Quantcast
Have your say in our new Classics Forum: Join the discussion here... | No thanks

Unknown - Bubbling paint on a GRP bodied classic car

On 4th February 2015, HJ wrote:-

"The problem is Osmosis, common on boats. Moisture has got behind the gel coat. Expensive specialist job to repair and definitely not covered by insurance. "

In response to an enquiry about "Bubbling paint on a GRP bodied classic car" described thus:

"My 1974 GRP bodied classic car was perfect in summer time, and used regularly. When wet weather came in I used two car covers, one soft breathable, and one waterproof, to keep off worst of rain and bird droppings etc.

To my horror the paintwork has bubbled up badly, little humps about 3mm diameter, 1mm high."

IF this is osmosis (which implies that the enquirer is incorrect in referring to "paint") I'd say the enquirer needs to stop using those covers.

Boats are MUCH more exposed to this hazard, since the hulls are continually immersed. They hardly ever show significant osmotic blistering on the topsides, unless its somewhere rainwater is trapped.

If its osmosis it seems very likely the covers are trapping rainwater or condensation against the gelcoat.

Air movement (wind, with maybe some fans inside and/or under the car, if possible, will dry out the structure, and may cause the collapse of some of the blisters.

With boats, a severe case may have the gelcoat stripped, the laminate washed and dried out, and then re-painted with a high-build epoxy/mineral water-barrier coat. That'd be uneccessary on a car, and an acceptable cosmetic appearance would be much harder to achieve.

Asked on 10 February 2015 by edlithgow

Tags: paint and bodywork classic cars warranties insurance write offs

1 answer

peter moss    on 14 January 2017

Yes tell me i owned a Scimitar it had more pimples than a hookers bum !

Add a comment

Related questions
My son owns a Golf GTI Mk3 that was recently involved in a traffic accident. They exchanged insurance details and the process began resulting in my son’s...
My neighbour has been involved in a car crash (not responsible). Someone hit the side of her Fiat X1/9 sports car. It was in excellent condition, but she...
I have been looking for a classic Mercedes-Benz and have come across a beautiful Mercedes-Benz 450 SLC. Trouble is, an HPI check shows that it was written...
I have a 1996 Volvo 850R Estate with only 77k on the clock. It is immaculate inside, much cherished and cared for during the 18 years I have owned it....
 
Amount to borrow
Sorry. The minimum loan amount is £1000
To pay back over

My credit score

Best available rate 9.20%

Total repayment £9,304.93

Total cost of credit £1,804.93

£155.08

60 monthly payments

Apply now

Representative example

The Representative APR is 13.2% (fixed) so if you borrow £7,500 over 4 years at a rate of 13.2% p.a (fixed) you will repay £199.21 per month and repay £9562.20 in total.

;