 2016 by the way.

IMG_1095.JPG
This was the front nearside corner, looks bad but after cleaning and using Tcut the extent of the rust contamination was more clear.

IMG_1097.JPG

Also on the inside,

IMG_1098.JPG

But you can also see bubbling along the front edge. Unfortunately that wasn't the only place corrosion had occurred with each edge having some bubbling.

IMG_1099.JPG
This is the offside, small patch but destined for bigger things I suspect.
IMG_1101.JPG
Dead centre of the back edge.

There doesn't seem to be any logical reason why the corrosion has occurred where it has. If it was caused by the steel wire in the seal why then has it not bubbled up dramatically where the paint has become completely impregnated with rust at the front corner?

Anyway I couldn't face having the van shoddily repaired with a fix that would be temporary at best so I fitted the tape in the hope it will slow down the problem and in the belief that I could remove it should I need to make a claim. I had bought 3 rolls and it took two plus 450mm from the third to do the sides and back edges without stretching the tape.

I hadn't intended to do the front edge as access is awkward but having found corrosion at the corner I took the gamble and removed the remaining rubber seal. This is when I discovered the paint was literally bubbling up with seemingly no corrosion underneath.

IMG_1106.JPG

A neat series of bubbles!

Worst still I discovered that the top coat of paint will literally peel off quite easily and so now I suspect that it will be impossible to remove the tape without seriously damaging the paint. So in for a penny etc I applied tape to the front edge. Then used a judicious amount of silicon and profanity to get the seal back, I'd overlapped the front corners which made it very tight but the front edge was difficult to fit along its entire length for some reason. The rest went on comparatively easily, but you do need to use plenty of silicon.

So now I'm not sure if I've done the right thing. Only time will tell if the problem gets a lot worse and I've voided the warranty, but with a bit of luck this will hold the tide of corrosion back and I can enjoy the vehicle until I trade it in for an entirely plastic electric T12.
 
2into1

2into1

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If they claim you've voided the warranty, then you'll have this date stamped thread to demonstrate the problem was existing before your efforts to limit the damage further.
 
Scaliwag

Scaliwag

I was born under a wandering star.
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Messages
103
Location
Dublin
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T6 Ocean 204 4Motion
Well, yesterday was warm and sunny, the tape had finally arrived from Viking and I had a free morning to have a go at fitting the tape. Naively I had thought I would have caught the problem in time but sadly not. Mine is a March 2016 by the way.

View attachment 34035
This was the front nearside corner, looks bad but after cleaning and using Tcut the extent of the rust contamination was more clear.

View attachment 34036

Also on the inside,

View attachment 34037

But you can also see bubbling along the front edge. Unfortunately that wasn't the only place corrosion had occurred with each edge having some bubbling.

View attachment 34038
This is the offside, small patch but destined for bigger things I suspect.
View attachment 34039
Dead centre of the back edge.

There doesn't seem to be any logical reason why the corrosion has occurred where it has. If it was caused by the steel wire in the seal why then has it not bubbled up dramatically where the paint has become completely impregnated with rust at the front corner?

Anyway I couldn't face having the van shoddily repaired with a fix that would be temporary at best so I fitted the tape in the hope it will slow down the problem and in the belief that I could remove it should I need to make a claim. I had bought 3 rolls and it took two plus 450mm from the third to do the sides and back edges without stretching the tape.

I hadn't intended to do the front edge as access is awkward but having found corrosion at the corner I took the gamble and removed the remaining rubber seal. This is when I discovered the paint was literally bubbling up with seemingly no corrosion underneath.

View attachment 34040

A neat series of bubbles!

Worst still I discovered that the top coat of paint will literally peel off quite easily and so now I suspect that it will be impossible to remove the tape without seriously damaging the paint. So in for a penny etc I applied tape to the front edge. Then used a judicious amount of silicon and profanity to get the seal back, I'd overlapped the front corners which made it very tight but the front edge was difficult to fit along its entire length for some reason. The rest went on comparatively easily, but you do need to use plenty of silicon.

So now I'm not sure if I've done the right thing. Only time will tell if the problem gets a lot worse and I've voided the warranty, but with a bit of luck this will hold the tide of corrosion back and I can enjoy the vehicle until I trade it in for an entirely plastic electric T12.
Thanks for posting these. I'm really sorry for your discovery and I'm now very nervous about mine. I don't know if I should investigate it by removing some of the gasket or just leave it or contact my dealer and preempt this problem. March 16, way way too early to be having corrosion issues anywhere.
Of course the other conundrum is, that if the roof is to be replaced, how long will it take, how well will the job be done and how long will the replacement last without the same happening in another 2 years (or less).
This is very bad news for all Cali owners!
 
Loz

Loz

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Well, yesterday was warm and sunny, the tape had finally arrived from Viking and I had a free morning to have a go at fitting the tape. Naively I had thought I would have caught the problem in time but sadly not. Mine is a March 2016 by the way.

View attachment 34035
This was the front nearside corner, looks bad but after cleaning and using Tcut the extent of the rust contamination was more clear.

Bubbling aside, the rust has to be coming from the seal as the roof aluminium, so at the very least you need a new seal.
 
Ryemslie

Ryemslie

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Aberdeen
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T5 SE 140
Personally I’d take the tape off as I see no point in putting it on a roof where it’s already started & get it booked into a known reputable repairer. There’s plenty threads on here to give you that information. The longer it’s left like that the worse it can get & reporting the problem to actual repair can take several months if not years in some cases.
 
  • Agree
Reactions: Loz
Keith Smith

Keith Smith

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546
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Shrewsbury
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T6 Ocean 150
Personally I’d take the tape off as I see no point in putting it on a roof where it’s already started & get it booked into a known reputable repairer. There’s plenty threads on here to give you that information. The longer it’s left like that the worse it can get & reporting the problem to actual repair can take several months if not years in some cases.
I've been in touch with VW customer services today and had it logged as a fault. They want me to take it to the local dealer who is 50 miles away. I will take it next time I'm passing but I'm not making a special trip. As for repair, there are no repairers who can guarantee the problem won't bubble up again a couple of years down the line and so I've taken the decision not to have it temporarily fixed but to wait to see if they can come up with a permanent fix over the next few years. As I said previously the paint has barely adhered in some places so the option of removing the tape is not practical on my vehicle. The bottom line though is that although this is distressing it is only cosmetic and does not affect the overall use of the vehicle, so I intend to use it and not get embroiled in the nightmare that has often been the result of trying to get it patched up.
 
California Dreamin

California Dreamin

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I think you put that well Keith. It would be easy for us to forget the main thing getting out and enjoying life.

I think I will wait until shortly before the 3 year point to have it checked and then will get it repaired under warranty, and will at that point apply tape to get to a position equivalent to the current manufacturing process (although no as good i am sure). Although this will not remove the problem it should abate it for a decent period.

What I find hard to swallow is that VW have not offered the 6 years warranty like for the T5 so with an unchanged design, still flawed, we are in a worse position. Please chime in here if anyone one has had any assurance in writing that they will offer the equivalent to us T6 non-tapers.
 
Scaliwag

Scaliwag

I was born under a wandering star.
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Messages
103
Location
Dublin
Vehicle
T6 Ocean 204 4Motion
That’s gold dust, can you upload it into the upload section of this site??
I’d like to have a copy to my email please. My biggest worry with my T6 I’d the dreaded roof corrosion problem.
Hi there, is there any chance you can get these emails to me pls - declanmfoley@+++++.com
 
Jabberwocky

Jabberwocky

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I have emails from VW that the Roof is covered under the 10 year corrosion warranty if anyone what’s a copy for a claim that VW try to dismiss
Could you send me a copy of what is relevant? I looked in the download section but couldn't find it.
Thanks.
 
calikev

calikev

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Well, yesterday was warm and sunny, the tape had finally arrived from Viking and I had a free morning to have a go at fitting the tape. Naively I had thought I would have caught the problem in time but sadly not. Mine is a March 2016 by the way.

View attachment 34035
This was the front nearside corner, looks bad but after cleaning and using Tcut the extent of the rust contamination was more clear.

View attachment 34036

Also on the inside,

View attachment 34037

But you can also see bubbling along the front edge. Unfortunately that wasn't the only place corrosion had occurred with each edge having some bubbling.

View attachment 34038
This is the offside, small patch but destined for bigger things I suspect.
View attachment 34039
Dead centre of the back edge.

There doesn't seem to be any logical reason why the corrosion has occurred where it has. If it was caused by the steel wire in the seal why then has it not bubbled up dramatically where the paint has become completely impregnated with rust at the front corner?

Anyway I couldn't face having the van shoddily repaired with a fix that would be temporary at best so I fitted the tape in the hope it will slow down the problem and in the belief that I could remove it should I need to make a claim. I had bought 3 rolls and it took two plus 450mm from the third to do the sides and back edges without stretching the tape.

I hadn't intended to do the front edge as access is awkward but having found corrosion at the corner I took the gamble and removed the remaining rubber seal. This is when I discovered the paint was literally bubbling up with seemingly no corrosion underneath.

View attachment 34040

A neat series of bubbles!

Worst still I discovered that the top coat of paint will literally peel off quite easily and so now I suspect that it will be impossible to remove the tape without seriously damaging the paint. So in for a penny etc I applied tape to the front edge. Then used a judicious amount of silicon and profanity to get the seal back, I'd overlapped the front corners which made it very tight but the front edge was difficult to fit along its entire length for some reason. The rest went on comparatively easily, but you do need to use plenty of silicon.

So now I'm not sure if I've done the right thing. Only time will tell if the problem gets a lot worse and I've voided the warranty, but with a bit of luck this will hold the tide of corrosion back and I can enjoy the vehicle until I trade it in for an entirely plastic electric T12.
It’s not rust aluminium doesn’t rust what you can see is rust from the steel inside the seal
 
ArunAlec

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Could you send me a copy of what is relevant? I looked in the download section but couldn't find it.
Thanks.
I'd check the precise wording of any eMail from VW. From my understanding the 10/12 year only relates to holes in panels etc not surface corrosion, see below. References to THROUGH CORROSION and PERFORATION being the catch!

Body protection warranty
All current Volkswagen vehicles are fully protected during manufacture against through corrosion for 12 years from the date of first registration.

The only preconditions are:

  • The defect must be reported to a member of the Volkswagen Authorised Repairer network as soon as it is discovered and within the warranty period.
  • The perforation must not have been caused originally by damage, neglect, insufficient care or maintenance or by external corrosion (rusting).
  • A member of the Volkswagen Authorised Repairer network must be advised about any rusting as soon as it is found.
  • All body repairs will be carried out promptly in accordance with the manufacturer's specification and procedures, using only approved parts and materials, so the original level of anti-corrosion protection is maintained.
 
Jabberwocky

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I'd check the precise wording of any eMail from VW. From my understanding the 10/12 year only relates to holes in panels etc not surface corrosion, see below. References to THROUGH CORROSION and PERFORATION being the catch!

Body protection warranty
All current Volkswagen vehicles are fully protected during manufacture against through corrosion for 12 years from the date of first registration.

The only preconditions are:

  • The defect must be reported to a member of the Volkswagen Authorised Repairer network as soon as it is discovered and within the warranty period.
  • The perforation must not have been caused originally by damage, neglect, insufficient care or maintenance or by external corrosion (rusting).
  • A member of the Volkswagen Authorised Repairer network must be advised about any rusting as soon as it is found.
  • All body repairs will be carried out promptly in accordance with the manufacturer's specification and procedures, using only approved parts and materials, so the original level of anti-corrosion protection is maintained.
Indeed I am rather wary of general claims. Equally I am wary of even factory extended warranties as there are differing versions that apply. You need to certain that the version you look at is the one that is current at the time of vehicle purchase.
 
Max-Felix

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Chapeau to Loz for this - it's exactly what I'd do on a brand new Cali 100%. Maybe even two layers.

I think this thread proves that the underlying *first* issue VW need to sort is two fold (second issue being the seal) - preparation of the aluminium roof *before* paint (as anyone who has done anything like this knows prep of bare alu pre paint is very difficult and needs care due to the way it oxidises so easily once cleaned/prepped) and secondly a much better paint formula/process.

Yet again in the 21st century when numerous cars both high and low end utilise all alu or some alu panels and have zero issues in this regard it is pathetic how VW (who themselves use alu panels in some cars I'm sure) don't amend the production process once and for all after so many years.

Just imagine if Golf owners found their roof rotting after 6-12 months - VW would sort it out damn quick.

Issue seems to be I'm sure the fact the Cali production/conversion is separate to the main VW production and a 'sub contracted' arrangement.
 
ArunAlec

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Chapeau to Loz for this - it's exactly what I'd do on a brand new Cali 100%. Maybe even two layers!

I think this thread proves that the underlying *first* issue VW need to sort is two fold (second issue being the seal) - preparation of the aluminium roof *before* paint (as anyone who has done anything like this knows prep of bare alu pre paint is very difficult and needs care due to the way it oxidises so easily once cleaned/prepped) and secondly a much better paint formula/process.

Yet again in the 21st century when numerous cars both high and low end utilise all alu or some alu panels and have zero issues in this regard it is pathetic how VW (who themselves use alu panels in some cars I'm sure) don't amend the production process once and for all after so many years.

Just imagine if Golf owners found their roof rotting after 6-12 months - VW would sort it out damn quick.

Issue seems to be I'm sure the fact the Cali production/conversion is separate to the main VW production and a 'sub contracted' arrangement.
I had a quick trawl and there sounds to be rumblings coming from the Tesla community regarding ally panels and corrosion.
It is hard to believe that VW didn't see this coming! Surely they had someone in the design office who'd come across this form of corrosion... (anyone whose had a bike with an ally seat post and a steel frame!)
 
Legin

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Well, yesterday was warm and sunny, the tape had finally arrived from Viking and I had a free morning to have a go at fitting the tape. Naively I had thought I would have caught the problem in time but sadly not. Mine is a March 2016 by the way.

View attachment 34035
This was the front nearside corner, looks bad but after cleaning and using Tcut the extent of the rust contamination was more clear.

View attachment 34036

Also on the inside,

View attachment 34037

But you can also see bubbling along the front edge. Unfortunately that wasn't the only place corrosion had occurred with each edge having some bubbling.

View attachment 34038
This is the offside, small patch but destined for bigger things I suspect.
View attachment 34039
Dead centre of the back edge.

There doesn't seem to be any logical reason why the corrosion has occurred where it has. If it was caused by the steel wire in the seal why then has it not bubbled up dramatically where the paint has become completely impregnated with rust at the front corner?

Anyway I couldn't face having the van shoddily repaired with a fix that would be temporary at best so I fitted the tape in the hope it will slow down the problem and in the belief that I could remove it should I need to make a claim. I had bought 3 rolls and it took two plus 450mm from the third to do the sides and back edges without stretching the tape.

I hadn't intended to do the front edge as access is awkward but having found corrosion at the corner I took the gamble and removed the remaining rubber seal. This is when I discovered the paint was literally bubbling up with seemingly no corrosion underneath.

View attachment 34040

A neat series of bubbles!

Worst still I discovered that the top coat of paint will literally peel off quite easily and so now I suspect that it will be impossible to remove the tape without seriously damaging the paint. So in for a penny etc I applied tape to the front edge. Then used a judicious amount of silicon and profanity to get the seal back, I'd overlapped the front corners which made it very tight but the front edge was difficult to fit along its entire length for some reason. The rest went on comparatively easily, but you do need to use plenty of silicon.

So now I'm not sure if I've done the right thing. Only time will tell if the problem gets a lot worse and I've voided the warranty, but with a bit of luck this will hold the tide of corrosion back and I can enjoy the vehicle until I trade it in for an entirely plastic electric T12.

These bubbles are the osmosis process I referred to in another thread. Basically due to paint being semi permeable and continuously immersed in rain water.

The Loz tape install is a good one. However I would personally first sand /grind away any damage that is behind the seal (ie hidden) , and coat with Duralac isolator. Also I would fill the seal with some sealant like PU used on caravans and motorhomes or ACF50 for something easier and reversible. Duralac is well known by Lotus owners to isolate steel from aluminium but it is bright yellow and applied with a brush.
 
Max-Felix

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Presuming though the minor bubbles are not too big an issue *as long as* no steel is allowed to come into play.

Take that away and even if the alu is exposed then it should just oxidise over preventing further issues. It only 'corrodes' and starts to powder if galvanic corrosion can take place and for that you need the steel in the seal.

Isolate that steel and the worst that can happen is minor paint bubbling and peel but at least not actual destruction of the alu?

Is that correct?

Powder coating the roofs rather than wet paint might be an idea.
 

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